@@janiso12345 Well yes and there's also a dislike button and the option to block a channel and no matter how often you use this on certain "genres", UA-cam still thinks it has to show you this crap. The algorythmn definitively works better outside shorts.
Fun fact: these colloidal gold particles are used in pregnancy tests, COVID tests, drug tests, etc.! That's why the line looks purplish-reddish! The particles are attached to antibodies that detect these substances :)
Remember the technologist that got fired because he was reading the imprint line the machine that deposits antibody onto the test imprints a line with no color. Visible but colorless. I was glad that he got fired because I overheard him answering the phone using my name almost every time.
Excellent video! We are performing this daily in our lab, I'm always captivated by the magical appeal that astonishes students and even children. By maintaining laser parameters, a simple switch of liquids in which the laser ablation is performed can alter the color of the produced liquid. For instance, using tap water from different locations introduces variations in salts, minerals, etc., impacting nanoparticle size and modifying surface plasmon resonance, ultimately changing the liquid's color.
Yes! one common way it's added in scientific glass blowing is by fuming a bit of metal directly in a torch flame. You're vaporizing the metal in the fire and letting the fire deposit it on the surface of the molten glass, creating a 2d layer of deposited metal. Silver and gold being the most common.
Manganese is what us used to make purple glass Gold is use for red sometimes there can bsome darker purple ish spotting but generally that doesnt happen as he said in this video the color differnce is due to different types of light. When you make stained glass you are smelting in a furnace not under light the powdered metals used for the coloring are added while the glass is molten and that is how your old stained glass is made and high end glass rods which are used in glass "blowing". I put blowing in quotes because even though it is called glass blowing not all types of hot glass production actually requires any kind of blowing alot of artists don't blow anything they just shape solid masses of glass.
You can do this for almost all metals - the only thing being that the nanoparticles absorb wavelengths in the UV range and our eyes don't see this. Silver turns a weird yellow colour as its right on the edge of UV and visible. I did my PhD on copper nanoparticles - the solutions were anything from blue to murky green - depending not only the size but also how oxidised the nanoparticles are
Very cool! I've played around with a few different metals, the best results were from gold, silver (agreed on the weird yellow/brown color!) and titanium (the TiO2 bluish haze is very neat, although I think that's a rayleigh scattering instead?). I wasn't able to get copper to work well with this technique, seemed to aggregate and fall out of solution quickly. I suspect it needed some kind of capping agent to keep them dispersed?
So it is works as a filter too! How to extract those nanoparticles and put them in olive oil or water? Can we do the extraction with static electricity?
Cool, now put that colloidal solution into, say a smaller container like a cuvette and shoot it with laser around 532nm wavelength and check out the output on the other side of a wall about 2 feet away or more. You should see a cool effect: thermal self diffraction fringe patterns on the far-field. They'll look like concentric rings. If you don't see anything at first, you may have to increase the laser power, or the size of the nanoparticles are not resonant with the 532nm laser. Ideally, you want the particles to be about 80nms in size. Anyways, I hope you play around with it and post a video of it here. Super cool.
"The particles are purple because of surface plasmon resonance which is the same level of voodoo horseshit as alchemy. Is it purple because of ghosts or is it purple because of surface plasmon resonance" -explosions&fire
The reason is because of the way light reacts to small particles. For reference, look up how smoke turned the sky orange in San Francisco in 2020 or 2021 due to wildfires. What is happening here I would assume is similar. The smoke particles and these nano particles are having a similar effect on scattering of light.
It's so interesting to see full atoms behaving like ions! Gold ions often take on a reddish hue when in solution, and these nanoparticles do something similar despite having all their electrons.
It’s interesting how red and purple are/were symbols of wealth and or royalty and the nanoparticles of gold attributed with the same things are those colours by coincidence of course.
This is how all stained glass colors were and still are made. Copper silver gold cadmium and others all create different colored powers depending on the size of individual particles.
@@kaynef6637 it was a chemical process. Nano silver particles which appear yellow-orange were introduced using silver nitrate as early as the 1300’s. Into the 15th and 16th century more compounds such as gold chloride, and various copper compounds were introduced to create more colors. The base level science of the color change is due to the nano size of the introduced metals.
I got to make these in college. I still have the bottle, and it's stable 6 years later. We used a reaction to parcipitate the gold into solution though not a laser. How does the laser eching ensure all the particles are the same size?
It doesn't! It actually makes a fair mix of different sizes, so the colors that are produced tend to be on the more purple end of the spectrum (due to a mixture of sizes, and aggregates). You can skew it closer to red if you're really careful with settings but it's tough, and still not a homogenous mixture.
Fantastic to see this kind of thing on youtube! I actually make gold nanoparticles as part of my PhD and it's beautiful to see the colours you can create! 💜 I've made NPs right out to deep blues and cyans, and if you make elongated particles you can actually see multiple colours, like the solution will look blue when you shine light through it, but scatter some deep red back at you when lit from above
Hi Would be glad to get in touch with you.. i am doing research on pulsed laser synthesis of nanoparticles. Can u pass me you email...kind regards Nadeem
@@kingofclubs5514 I use the method described in "Mechanism of silver (I)-assisted growth of gold nanorods and bipyramids Mingzhao Liu, Philippe Guyot-Sionnest The Journal of Physical Chemistry B 109 (47), 22192-22200, 2005"
If you clicked yes and talk in front of your mobile, then indeed they do. But it is probably also a lot of confirmation bias since we tend to simply look up things we are interested in, and those connect to other things and so on 😅
I read about an ancient glass cup (I think it was Roman, but I'm not 100% sure) that had gold nanoparticles, as well as other elements, in the glass. Depending on the way it was illuminated, it would appear different colors, mostly greens or red, green if front-lit, red if lit from behind. What was really remarkable was that the color would change if certain poisons were present. I don't know if they've even been able to recreate the effect.
Fun fact: Certain stained glass windows used colloidal gold nanoparticles to color the glass a brilliant shade of red. Some of the most prestigious cathedrals will have the most important characters depicted in the glass dressed in red clothing for this reason, as the color was not just visually striking, but indicated importance and a royal vibe due to the fact that the expensive gold glass was reserved for only the most important figures.
Fun fact, the Romans unknowingly created gold nano particles in some of their glazes, that's why some Roman pottery will give a slight reddish colour when strong light are shine on it.
I did research in college with AuNPs as a detector. Theyre pretty cool, because they turn red as they aggregate and you can use that with UV-Vis spectroscopy to determine the concentration of whatever you are detecting for based on the ligand you attach.
Fun fact if you use a type of... boom chemical that has gold in it, called fulminated gold, when it... booms, it sprays a fine mist of gold particles that is a cloud of purple, explosions and fire did an amazing video about it
Fun example of this is with fired stained glass in many cathedrals, gold was(is) used to create red by making a gold suspension, painting atop the grayscale glass and refiring the pieces and they lit up reds and purples depending on the suspension makeup. Like medieval nano science!
Nifty. I've heard that nano bits of Au might be used in certain sorts of catalyzed organic chemistry. As strange or unlikely as that might sound. That sort of chemistry is pretty nifty, too. Never done that sort of chem, but I read the articles in C&EN. The source of the needed bits of gold were not discussed. My thanks for this clip as it explains how the particles might be made.
I don’t think I’ve ever seen someone in shorts try and explain plasmon resonance before. It’s a cool topic but usually taught in a class and not widely know about otherwise.
If you vaporize it onto hot glass you can get colors from even pink and orange. If you smoke glass pipes that change colors the color changing is due to either silver or gold being vaporized and fumed on to the hot glass and then when it covered with resin on the backside it even changes more just like anything else when you put a black background behind something that's partially transparent
Gold nano particles can also be easily created from reduction of gold ions with citrate. Conditions can be controlled to produce nanoparticles of specific sizes. Dispersions are stable for years. (One of my samples only died after 3 decades.)
There's a new color screen pixel technology that was invented recently that uses different particle sizes of some materials to replicate a wider range of colors with less energy consumption.
Gives you a completely different perspective on how small the modern CPU transistor is. Like a bunch of individual transistors can be dissolved in to water.
Fun fact: electrons' natural color is gold. You can tell because in certain setups, free electrons seep into the solution, and they appears as a solid gold cloud.
I don't need gold nanoparticles yet, but it's comforting to watch how easily I could make some. What about electric discharges between like two gold electrodes in isopropanol?
I am surprised that the laser can cross the barrier from air to liquid without getting weirdly bent. Is that a specific attribute of isopropanol? Such a cool effect, very nice and interesting short video 👍🏻
this could be one of the standard in simplest way of materials need but it cannot just be explain easily cause it has pacific field of relationship of states and also the coded formulation of components during the process of certain wave of laser(light) and the result has it's own high contrast of color just like a paper that being burn become black* but this one would be much rare
I think it’s just gold atom chains or groups or structures of particular sizes whose em properties reflect em energy at a particular frequency based on the interference pattern caused by the particle shape and the wavelength of the laser.
I work in environmental toxicology now, but early in my career as a scientist, I was a surface chemist in R&D at a diagnostics company. We were using gold nanoparticles bound to antibodies to detect biomarkers in plasma samples. The method of detection? Surface plasmon resonance :)
I wish yt would suggest me more of these type of shorts instead of all the garbage..
Well, that's why there is a subscription option. To get more of these types of videos.
@@janiso12345 Well yes and there's also a dislike button and the option to block a channel and no matter how often you use this on certain "genres", UA-cam still thinks it has to show you this crap. The algorythmn definitively works better outside shorts.
@@AriesSupertramp that's true.
Agreed
Algorithm just give like and the other put not interest
Fun fact: these colloidal gold particles are used in pregnancy tests, COVID tests, drug tests, etc.! That's why the line looks purplish-reddish! The particles are attached to antibodies that detect these substances :)
That's just the comment I was looking for thanks
Amazing fact. I never knew that. Now i understand the chemical reaction of rapid test kits. 🤓
The more you know... thanks for the info
Remember the technologist that got fired because he was reading the imprint line the machine that deposits antibody onto the test imprints a line with no color. Visible but colorless. I was glad that he got fired because I overheard him answering the phone using my name almost every time.
@@robertbolding4182 I don't quite get the Connections
This short is literally gold
Lol and purple 💜
Okay but what can we even use golored gold particulate contaminated water for
Half the people you know would drink that and expect internal healing 😉
I wonder how much it costed..
@@virtualenvironmentfellowsh6671 ALCHEMY BABY!
Purple and yellow being complimentary makes this such an aesthetic
Excellent video! We are performing this daily in our lab, I'm always captivated by the magical appeal that astonishes students and even children.
By maintaining laser parameters, a simple switch of liquids in which the laser ablation is performed can alter the color of the produced liquid. For instance, using tap water from different locations introduces variations in salts, minerals, etc., impacting nanoparticle size and modifying surface plasmon resonance, ultimately changing the liquid's color.
Are they healthy enough to ingest?
@@NickkaDUB i want to drink it too
This is a colloidal solution of gold popularly known as ’Gold Sol’.
Due to its specific purple colour it's also called as ’Purple of Cassius’...
And I thought the video itself was way out there. But now, I have to ask. Can we paint with this purple gold?
@@Michael-ij6kg yes you can. in fact it was discovered that many old paintings use this type of painting.
Ncert nostalgia
Purple of cassius. You know purple is a modern word for violet. Completely made up word.
Insert…
So that’s why gold-fumed glass looks amethyst. Amazing.
If you add gold to molten glass it turns red. Old ruby red was very expensive for that reason.
I want to drink the potion
Yes! one common way it's added in scientific glass blowing is by fuming a bit of metal directly in a torch flame. You're vaporizing the metal in the fire and letting the fire deposit it on the surface of the molten glass, creating a 2d layer of deposited metal. Silver and gold being the most common.
Is that also where rose gold comes from?
Manganese is what us used to make purple glass Gold is use for red sometimes there can bsome darker purple ish spotting but generally that doesnt happen as he said in this video the color differnce is due to different types of light. When you make stained glass you are smelting in a furnace not under light the powdered metals used for the coloring are added while the glass is molten and that is how your old stained glass is made and high end glass rods which are used in glass "blowing". I put blowing in quotes because even though it is called glass blowing not all types of hot glass production actually requires any kind of blowing alot of artists don't blow anything they just shape solid masses of glass.
Back in the old days glass was colored red by adding gold. Railroad switch lamps were red or green made by adding either gold or copper to the glass.
They still do that to stain glass and make bongs
Silver makes blue glass
Copper green
Iron Red, also the gold nano particles are used to create cathedral glass
you meant.. starch of like glass ( volcanic glass tile's ) and it's mixed ( jade'ed ???😂
Wow... What's really gold here is a YT short with a proper ending and a few seconds of pause at the end. Great work sir!
The pause at the end makes it
I love how you break things down. Makes it so easy to understand!
You can do this for almost all metals - the only thing being that the nanoparticles absorb wavelengths in the UV range and our eyes don't see this.
Silver turns a weird yellow colour as its right on the edge of UV and visible.
I did my PhD on copper nanoparticles - the solutions were anything from blue to murky green - depending not only the size but also how oxidised the nanoparticles are
Very cool! I've played around with a few different metals, the best results were from gold, silver (agreed on the weird yellow/brown color!) and titanium (the TiO2 bluish haze is very neat, although I think that's a rayleigh scattering instead?). I wasn't able to get copper to work well with this technique, seemed to aggregate and fall out of solution quickly. I suspect it needed some kind of capping agent to keep them dispersed?
Can we retrieve back gold from it.... Please respond
@@bahattarhoor678 ofcourse you can, it's still in there
So it is works as a filter too!
How to extract those nanoparticles and put them in olive oil or water? Can we do the extraction with static electricity?
Can we create a drinkable solution?
Cool, now put that colloidal solution into, say a smaller container like a cuvette and shoot it with laser around 532nm wavelength and check out the output on the other side of a wall about 2 feet away or more. You should see a cool effect: thermal self diffraction fringe patterns on the far-field. They'll look like concentric rings. If you don't see anything at first, you may have to increase the laser power, or the size of the nanoparticles are not resonant with the 532nm laser. Ideally, you want the particles to be about 80nms in size. Anyways, I hope you play around with it and post a video of it here. Super cool.
Oh, that sounds really cool! I'll see if I can replicate that, thanks for the tip!
Any update my friend? I would love to see that!
@@BreakingTapsHAVE YOU TRIED IT YET, WE'VE BEEN WAITING FOR OVER A YEAR
@@BreakingTaps remember this? Were you able to replicate?
@@joshaulove Bro lost his sanity trying to replicate it.
"The particles are purple because of surface plasmon resonance which is the same level of voodoo horseshit as alchemy. Is it purple because of ghosts or is it purple because of surface plasmon resonance" -explosions&fire
And thank fuck it's not yellow!
I could stick these crystals in my braces and get a diffraction pattern on my next dentist visit. My teeth are still fucked though
- E&F
The reason is because of the way light reacts to small particles. For reference, look up how smoke turned the sky orange in San Francisco in 2020 or 2021 due to wildfires. What is happening here I would assume is similar. The smoke particles and these nano particles are having a similar effect on scattering of light.
Hey fellow Explosions & Fire connoisseurs.
To you, a moron, it's about the same thing, to someone who understands chemistry it's just....science
It's so interesting to see full atoms behaving like ions! Gold ions often take on a reddish hue when in solution, and these nanoparticles do something similar despite having all their electrons.
It’s interesting how red and purple are/were symbols of wealth and or royalty and the nanoparticles of gold attributed with the same things are those colours by coincidence of course.
This is how all stained glass colors were and still are made. Copper silver gold cadmium and others all create different colored powers depending on the size of individual particles.
Ah yes, ye olde fiber laser
Yes gold is used in pink glass
You say all stained glass ? Where did they get lasers to make stained glass in the 1400s ? It’s a fair question
@@kaynef6637 it was a chemical process. Nano silver particles which appear yellow-orange were introduced using silver nitrate as early as the 1300’s. Into the 15th and 16th century more compounds such as gold chloride, and various copper compounds were introduced to create more colors. The base level science of the color change is due to the nano size of the introduced metals.
This is seriously the stuff we need to be seeing on our shorts.
@@GDP445haha tell us
Gold underwear?
soo rare to see those stuff like this it also required to put out those components
But I wear pants
Sometimes you learn things that make you go “Huh “
I love how you caught the sound of the laser hitting the gold. That was cool.
As a kid I was in Venice. I visited a glass factory. They used gold to produce the red color inside the glass.
That looked like goddamn magic. Gold, plasma circles, changing fluid colours, etc
I got to make these in college. I still have the bottle, and it's stable 6 years later. We used a reaction to parcipitate the gold into solution though not a laser. How does the laser eching ensure all the particles are the same size?
I don't know, you're the one who went to "collage", you tell me 😉
It doesn't! It actually makes a fair mix of different sizes, so the colors that are produced tend to be on the more purple end of the spectrum (due to a mixture of sizes, and aggregates). You can skew it closer to red if you're really careful with settings but it's tough, and still not a homogenous mixture.
@@internetcancer1672 too self aware…
@@internetcancer1672 "collage" LMAO couldn't even spell it right
@@mineinmonkey9787 duh he didn't went to collage not his fault
Fantastic to see this kind of thing on youtube! I actually make gold nanoparticles as part of my PhD and it's beautiful to see the colours you can create! 💜
I've made NPs right out to deep blues and cyans, and if you make elongated particles you can actually see multiple colours, like the solution will look blue when you shine light through it, but scatter some deep red back at you when lit from above
Hi
Would be glad to get in touch with you.. i am doing research on pulsed laser synthesis of nanoparticles. Can u pass me you email...kind regards
Nadeem
What synthesis method do you actually use?
Hi would like to be in touch with you coz I am doing my research to make 80nm GNPs I hope you can help me
@@kingofclubs5514 I use the method described in "Mechanism of silver (I)-assisted growth of gold nanorods and bipyramids
Mingzhao Liu, Philippe Guyot-Sionnest
The Journal of Physical Chemistry B 109 (47), 22192-22200, 2005"
That's why red glass was made by adding gold
"Is it purple because of photoplasmaresonance ? Or is purple because of ghosts ?
It's 50 50 either way "
~TOM (extractions&fire)
Definitely ghosts.
This very moment I am sure UA-cam has a camera in my house, cuz literally 5 minutes ago i finished reading about Cassius purple colloid from my book!
Say hello to Alexa!
No. Google is in you. Its in all of us. Google is all of us all of the time.
Buhahahah.. big bro is watching you..
But they do , we were just saying you should stop putting off those dishes from yesterday 😂
If you clicked yes and talk in front of your mobile, then indeed they do. But it is probably also a lot of confirmation bias since we tend to simply look up things we are interested in, and those connect to other things and so on 😅
So Thanos was made of gold nano particles, thanks
MARVEL
been learning a lot of new things about gold lately in these shorts like “purple gold”
This lies in my field of work. I'd love to see more such work covered in YT. Purely motivating. ❤
You managed to make a short that felt long. Your voice helps, great recording.
Thanks!
I read about an ancient glass cup (I think it was Roman, but I'm not 100% sure) that had gold nanoparticles, as well as other elements, in the glass. Depending on the way it was illuminated, it would appear different colors, mostly greens or red, green if front-lit, red if lit from behind. What was really remarkable was that the color would change if certain poisons were present. I don't know if they've even been able to recreate the effect.
It’s called the Lycurgus Cup. Pretty cool!
Look up "glass fuming"
Don't lie
@@SoldatRaggio *lay
@@SoldatRaggio no it’s real.
As someone who works with glass and tiny amounts of gold to create color on the glass I'm familiar with these colors.
I imagine that's the whole thing with that ancient glass of changes from green to Red before nanochemistry was around
Right on. I remeber a pipe blower saying he used gold and silver fumes to make them change like that
I am also familiar with purple and red.
Nah, I'll still stick with Tom's theory that it's purple because of ghosts.
Next time try making gold nanoparticles by detonating gold fulminate lol
Fun fact:
Certain stained glass windows used colloidal gold nanoparticles to color the glass a brilliant shade of red. Some of the most prestigious cathedrals will have the most important characters depicted in the glass dressed in red clothing for this reason, as the color was not just visually striking, but indicated importance and a royal vibe due to the fact that the expensive gold glass was reserved for only the most important figures.
My man out here making the heart shaped herb out here
Haha 😂
I bet you can make other colors if you get the size just right and don't have other particle sizes to pollute it
You actually can, with CdSe (Cadmium Selenide Nanoparticles)
You can do with gold too. But the size control is not as easy as in the bottom up methods.
Fun fact, the Romans unknowingly created gold nano particles in some of their glazes, that's why some Roman pottery will give a slight reddish colour when strong light are shine on it.
Ohh wow, so the coloration persists. Fascinating
I did research in college with AuNPs as a detector. Theyre pretty cool, because they turn red as they aggregate and you can use that with UV-Vis spectroscopy to determine the concentration of whatever you are detecting for based on the ligand you attach.
*_Accidentally drinks forbidden grape juice_*
Fun fact if you use a type of... boom chemical that has gold in it, called fulminated gold, when it... booms, it sprays a fine mist of gold particles that is a cloud of purple, explosions and fire did an amazing video about it
Yo, the stuff you show on your UA-cam is awesome bro. Keep up the good videos
Fun example of this is with fired stained glass in many cathedrals, gold was(is) used to create red by making a gold suspension, painting atop the grayscale glass and refiring the pieces and they lit up reds and purples depending on the suspension makeup. Like medieval nano science!
"It a water of gold!!!, Drink it for wealth.... Huaaa" 🤣 i wonder what happened if we drink it?
Also good for plateing a meta material to hold a protective layer to bonding other circuits to the point of a micron or the neutrality of insulation
Niceeeee, I like it, keep posting more like these curious knowledgeable stuff
I have only synthesized AuNPs using the Turkevich citrate method but have never seen this kind of synthesis. Very interesting
Cool that gold and purple are like known pairs before they ever found this out
Reminds me that gold plating solution is this gorgeous purple usually too
I remember a story where a person stored their gold as nanoparticle solution, and they succeeded to prevent it from being stolen
Fun fact, with the nanoparticles, you can paint and then melt to get a super thin layer of gold.
Slowly discovering gold's secret purple identity and honestly I'm just glad it chose a complimentary color
Gold tells you the colors it goes best with. Purple, red, brown. Makes life easy!
I used to make gold nanoparticles all the time as research assistant when getting my bs in chemistry. I had no clue you could make them with a lazer 😮
The real question is if I where to drink it what would it do.
Nifty. I've heard that nano bits of Au might be used in certain sorts of catalyzed organic chemistry. As strange or unlikely as that might sound. That sort of chemistry is pretty nifty, too. Never done that sort of chem, but I read the articles in C&EN. The source of the needed bits of gold were not discussed. My thanks for this clip as it explains how the particles might be made.
I don’t think I’ve ever seen someone in shorts try and explain plasmon resonance before. It’s a cool topic but usually taught in a class and not widely know about otherwise.
There's a gold aluminum alloy that is same shade of purple 💜
(non) Scientific comment here, but dat zoom in on the gold took Me back to simpler times for some reason, like Star Wars (Shoutout FinnRey).
Annunaki. Gold. Royals. Purple.
If you vaporize it onto hot glass you can get colors from even pink and orange.
If you smoke glass pipes that change colors the color changing is due to either silver or gold being vaporized and fumed on to the hot glass and then when it covered with resin on the backside it even changes more just like anything else when you put a black background behind something that's partially transparent
this is the same concept used when creating different colors in glass and why the red and pink colors are so much more expensive than other colors !
Magic? Magic. Sorcery even.
Gold nano particles can also be easily created from reduction of gold ions with citrate. Conditions can be controlled to produce nanoparticles of specific sizes. Dispersions are stable for years. (One of my samples only died after 3 decades.)
Now We know how some people have Golden blood
I would never expect the solution to turn yellow.
Same plasmon resonance in nanostructures in gold (silver, too), can be used to enhance spectroscopy.
I want to see you make some "gold ruby glass" with some gold nanoparticles but with the smaller nanoparticles for some purple glass.
That purple etching looks like something out of StartTrek😮Very cool ❤️
U can use just plain old water and it'll still be purplish color or a clear electrolyte
Fun fact (I think I remember). Because of how the nanoprticles make a violet hue, solutions like this were used for stained glass decorations
That is fantastical, thanks for making this video!
The wavelength that was used is not the only one that can ablate gold. Try a green laser and observe what color the particles make
There's a new color screen pixel technology that was invented recently that uses different particle sizes of some materials to replicate a wider range of colors with less energy consumption.
Saw similar purple color while performing gold sputtering on my sample.
Gives you a completely different perspective on how small the modern CPU transistor is. Like a bunch of individual transistors can be dissolved in to water.
You can't fool me bro, that's magic. That's straight up the arcane arts
bro made health potions
Some of the best red car paints have gold particles in them, which is why that color often commands a premium price.
Fun fact: electrons' natural color is gold. You can tell because in certain setups, free electrons seep into the solution, and they appears as a solid gold cloud.
Interesting, possibly as an alternative for red food coloring. It seems to have an outsized effect for the amount of gold that is used.
The paper first explaining this phenomenon was on why mixing gold and glass made cranberry glass not golden glass. It won a Nobel prize I believe.
Reasons red glass for antique Tiffany lampshades is so expensive, it’s made with gold 😊
I'm doing exactly this right now, to determine the best method for creating a rainbow of colours.
But... Does it have a use? Or did we just watch gold be blown up 😂
Gold and purple or gold and red really compliment each other.
You can use low DC voltage to do the same thing with less energy through electrolysis.
I remember making some of these, actually. Still have the vial of gold nanoparticles somewhere...
“Gold Shot” now available at your nearest cocktail bar
Needed me a purple gold chain now
wasnt even expecting yellow too
The sound it makes is so cool
I don't need gold nanoparticles yet, but it's comforting to watch how easily I could make some. What about electric discharges between like two gold electrodes in isopropanol?
That is the prettiest purple i have ever seen...
I am surprised that the laser can cross the barrier from air to liquid without getting weirdly bent. Is that a specific attribute of isopropanol? Such a cool effect, very nice and interesting short video 👍🏻
this could be one of the standard in simplest way of materials need but it cannot just be explain easily cause it has pacific field of relationship of states and also the coded formulation of components during the process of certain wave of laser(light) and the result has it's own high contrast of color just like a paper that being burn become black* but this one would be much rare
And now you know how actual red glass was made.
I think it’s just gold atom chains or groups or structures of particular sizes whose em properties reflect em energy at a particular frequency based on the interference pattern caused by the particle shape and the wavelength of the laser.
I work in environmental toxicology now, but early in my career as a scientist, I was a surface chemist in R&D at a diagnostics company. We were using gold nanoparticles bound to antibodies to detect biomarkers in plasma samples. The method of detection? Surface plasmon resonance :)