Yours is the most interesting and informative channel on the subject of renewable energy and environmental issues I have come across so far. Keep up with your fine work. Kudos and thanks.
That’s because it sort of is. We’ve made some real things with graphite-like materials, but the real thing is VERY hard to mass produce and the quality of it is directly related to how pure (in this case flat and contiguous) you make it
@@markhaus yes we definitely have a lot of work to do to bring it too commercialization. I do think it will happen eventually, but we have to wait. Sometimes things take many decades to go from lab to commercial.
@JZ's Best Friend I think that one is considered a conspiracy theory. Cold fusion was discussed as a serious possibility decades ago but we now know it can't be done. At least not by our current understanding and technology. Graphene on the other hand, is real and has been produced. The trick is producing it at a commercial scale and of high quality. It will take some time, but it will happen. It took plastic like 40 years to change the world from it's discovery. People had long lost hope when it came out. But when it finally did it turned the world upside-down.
Now this is the first video on sustainability that shows that there's still hope and we should focus on science and technology as our means of adaptation to abrupt climate change.
Thank you for another great informative video. I am an organic chemist by training but even we chemists are not up to date on everything chemistry. A few comments, with your permission: 1) The hexagon of carbons is not a molecule per se. A molecule is comprised of atoms covalently bonded but it is a finate structure. Graphene is a giant structure that you can enlarge or reduce, depending on how many atoms you connect to the structure. So a better name would be "the basic component of a giant structure / crystal lattice" and then you should immediately show the graphene picture. 2) I am not sure how much all the S Px Py and all the other things you mentioned were helpful. For most people it would sound like Chinese and it does not add any value to the video. 3) The screeching noise of the blackboard: big no-no. 4) I would consider presenting your name at the start. 5) Add some text before each link that you put in the description. 6) The about section of your channel is empty. That's a shame IMHO. That's it. Great video and great channel. I hope you consider my comments as constructive.
Hi David. Many thanks for your feedback. Much appreciated and most definitely taken on board - I've learnt a few things reading your comments so I'm very grateful. I'll certainly consider all your suggestions for future videos. I'm not aware of the About section (I'm pretty rubbish on social media despite having a You Tube channel!), So I'll have a look for that and put something in there. All the best. Dave.
You showed a plastic model of Graphene with identical single bonds between each carbon atom. This is not the case. Each carbon atom must have 4 bonds in total. There are double bonds interwoven within the Graphene molecule and of course within the 2D Graphene sheet like structure. This ensures that there are 4 bonds around each carbon atom at any one time. One way of understanding this a little better is to look at the structure of Benzene which is also a 6 carbon ring type structure (C6H6). Kekule was the first to propose a hexagon ring type structure for Benzene type molecules where single and double bond interchange within the ring structure. This effectively produces a delocalised cloud of electrons around the ring. Its a small point but nevertheless very important
franklin russell as so often happens, for the sake of simplicity, the scientific details are neglected. You can get a correct explanation from a chemistry teacher or a chemical engineer.
I obviously have heard of Patreon. However, I've never logged on. We live in a world that, almost from the beginning, we've come to expect content of all sorts to be free. It's almost that, because revenue can come from more oblique sources, the average rider can ride for free.Maybe that's not as horrible as it seems, as maybe it's just a changing business model. It does, however, add an element of "honor system" to our lives. If you're receiving something of value, your sense of both fairness and priorities are tested often. You're bright, articulate, selfless, more than fair, and informative. You present to the world a valuable thing. I was compelled tonight to pony up.
Graphene is constantly being made on industrial scale. Single large sheets are difficult to make, but smaller flakes are really simple to do and have tons of applications. Infact, i have made multiple kg of it myself. That tape thing you did there, was not graphene, no where even close. Try sticking the tape to itself some 1000 times and you might get lucky and have there some pieces few layers thick.
Hi Skaltura. Thanks for your feedback. Sounds like you're an enthusiastic proponent of graphene. Just for clarity, I was of course perfectly well aware that I was not making graphene. It was a visual joke. I do those sometimes :-)
not according to Geim - he described exactly this process (with sellotape and a lump of graphite) in the first article I saw on Graphene (in NewScientist, many years ago). Press it on, tear it off - some of the flakes that are left stuck to the tape, the most transparent - hence the thinnest, he confirmed were only 1 atomic layer thick...
@@dickhamilton3517 he also described you need to do this hundreds of times ... If you read my article, i did not say this does not work, but as shown; Is not graphene. Reading comprehension. It's a thing. :)
if it's a single layer from a graphite block, then of course it's graphene - that's what graphene is by definition - a single layer of carbon in a hexagonal 2D lattice. It works because that's how Geim demonstrated it in the first place, and took electron micrographs to prove it.
I really like the water filtration aspect. As a father of a child who has NDI or in Layman terms, Water Diabetes, this is great news. I have always been worried about the water supply for him as he gets older. He has to drink at least two gallons a day.
Wow it's been a while since I first saw a video on graphine, and now I have see your video and the exciting developments made in the last few years I can't wait for it to change the world.
Thank you for a very interesting and well presented vlog on graphene and it possible uses. It seems to me that graphene will be for the 21st century what the discovery of laser was for the 20th century. Brilliant.
Graphene... the new Kale! I bet it works better for scrubbing my cast iron skillet than that week old kale I forgot in the fridge. I've been reading about graphene in my ScienceDaily feed for the past several years. Having worked for a few years in material science research, I am amazed at the amount of research in carbon fiber filtration, nanotubes, capacitors, and flexible non corrosive structural materials, etc. For those susceptible to despair, these are encouraging developments. However the pace needs to accelerate rapidly. There are many hands idled by the preoccupation with next weeks sales figures or the new season of GoT or the relocation of facilities to who knows where while at the same time life saving, planet saving work goes wanting for lack of financial support. Get angry, get active or get out of the way.
Fyi.. i test concrete for a living and there's a few companies here in the south that use various Graphene admixtures... It works quite well.. just a small amount somehow changes the structure of the concrete.. when we break a cylinder in more or less "explodes" instead of crumble.. interesting stuff 👍👍👍
Graphene and conductive plastics are interesting materials. Good to see there is some commercial progress. This is why we need more funding for fundamental research.
Modeling is a tool to simplify things in both science and engineering disciplines. İf you Simplify something you'll surely omit some details. The point is to make its inner workings more understandable or just be able to make it work without the sheer complexity. You do an exalant work on "modeling hard scientific concepts" so that avarage Joe can grasp it. Please keep in mind this while being attacked "for being inaccurate" in your explanations. Keep up the good work, İ love your videos and your way of explaining stuff. ( Despite being an scietifically inclined Engineer)
I have enjoyed all your produced videos that I have seen, but this one is REALLY intriguing! THANK-YOU for your sharing all these things with yours truly.
I really hope when this new graphene technology revolution happens companies focus on reaclaming carbon we've already used. Like those giant plastic islands in the ocean and the co2 in the air.
Thanks for the cool vid! I understood they're currently using carbon nanotubes as conrete reinforcements, for the same reasons you propose graphene. Issue with that is; in processing and demolition this behaves comparable to asbest in the human body, meaning it's highly carcinogenic, for the same reasons as asbest is (it decomposes in thin long needles, destroying cell walls, DNA, etc. any opinion on that?
I would add the for the most promising technology to fight climate change is the methodology associated with regenerative farming. If a system to compensate farmers was implemented to have farmers convert to regenerative practices. Once converted and the practices established on each farm the incentives can be with drawn and the farms operated and continue to sequester carbon and super method continues to increase the land productivity creating a positive feed back loop sequestering carbon. This has to be a superior option to any patented mechanical solution. The added benefit is that desert land can be invested to create productive land. As 33% of land is desert this is a huge opportunity to sequester carbon and create productive land as a by product.
love this channel. but i have a request? @Just Have a Think. this was dated 2019. can you give an update on these porducts? have any of them actually made the jump to practical applications? particularly the G-Concrete. and the batteries and capacitors?
Freeman Dyson discounts the impact on any potential climate change as negligible. One of the factors that leads him to this conclusion is the development of technology that makes the issue moot. Ah technology with that potential is presented here. Thanks.
Hi, 1) Graphene is not a 2D material. It is a three-dimensional material with a very small thickness. 2D materials don´t exist. Only in people´s minds. 2) What you have in your masking tape is not Graphene but a "thin layer" of Graphite. Graphene is almost transparent so you wouldn´t see it. 3) Graphene is not harder than diamond nor steel. To be able to say that you would need to test it and you can´t. 4) Many authors doubt about the self healing property of G 5) Nice video though
About 3), strange thing to say for a mechanical simulation channel. I'm not an expert but scientist has empirical evidence that carbon liaison in graphene are shorter than in diamond (meaning more energetic). And hexagonal structure yield superior strength than tetrahedral structure on the plan. Young module and hardness has been calculated based on empirical values obtained by nano-indentation, google it. I guess it's only inaccurate to say that graphene is harder/stronger than diamond or steel because the technique used give results for a perfect sheet of graphene and defect play a huge role in 'real' strength or hardness.
Hi! Sorry, my bad. Let me please explain. To be able to compare G and steel you need to test two samples the same size and you can't. You cannot make a steel sheet 1 atom thick. You cannot make graphene thick enough to compare to steel minimum thickness because that would be Graphite.
Dave, so what you are suggesting is that all I need is a spark plug, feed a rich mixture of acetylene into an old one cylinder engine, and just scoop out the graphene? Then mix that with Portland cement, add water, gravel and sand, and make concrete that is twice as strong? I'm liking that idea! How much of the soot from the engine do I mix with the Portland to get the best concrete? Is it that simple??
Yea like @zuluknob said, it's already on the market, and final end user products are on the market. It's still mostly on the fringes, but there are a lot of people looking hard at final end products, and there is A LOT of them, but it takes time to take things to scale and make specifications for all characteristics. I have myself made many Kg of the stuff, various composites, oil and grease additives etc. with graphene. Example: In motor oil usage we got 3.5% performance increase on dynamometer measured from the wheels of the vehicle.
My wife is on dialysis and I heard that graphene membranes in dialysers could significantly improve dialysis ... It will be great for the patients if this happens
Isn't filtering _everything_ out of water a bad thing? I recall that for water to be drinkable, it _has_ to have minerals and bacteria, otherwise you get distilled water (which is harmless but also quite useless to drink).
But that is the ssme problem with reverse osmosis - few minerals which you need to add or consume by other means..Destilled water is tolerable only in small quantities. If you drink too much (pure) water you desalinate which can at the end kill you...
@@tristanschreiber5279 Thank you for the clarification. That also reinforces my point that you shouldn't filter _everything_ out of the water. But I'm not sure what exactly the filter does.
I've read more about it and, yes, graphene-with-pores does filter out minerals like Calcium and Magnesium. But from what I understand, this has been the case always and we don't distinguish between salt and these useful minerals anyway? So yes, graphene is promising technology, then.
Having studied a fair bit of physics and chemistry, I've learned to pay special attention to measurements and units. I can't help but be annoyed when people use units like KG or MM. It's somewhat understandable when marketing people do that, because they literally have no idea how to use or spell units of any sort. Just using numbers in a sensible way is challenging enough for them as it is, so you can't expect them to get the units right. However, in this case you included Nm in the video (at 2:55), which is must have been a typo or something, because I've seen you use units properly in other videos. In case you're wondering, Nm stands for newton meters, which is an SI unit of torque. Using upper or lower case letters makes a big difference.
It has been about 15 years since graphene was discovered and we don't yet see it available in products. I'm reminded of the discovery of electricity and penicillin duration before the public had access. We will need those graphene dream products (water filters, electrical storage, super strong materials) very soon if they are to aid in the fight against climate change. On another note, where is the UK equivalent of USA Senator Sheldon Whitehouse (ua-cam.com/users/SenatorWhitehousevideos), with his "Time To Wake Up" presentations? This guy is a real American Hero in my mind. I can't think of a single British politician worthy of such an accolade.
You have another hero in the UK. Robert Murray-Smith. Not a politician but a nice and generous scientist. Check it out... ua-cam.com/channels/4AkVj-qnJxNtKuz3rkq16A.html
@@smasimulationshop1028 Thank you. He's got 7 years of videos for me to catch up on. As you say, a nice guy and it looks like he explains things clearly.
Strongs to you and your wife. My guess is that graphene will make a difference to dialysis, but only (primarily at least) in the aspect of cost. We may see home practical dialysis machines. I hope for you that does happen.
Excellent video. But… Graphene is both flexible and hard? Hard is just the opposite of flexible, it doesn't make much sense… It is true the best solar panels available to the public are around 20-25% efficiency, but the best of the best unavailable due to its prohibitive costs and production unscallability are at more than 40%. They are used for very specific applications, like satellites. It is still a sizable jump if graphene allows to get solar panels to 60% efficiency, especially if they can be made cheap.
Thank you, ...great review on graphene technology and development. HOWEVER, 'we' don't need a centralized European Union bureaucracy to further its development and to share this new technology with the 'people-of-planet-earth'.
I think that when you peel the adhesive tape away from the graphite you will not get a layer of graphene but a layer of graphite. If your right however, congratulations, you've just solved the problem of producing graphene sheets on an industrial scale!
You should collect the diff. things you use on the shelf behind you...and later on you can always refer to an earlier program by pointing or use it again... just a little thought 😁
Wow. You could have been reading my mind! In fact I'm hoping at some point this year to start doing a second video each week (or possibly once a month) that just reports the latest news from the renewables world. I was planning to make a second little space in my cabin with a different background so as to differentiate the two types of program - and my plan was precisely to put shelves in the background with all the props I use in the videos. Great minds think alike!! :-)
Robert Murray Smith has some excellent videos on how to produce graphene, supercapacitors and batteries. I love his UA-cam channel FMG and his way of explaining science.
The structure of graphene is not discrete (single, individual) molecules each one with only 6 carbon atoms, that's the benzene molecules... It is more like the chickenwire, where the knots are the carbon atoms. And that flat structure can contain as many atoms as we are able to grow the single layer of graphene/chickenwire.
Hi Dave. Yeah, this one seems to have been well received. Sorry there was no video this week - I've been clattered by this horrible winter cold going around. I'm more or less back up to pace now so normal service should be resumed this Sunday with a look at this new Lab-Grown meat technology that's on it's way to market soon. Have a good week. Dave
@@JustHaveaThink Sorry to hear about the cold. We've got a week's holiday so was looking forward to watching your next video, with time to reflect and research your topic. You probably saw this article from the BBC today www.bbc.com/news/science-environment-47283162 "Cultured lab meat may make climate change worse". Look forward to hearing your take on it all next week. A shot of whiskey might help the cold, but alas :-)
What you skip is that the delocalized aromatic bonds (in addition to the covalent bond you showed) which is like found in single ringed benzene, but is spread across all of the interconnected rings of an entire graphenic molecular sheet. Hopefully graphene will make solar power and battery tech economically and environmentally feasible, as our current technologies require massive amounts of toxic waste generation for cells or batteries that only last 10 to 20 years.
Hi Carlos. Good point. My apologies. I have posted the links now in the description box, but here they are below for you singularityhub.com/2018/01/26/how-graphene-research-is-taking-aim-at-5-of-the-worlds-biggest-problems/#sm.00003d76gn1a3qd0qy0deoyrij2xw www.skepticalscience.com/Graphene-SkS.html www.newcivilengineer.com/tech-excellence/graphene-super-concrete-could-cut-carbon-emissions/10030402.article www.mnn.com/green-tech/research-innovations/stories/10-ways-graphene-could-change-the-world graphene-flagship.eu/project/Pages/About-Graphene-Flagship.aspx www.graphene-info.com/saint-jean-carbon-developing-graphene-gel-salt-water-batteries news.mit.edu/2018/manufacturing-graphene-rolls-ultrathin-membranes-0418 news.mit.edu/2017/mit-researchers-develop-graphene-based-transparent-flexible-solar-cells-0728 singularityhub.com/2018/01/26/how-graphene-research-is-taking-aim-at-5-of-the-worlds-biggest-problems/#sm.00003d76gn1a3qd0qy0deoyrij2xw www.csiro.au/en/News/News-releases/2018/Tiny-membrane-makes-Sydney-Harbour-drinkable www.treehugger.com/solar-technology/graphene-could-offer-60-percent-solar-cell-efficiency.html
You have got a contaminated layer of graphite, with the ‘ print’ of adhesive on it. So is that the CoValent material? The valence has to be compatible to make an electron bond. With no contaminant effect.
They are on their way. It's just that the supply chains are used to working with one type of technology, and suddenly comes this whole new technology which needs to be further tested, scaled up and proven before it can gain mass-adoption. Don't you worry, I'm confident we'll start to see consumer applications within the next ten years.
@@theamici Maybe it will happen- bit only if society and politics put pressure and /or incentives towards that direction. It is seldom or very slow that a new technology will replace an established technology as initial cost for development and machines are high and production cost will only come down with rising production scale. It is only by laws (market rules) or incentives/subsidies that can speed up developments or force them in a certain direction.
Another good vid David. Clear and comprehensible... dunno where you find the time do the research AND make the films so frequently. On a related concrete replacement note have you heard about Majd Mashharawi and her 'green cake' being used for building in Palestine? www.bbc.com/news/av/stories-46074563/what-is-green-cake-and-why-did-this-woman-invent-it
After removing the tape from the graphite you probably still have a couple of layers. Only after splitting the layer a couple of times by sticking another piece of tape to it, will it truly be one layer. Modern, more scale-able technologies use vapor deposition for neat big layers, whereas the spark plug method creates a mix of graphene platelets and nano-tubes. O wait. He got there just now ^^
The biggest one of all. If grapheme use becomes HUGE as I predict it will, then we’re eventually going to go after the carbon in the atmosphere to make it.
Good vid, but at 4:19 you shouldn't write "Super conductive" when you mean "Highly conductive" because people will think you mean "Superconductive" as in high-T superconductivity.
Thanks JB. There've been a few corrections of my inaccuracies in this one. I think you're the first to pick up on this one though. I appreciate you highlighting these things as it spurs me on to try harder in subsequent videos, especially when I'm trying to tackle scientific or technical stuff as a layman. Thanks for your support. All the best. Dave
Sorry to be pedantic, but that plastic kit molecule you showed was "benzene" - which is the reoest unit within graphene, but by itself, it is NOT a graphene molecule.
Try with fullerene C60 molecule , which has circular ball shaped atomic model for solar PV cells, sphere has larger surface area and also a black body, which might improve efficiency from traditional 15 percnt
i wanted to order graphene batteries for motorcycles. however the size available was only for hobbyist or those model size helicopters. that was two years ago. still not available batteries for cars of motorcycles. Whenever they will be finally available. watch out for huge changes. So far looking at the carbon batteries sound promising.
I’ve been thinking since coming across Graphene about 4 yrs ago that if we have too much carbon in the atmosphere; CO2, if we could capture the C, we would be left with a surplus of O to create ozone. IE, an artificial tree!
Putting aside our differences, have you considered what will happen if climate activists (XR) are right or wrong? Assuming XR are right, they still have to convince the big nations such as USA, China, Russia etc to adopt IPCC recommendations which isn’t going to be anytime soon and certainly not within the time frames set. Considering the the majority of Kyoto signatories did not meet their obligations, the same is expected for the Paris Accord members. So we are all doomed whichever side of the fence we stand on. Considering the “wrong” scenario, certain people and nations that would have heavily invested money to lower their carbon emissions will have been severely disadvantaged compared with those that made few or no changes. Humanity will have to acknowledge its vulnerability to the might of the universal forces. In summary whatever the scenario, XR efforts are futile and even dangerous. If they are right we all die. If they are wrong our longevity depends on forces beyond our control and we need to get off earth before fate makes a radical turn which means we need to become an interplanetary species, to take advantage of every opportunity to colonise other heavenly bodies. So “vive l'industrie pétrolière”. “Vive de dioxyde de carbone”. “Vive SpaceX”
Actually those that invested to lower carbon emissions have done rather well, agree XR are extreme, but cleaner more intelligent energy with larger grids crossing more time zones is actually a great advancement, for whatever reason it was done.
Okay, so if that's how one creates a "pristine" layer of graphene, then if one does that over say 10 feet of tape and measures the resistance across it, does it measure 0-ohms resistance (i.e. a short)? I bet it doesn't, but I never have tried it.
Yours is the most interesting and informative channel on the subject of renewable energy and environmental issues I have come across so far. Keep up with your fine work. Kudos and thanks.
For some reason I never get tired of videos about graphene😁. It's just too good to be true!
Yes, it is, isn't it?
That’s because it sort of is. We’ve made some real things with graphite-like materials, but the real thing is VERY hard to mass produce and the quality of it is directly related to how pure (in this case flat and contiguous) you make it
Probably spiders make it
@@markhaus yes we definitely have a lot of work to do to bring it too commercialization. I do think it will happen eventually, but we have to wait. Sometimes things take many decades to go from lab to commercial.
@JZ's Best Friend I think that one is considered a conspiracy theory. Cold fusion was discussed as a serious possibility decades ago but we now know it can't be done. At least not by our current understanding and technology. Graphene on the other hand, is real and has been produced. The trick is producing it at a commercial scale and of high quality. It will take some time, but it will happen. It took plastic like 40 years to change the world from it's discovery. People had long lost hope when it came out. But when it finally did it turned the world upside-down.
Now this is the first video on sustainability that shows that there's still hope and we should focus on science and technology as our means of adaptation to abrupt climate change.
This is an excellent channel. Love the range of explanations and the simple and elegant descriptions and illustrations.
Thank you for another great informative video. I am an organic chemist by training but even we chemists are not up to date on everything chemistry.
A few comments, with your permission:
1) The hexagon of carbons is not a molecule per se. A molecule is comprised of atoms covalently bonded but it is a finate structure. Graphene is a giant structure that you can enlarge or reduce, depending on how many atoms you connect to the structure. So a better name would be "the basic component of a giant structure / crystal lattice" and then you should immediately show the graphene picture.
2) I am not sure how much all the S Px Py and all the other things you mentioned were helpful. For most people it would sound like Chinese and it does not add any value to the video.
3) The screeching noise of the blackboard: big no-no.
4) I would consider presenting your name at the start.
5) Add some text before each link that you put in the description.
6) The about section of your channel is empty. That's a shame IMHO.
That's it. Great video and great channel. I hope you consider my comments as constructive.
Hi David. Many thanks for your feedback. Much appreciated and most definitely taken on board - I've learnt a few things reading your comments so I'm very grateful. I'll certainly consider all your suggestions for future videos. I'm not aware of the About section (I'm pretty rubbish on social media despite having a You Tube channel!), So I'll have a look for that and put something in there. All the best. Dave.
You showed a plastic model of Graphene with identical single bonds between each carbon atom.
This is not the case. Each carbon atom must have 4 bonds in total. There are double bonds interwoven within the Graphene molecule and of course within the 2D Graphene sheet like structure. This ensures that there are 4 bonds around each carbon atom at any one time.
One way of understanding this a little better is to look at the structure of Benzene which is also a 6 carbon ring type structure (C6H6). Kekule was the first to propose a hexagon ring type structure for Benzene type molecules where single and double bond interchange within the ring structure. This effectively produces a delocalised cloud of electrons around the ring.
Its a small point but nevertheless very important
Very large point actually.
In the models of a sheet of graphene, I see three covalent bonds per atom of carbon, not four??
franklin russell as so often happens, for the sake of simplicity, the scientific details are neglected. You can get a correct explanation from a chemistry teacher or a chemical engineer.
And what exactly is there to keep it as a flat sheet, nothing else is a flat sheet
@@franklinrussell4750 2 out of 6 bonds are double ones.
I obviously have heard of Patreon. However, I've never logged on. We live in a world that, almost from the beginning, we've come to expect content of all sorts to be free. It's almost that, because revenue can come from more oblique sources, the average rider can ride for free.Maybe that's not as horrible as it seems, as maybe it's just a changing business model. It does, however, add an element of "honor system" to our lives. If you're receiving something of value, your sense of both fairness and priorities are tested often. You're bright, articulate, selfless, more than fair, and informative. You present to the world a valuable thing. I was compelled tonight to pony up.
sir this channel is the best channel i ever seen
Your descriptive inorganic chemistry is beautifully presented. Look forward to more on graphene.
Graphene is constantly being made on industrial scale. Single large sheets are difficult to make, but smaller flakes are really simple to do and have tons of applications. Infact, i have made multiple kg of it myself.
That tape thing you did there, was not graphene, no where even close. Try sticking the tape to itself some 1000 times and you might get lucky and have there some pieces few layers thick.
Hi Skaltura. Thanks for your feedback. Sounds like you're an enthusiastic proponent of graphene. Just for clarity, I was of course perfectly well aware that I was not making graphene. It was a visual joke. I do those sometimes :-)
@@JustHaveaThink That was still an factual error, and you should have explained that you need to do that a thousand times or so :)
not according to Geim - he described exactly this process (with sellotape and a lump of graphite) in the first article I saw on Graphene (in NewScientist, many years ago). Press it on, tear it off - some of the flakes that are left stuck to the tape, the most transparent - hence the thinnest, he confirmed were only 1 atomic layer thick...
@@dickhamilton3517 he also described you need to do this hundreds of times ...
If you read my article, i did not say this does not work, but as shown; Is not graphene. Reading comprehension. It's a thing. :)
if it's a single layer from a graphite block, then of course it's graphene - that's what graphene is by definition - a single layer of carbon in a hexagonal 2D lattice.
It works because that's how Geim demonstrated it in the first place, and took electron micrographs to prove it.
Nice wrap up about graphene. You gave me plenty of information to use in my speech class, thank you.
I really like the water filtration aspect. As a father of a child who has NDI or in Layman terms, Water Diabetes, this is great news. I have always been worried about the water supply for him as he gets older. He has to drink at least two gallons a day.
Wow it's been a while since I first saw a video on graphine, and now I have see your video and the exciting developments made in the last few years I can't wait for it to change the world.
Thank you for a very interesting and well presented vlog on graphene and it possible uses. It seems to me that graphene will be for the 21st century what the discovery of laser was for the 20th century. Brilliant.
Maybe the 22nd century, if we ever get there.
Great video. I look forward to the day we can 3D print this stuff.
Exciting times. I shall read up on this. Cheers and have a good week.
@Zombie Vampires Yes, thanks. I've watched a number of his videos, he's always up to date.
Graphene... the new Kale! I bet it works better for scrubbing my cast iron skillet than that week old kale I forgot in the fridge. I've been reading about graphene in my ScienceDaily feed for the past several years. Having worked for a few years in material science research, I am amazed at the amount of research in carbon fiber filtration, nanotubes, capacitors, and flexible non corrosive structural materials, etc. For those susceptible to despair, these are encouraging developments.
However the pace needs to accelerate rapidly. There are many hands idled by the preoccupation with next weeks sales figures or the new season of GoT or the relocation of facilities to who knows where while at the same time life saving, planet saving work goes wanting for lack of financial support. Get angry, get active or get out of the way.
I've been using coarse salt and damp paper towel pre cleans my carbon steel pan great!
@@greggbarber I guess I'll have to eat my greens afterall ;)
@@greggbarber we use glass, oh and microwaves
I liked the video in the first 30 seconds. When you said: "Graphene".
20 years ago they said we'll have fusion reactors and a bunch of graphene stuff. Oh boy, this summer is going to be great !
Great to revisit this video Dave! Well done overview and so much more discovered since... it's incredible!
Fyi.. i test concrete for a living and there's a few companies here in the south that use various Graphene admixtures...
It works quite well.. just a small amount somehow changes the structure of the concrete.. when we break a cylinder in more or less "explodes" instead of crumble.. interesting stuff 👍👍👍
Graphene and conductive plastics are interesting materials. Good to see there is some commercial progress. This is why we need more funding for fundamental research.
Looks promising....pity we didn't have it 50 years ago.
Well presented doco, very informative and kept simple.
Modeling is a tool to simplify things in both science and engineering disciplines. İf you Simplify something you'll surely omit some details. The point is to make its inner workings more understandable or just be able to make it work without the sheer complexity. You do an exalant work on "modeling hard scientific concepts" so that avarage Joe can grasp it. Please keep in mind this while being attacked "for being inaccurate" in your explanations.
Keep up the good work, İ love your videos and your way of explaining stuff. ( Despite being an scietifically inclined Engineer)
I have enjoyed all your produced videos that I have seen, but this one is REALLY intriguing! THANK-YOU for your sharing all these things with yours truly.
Extremely interesting ,I thank you for this fascinating video please keep them coming Sir.
I really hope when this new graphene technology revolution happens companies focus on reaclaming carbon we've already used. Like those giant plastic islands in the ocean and the co2 in the air.
Another great video, keep it up, its building momentum!! Thank you!
i didn't expect the Graphene batteries to be out by 2020. I really hope they do. Thx for the video.
they weren't.
Thanks for the cool vid! I understood they're currently using carbon nanotubes as conrete reinforcements, for the same reasons you propose graphene. Issue with that is; in processing and demolition this behaves comparable to asbest in the human body, meaning it's highly carcinogenic, for the same reasons as asbest is (it decomposes in thin long needles, destroying cell walls, DNA, etc. any opinion on that?
I would add the for the most promising technology to fight climate change is the methodology associated with regenerative farming. If a system to compensate farmers was implemented to have farmers convert to regenerative practices. Once converted and the practices established on each farm the incentives can be with drawn and the farms operated and continue to sequester carbon and super method continues to increase the land productivity creating a positive feed back loop sequestering carbon. This has to be a superior option to any patented mechanical solution. The added benefit is that desert land can be invested to create productive land. As 33% of land is desert this is a huge opportunity to sequester carbon and create productive land as a by product.
love this channel. but i have a request? @Just Have a Think. this was dated 2019. can you give an update on these porducts? have any of them actually made the jump to practical applications?
particularly the G-Concrete. and the batteries and capacitors?
Graphite layer on paper, with a very fine wire just touching the surface sufficed as the 'Diode' in the first crystal radios
Excellent video, well presented.
What amazing bunch of new capacities Graphene has, I hope in my life time it is going to reach mass productions.
Could you do an update on this video? I haven't heard much about graphine in a while.
Pie-bon-bons sound yummy. This graphene stuff sounds very handy. I just wonder how it reacts to megacanes and tornadoes.
Now I understand covalent bonding. It is the same relation with key changes using cords that are common to different keys.
Freeman Dyson discounts the impact on any potential climate change as negligible. One of the factors that leads him to this conclusion is the development of technology that makes the issue moot. Ah technology with that potential is presented here. Thanks.
Is there any chance you could do a followup to this video? Thanks!
Hi,
1) Graphene is not a 2D material. It is a three-dimensional material with a very small thickness. 2D materials don´t exist. Only in people´s minds.
2) What you have in your masking tape is not Graphene but a "thin layer" of Graphite. Graphene is almost transparent so you wouldn´t see it.
3) Graphene is not harder than diamond nor steel. To be able to say that you would need to test it and you can´t.
4) Many authors doubt about the self healing property of G
5) Nice video though
About 3), strange thing to say for a mechanical simulation channel.
I'm not an expert but scientist has empirical evidence that carbon liaison in graphene are shorter than in diamond (meaning more energetic). And hexagonal structure yield superior strength than tetrahedral structure on the plan.
Young module and hardness has been calculated based on empirical values obtained by nano-indentation, google it.
I guess it's only inaccurate to say that graphene is harder/stronger than diamond or steel because the technique used give results for a perfect sheet of graphene and defect play a huge role in 'real' strength or hardness.
Hi! Sorry, my bad. Let me please explain.
To be able to compare G and steel you need to test two samples the same size and you can't. You cannot make a steel sheet 1 atom thick. You cannot make graphene thick enough to compare to steel minimum thickness because that would be Graphite.
I can see multiple uses for OMTEC David..
Dave, so what you are suggesting is that all I need is a spark plug, feed a rich mixture of acetylene into an old one cylinder engine, and just scoop out the graphene? Then mix that with Portland cement, add water, gravel and sand, and make concrete that is twice as strong? I'm liking that idea! How much of the soot from the engine do I mix with the Portland to get the best concrete? Is it that simple??
Hope graphene won't be like fusion, ie, "always 50 years away".
Graphene has been a thing for over 10 years. Applications for graphene and the broad range of 2D materials are still in the future.
@@CarFreeSegnitz I know it's a thing, I just want it to be MORE of a thing ;-)
Yea like @zuluknob said, it's already on the market, and final end user products are on the market.
It's still mostly on the fringes, but there are a lot of people looking hard at final end products, and there is A LOT of them, but it takes time to take things to scale and make specifications for all characteristics.
I have myself made many Kg of the stuff, various composites, oil and grease additives etc. with graphene.
Example: In motor oil usage we got 3.5% performance increase on dynamometer measured from the wheels of the vehicle.
I've seen it in golf balls . . ad
My wife is on dialysis and I heard that graphene membranes in dialysers could significantly improve dialysis ... It will be great for the patients if this happens
Your videos are top notch,and very inspiring, so thanks bloke !!!!!!!!
11:10 Holey graphene, Batman! If we put this new battery in the Roadster, the G-forces will mash the s--t out of both of us!
Isn't filtering _everything_ out of water a bad thing? I recall that for water to be drinkable, it _has_ to have minerals and bacteria, otherwise you get distilled water (which is harmless but also quite useless to drink).
But that is the ssme problem with reverse osmosis - few minerals which you need to add or consume by other means..Destilled water is tolerable only in small quantities. If you drink too much (pure) water you desalinate which can at the end kill you...
@@tristanschreiber5279 Thank you for the clarification. That also reinforces my point that you shouldn't filter _everything_ out of the water. But I'm not sure what exactly the filter does.
I've read more about it and, yes, graphene-with-pores does filter out minerals like Calcium and Magnesium. But from what I understand, this has been the case always and we don't distinguish between salt and these useful minerals anyway? So yes, graphene is promising technology, then.
Is there going to be a graphene update video please?
he doesn't do updates, that would show that none of these announcements come to anything.
Having studied a fair bit of physics and chemistry, I've learned to pay special attention to measurements and units. I can't help but be annoyed when people use units like KG or MM. It's somewhat understandable when marketing people do that, because they literally have no idea how to use or spell units of any sort. Just using numbers in a sensible way is challenging enough for them as it is, so you can't expect them to get the units right. However, in this case you included Nm in the video (at 2:55), which is must have been a typo or something, because I've seen you use units properly in other videos.
In case you're wondering, Nm stands for newton meters, which is an SI unit of torque. Using upper or lower case letters makes a big difference.
It has been about 15 years since graphene was discovered and we don't yet see it available in products. I'm reminded of the discovery of electricity and penicillin duration before the public had access. We will need those graphene dream products (water filters, electrical storage, super strong materials) very soon if they are to aid in the fight against climate change. On another note, where is the UK equivalent of USA
Senator Sheldon Whitehouse (ua-cam.com/users/SenatorWhitehousevideos), with his "Time To Wake Up" presentations? This guy is a real American Hero in my mind. I can't think of a single British politician worthy of such an accolade.
You have another hero in the UK. Robert Murray-Smith. Not a politician but a nice and generous scientist. Check it out... ua-cam.com/channels/4AkVj-qnJxNtKuz3rkq16A.html
@@smasimulationshop1028 Thank you. He's got 7 years of videos for me to catch up on. As you say, a nice guy and it looks like he explains things clearly.
bud found you not to long ago i love you thank you
Thanks for an update on graphene ;)
My wife is on dialysis and I heard that graphene membranes used in dialysis machines could significantly improve the quality of dialysis.
Strongs to you and your wife. My guess is that graphene will make a difference to dialysis, but only (primarily at least) in the aspect of cost. We may see home practical dialysis machines. I hope for you that does happen.
Brilliant as usual
Great show, sounds like my Cybertruck will be made of Graphene not Stainless steel ❤️❤️❤️
Excellent video. But…
Graphene is both flexible and hard? Hard is just the opposite of flexible, it doesn't make much sense…
It is true the best solar panels available to the public are around 20-25% efficiency, but the best of the best unavailable due to its prohibitive costs and production unscallability are at more than 40%. They are used for very specific applications, like satellites. It is still a sizable jump if graphene allows to get solar panels to 60% efficiency, especially if they can be made cheap.
Thank you, ...great review on graphene technology and development. HOWEVER, 'we' don't need a centralized European Union bureaucracy to further its development and to share this new technology with the 'people-of-planet-earth'.
I think that when you peel the adhesive tape away from the graphite you will not get a layer of graphene but a layer of graphite. If your right however, congratulations, you've just solved the problem of producing graphene sheets on an industrial scale!
Brilliant presentation
I personally find the potential for increased efficiency of electric transmission mines to be most exciting.
Fantastic video. Thanks!
You should collect the diff. things you use on the shelf behind you...and later on you can always refer to an earlier program by pointing or use it again... just a little thought 😁
Wow. You could have been reading my mind! In fact I'm hoping at some point this year to start doing a second video each week (or possibly once a month) that just reports the latest news from the renewables world. I was planning to make a second little space in my cabin with a different background so as to differentiate the two types of program - and my plan was precisely to put shelves in the background with all the props I use in the videos. Great minds think alike!! :-)
A graphene molecule is a pretty open concept.
Robert Murray Smith has some excellent videos on how to produce graphene, supercapacitors and batteries. I love his UA-cam channel FMG and his way of explaining science.
The structure of graphene is not discrete (single, individual) molecules each one with only 6 carbon atoms, that's the benzene molecules... It is more like the chickenwire, where the knots are the carbon atoms. And that flat structure can contain as many atoms as we are able to grow the single layer of graphene/chickenwire.
Yes that's much better put, silly to hold up six atoms bonded like that, our chemistry teacher was the same
Hi Dave, a record view count. Looking forward to the next video.
Hi Dave. Yeah, this one seems to have been well received. Sorry there was no video this week - I've been clattered by this horrible winter cold going around. I'm more or less back up to pace now so normal service should be resumed this Sunday with a look at this new Lab-Grown meat technology that's on it's way to market soon. Have a good week. Dave
@@JustHaveaThink Sorry to hear about the cold. We've got a week's holiday so was looking forward to watching your next video, with time to reflect and research your topic. You probably saw this article from the BBC today www.bbc.com/news/science-environment-47283162 "Cultured lab meat may make climate change worse". Look forward to hearing your take on it all next week. A shot of whiskey might help the cold, but alas :-)
How disposable is the super-concrete?
beautiful channel you are incredible my friend. Jesus. love your references.
What you skip is that the delocalized aromatic bonds (in addition to the covalent bond you showed) which is like found in single ringed benzene, but is spread across all of the interconnected rings of an entire graphenic molecular sheet. Hopefully graphene will make solar power and battery tech economically and environmentally feasible, as our current technologies require massive amounts of toxic waste generation for cells or batteries that only last 10 to 20 years.
Please post the links, great video. thank you
Hi Carlos. Good point. My apologies. I have posted the links now in the description box, but here they are below for you
singularityhub.com/2018/01/26/how-graphene-research-is-taking-aim-at-5-of-the-worlds-biggest-problems/#sm.00003d76gn1a3qd0qy0deoyrij2xw
www.skepticalscience.com/Graphene-SkS.html
www.newcivilengineer.com/tech-excellence/graphene-super-concrete-could-cut-carbon-emissions/10030402.article
www.mnn.com/green-tech/research-innovations/stories/10-ways-graphene-could-change-the-world
graphene-flagship.eu/project/Pages/About-Graphene-Flagship.aspx
www.graphene-info.com/saint-jean-carbon-developing-graphene-gel-salt-water-batteries
news.mit.edu/2018/manufacturing-graphene-rolls-ultrathin-membranes-0418
news.mit.edu/2017/mit-researchers-develop-graphene-based-transparent-flexible-solar-cells-0728
singularityhub.com/2018/01/26/how-graphene-research-is-taking-aim-at-5-of-the-worlds-biggest-problems/#sm.00003d76gn1a3qd0qy0deoyrij2xw
www.csiro.au/en/News/News-releases/2018/Tiny-membrane-makes-Sydney-Harbour-drinkable
www.treehugger.com/solar-technology/graphene-could-offer-60-percent-solar-cell-efficiency.html
You have got a contaminated layer of graphite, with the ‘ print’ of adhesive on it. So is that the CoValent material?
The valence has to be compatible to make an electron bond. With no contaminant effect.
2 years on from this post and I can't find any of these possible markets that have made it
They are on their way. It's just that the supply chains are used to working with one type of technology, and suddenly comes this whole new technology which needs to be further tested, scaled up and proven before it can gain mass-adoption. Don't you worry, I'm confident we'll start to see consumer applications within the next ten years.
of course not, its just pie in the sky nonsense that never happens. it does generate Patreon and UA-cam ad revenue though.
@@theamici Maybe it will happen- bit only if society and politics put pressure and /or incentives towards that direction. It is seldom or very slow that a new technology will replace an established technology as initial cost for development and machines are high and production cost will only come down with rising production scale. It is only by laws (market rules) or incentives/subsidies that can speed up developments or force them in a certain direction.
Another good vid David. Clear and comprehensible... dunno where you find the time do the research AND make the films so frequently. On a related concrete replacement note have you heard about Majd Mashharawi and her 'green cake' being used for building in Palestine? www.bbc.com/news/av/stories-46074563/what-is-green-cake-and-why-did-this-woman-invent-it
After removing the tape from the graphite you probably still have a couple of layers. Only after splitting the layer a couple of times by sticking another piece of tape to it, will it truly be one layer. Modern, more scale-able technologies use vapor deposition for neat big layers, whereas the spark plug method creates a mix of graphene platelets and nano-tubes. O wait. He got there just now ^^
Very interesting stuff. If only we had a future?
Never trust a URL with a hyphen in the title. I can promise you that they won't be releasing game changing batteries in 2020.
Any updates on graphene manufacturing?
same update as 2 years ago, absolutely nothing is happening.
Excellent video again!
Great video as always!! 👍
The biggest one of all. If grapheme use becomes HUGE as I predict it will, then we’re eventually going to go after the carbon in the atmosphere to make it.
Good vid, but at 4:19 you shouldn't write "Super conductive" when you mean "Highly conductive" because people will think you mean "Superconductive" as in high-T superconductivity.
Thanks JB. There've been a few corrections of my inaccuracies in this one. I think you're the first to pick up on this one though. I appreciate you highlighting these things as it spurs me on to try harder in subsequent videos, especially when I'm trying to tackle scientific or technical stuff as a layman. Thanks for your support. All the best. Dave
Sorry to be pedantic, but that plastic kit molecule you showed was "benzene" - which is the reoest unit within graphene, but by itself, it is NOT a graphene molecule.
Try with fullerene C60 molecule , which has circular ball shaped atomic model for solar PV cells, sphere has larger surface area and also a black body, which might improve efficiency from traditional 15 percnt
What about hempcrete and hemp bask for rechargeable batteries instead of expensive graphene ? Thanks for the great info
i wanted to order graphene batteries for motorcycles. however the size available was only for hobbyist or those model size helicopters. that was two years ago. still not available batteries for cars of motorcycles. Whenever they will be finally available. watch out for huge changes. So far looking at the carbon batteries sound promising.
This stuff sounds amazing. What happens if it gets into the ocean. Will it affect the wildlife
I’ve been thinking since coming across Graphene about 4 yrs ago that if we have too much carbon in the atmosphere; CO2, if we could capture the C, we would be left with a surplus of O to create ozone. IE, an artificial tree!
regardless of any new 'solutions', 2.0C >c1750 is already baked in and we are building more airports/ ramping up new wars etc
Roll on the cull. Too many Homo Stupidus.
Great video 👍🏻
Problem solved in Bonding of Ethene . From Hydrogen, Bonding done in what and where , sterile process ?
I just found your channel, and I'm loving your content, but some of your sound effects are a little too harsh.
Putting aside our differences, have you considered what will happen if climate activists (XR) are right or wrong?
Assuming XR are right, they still have to convince the big nations such as USA, China, Russia etc to adopt IPCC recommendations which isn’t going to be anytime soon and certainly not within the time frames set. Considering the the majority of Kyoto signatories did not meet their obligations, the same is expected for the Paris Accord members. So we are all doomed whichever side of the fence we stand on.
Considering the “wrong” scenario, certain people and nations that would have heavily invested money to lower their carbon emissions will have been severely disadvantaged compared with those that made few or no changes. Humanity will have to acknowledge its vulnerability to the might of the universal forces.
In summary whatever the scenario, XR efforts are futile and even dangerous. If they are right we all die. If they are wrong our longevity depends on forces beyond our control and we need to get off earth before fate makes a radical turn which means we need to become an interplanetary species, to take advantage of every opportunity to colonise other heavenly bodies. So “vive l'industrie pétrolière”. “Vive de dioxyde de carbone”. “Vive SpaceX”
Actually those that invested to lower carbon emissions have done rather well, agree XR are extreme, but cleaner more intelligent energy with larger grids crossing more time zones is actually a great advancement, for whatever reason it was done.
Okay, so if that's how one creates a "pristine" layer of graphene, then if one does that over say 10 feet of tape and measures the resistance across it, does it measure 0-ohms resistance (i.e. a short)? I bet it doesn't, but I never have tried it.
It's not a pristine layer, it's a jumble of tiny flakes.
enjoying the videos, really interesting
I want to buy a self powered graphene car now! Graphene cells coating a plane? It sounds like a very interesting substance
4:41 Am I the only one who noticed that huge mistake?
To be clear: 1 millimeter (mm) = 1000 micrometers (µm)
Let's keep measuring everything in terms of the thickness of human hair so we know what we're talking about, actually a good book called Exactly.
The title is misleading. I hoped to learn some climate effects of graphene as the title tells me so 😒
Use extra electricity to run a compressor to power a freezer. Make ice for air conditioning.
heard of ferrock? really great stuff too.....