Passing a high powered laser beam across a slab of gold releases a foam of red gold nanoparticles
Passing a high powered laser beam across a slab of gold releases a foam of red gold nanoparticles
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Wednesday, August 12, 2020
Nikola Tesla
I do not think you can name many great inventions that have been made by married men
Albert Einstein
magination is more important than knowledge.
**Explanation**
—
The effect shown in this video is called [laser ablation](https://en.wikipedia.org/wiki/Laser_ablation). The key idea is that a high power laser beam can pack enough of a punch to strip of small particles from a slab of solid metal, in this case gold [as shown in this cartoon](https://i.imgur.com/zeUdgzv.png). In this case the particles are so small that they fall in the nanometer size, hence the term nanoparticles. The interesting thing about this size range is that the optical properties of these particles will depend on their size [as shown here](https://i.imgur.com/ojVNhu0.png). For this particular size range the particles produce solutions that look red to our eyes as shown in this clip.
P.S. if you are curious about the color of the solution, it is due to an effect called a [surface plasmon resonance (SPR).](https://en.wikipedia.org/wiki/Surface_plasmon_resonance) To put it simply, these SPR’s show how a sea of electrons in a metal interact with light when you squeeze the metal into a small particle or a thin film. It is this effect that largely explains the [vivid color of stained glass windows in old churches such as Notre Dame de Paris.](http://i.imgur.com/9L1aYmW.jpg)
___
Source for the GIF: [This video](https://www.youtube.com/watch?v=XxMA3dSblek)
Gold smoke. Don’t breathe this.
Hey the company I interned for last summer specializes in this! this video was ripped from their site lol, here’s the link to it!
http://nano.imra.com/technology/
They were a great company to work for and do a lot of cool work with femtosecond lasers.
What could something like this be used for?
At first I thought it was a new way of cooking an egg… then I read the title 🤨
What size are the created particles?
Does this work with silver?
And is it expensive? The lab I work in does a lot of work with silver nanoparticles and we haven’t quite nailed synthesis yet. Also, silica coated silver is hella costly.
Why is there a black fidget spinner?
You can’t fool me that’s flan
[deleted]
Does this work with bitcoin too?
Pretty cool, but what makes it a “foam”?
If I inhale this, do I become Ironman?
*Lucy Ashton’s Song*
Look not thou on beauty’s charming,
Sit thou still when kings are arming,
Taste not when the wine-cup glistens,
Speak not when the people listens,
Stop thine ear against the singer,
From the red gold keep thy finger;
Vacant heart and hand and eye,
Easy live and quiet die.
(Sir Walter Scott)
Kinda unrelated but this reminds me of when I used to work as a contractor for Boeing. They spray gold paint on certain parts because it won’t ever rust. the cool thing was that it is cherry red when they spray it on the parts and after it is baked it turned bright chrome gold. One little glass of paint was $10,000 too
*Smelting has increased to 170*
Inhale it.
###Which btw are cancerous as fuck.
Burning gold and silver into a vapor is how glass blowers get that purple, blue and yellow effect. I wonder if they used lasers they could better control the colors and patterns? They currently use various types of torches and can control the flame size and gas/oxygen levels.
Vape it
Vape it
New Monarchy Regalia
I thought you were cooking an egg yolk without cooking the whites.
For some reason i read that as a slab of cheese
But no, man, we can’t make lightsabers, we don’t have the technology. Shame on you, man.
If you smoke it will it get you high?
Is that…is that a mini lightsaber?
Did you smell it?
Is this similar to how gold fumed glass is made, but just with a laser and not a oxy torch?
Can you compress these particles in a small tube that is designed to generate electricty and then shake the tube to make electricity or something? since they are in the air i would imagine that violently moving them in a tube might do something or something? i donno man can someone elaborate what the point of these nano particles are?
if it bleeds, we can kill it
*Nanomachines,*
#***SON!!!!***
You mean it releases an evil miasma…
How many atoms might be in each particle, on average?
Hey so quick question if I sprinkle this on my food will it, or will it not make my dookie twinkle?
I thought that was an egg
We get it, you vape.
If you did this to iron would the nanoparticles be magnetic
Interestingly, when you can decrease the separation distance between these nanoparticles they go from a deep red colour to bright blue. Makes them really useful as visual markers for certain bio-reactions.
I though this was an egg cooking at first
Casual slabs of gold laying around, amirite?
What kind of mass loss are we looking at here?
This must be how Apple makes Rose Gold.
Kids in Africa could have eaten that gold
Bet you can get mega baked off that.
That is the tiniest light saber I’ve ever seen!
I (almost) fully understand the “how”, but WHY do this? What are gold nana party kills used for?
Edit: *nanoparticles. Damn voice recognition!
No, Mr. Bond, I expect you to die!
Cool! Let me go get my slab of gold so I can try this at home!
One does not get what one is looking at.
“Don’t breathe this”
-Will It Blend