Fantastic UV photochromic powder
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- Опубликовано: 19 мар 2023
- These amazing pigment powders change from white to a colour when exposed to UV or near-UV light, and then gradually reset to white again afterwards. Even a small amount of pigment in resin has a very distinct effect.
The packaging comes with a strong set of warnings including risks of flammable dust, inhalation risks, contact sensitisation and eye damage. Further investigation of MSDS data sheets suggest these may be aimed at high exposure industrial use, but there's no harm taking precautions.
The powder consists of the photochromic chemicals microencapsulated for protection when used in things like inks. It's ultra fine, and quite hard to scoop out a controlled portion.
Only a small amount is needed in resin to give a vivid colour change, as shown in the video.
In the UK I got this from an eBay seller called perfectpearlsandpigments (not a sponsor) who seem to supply exotic pearlescent glitter additives to the specialist paint industry.
www.ebay.co.uk/itm/253279862369
A quick search shows that the pigment is also available from the usual online suppliers, including unusual photochromic glitter particles for nail-art.
The effect is very impressive. A solid change of colour when exposed to wavelengths in the near UV to UVA region (400nm or less). A blue LED did not trigger the effect, but a near-UV one did.
The change is also vivid in sunlight which is roughly 3% UVA.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- www.bigclive.com/coffee.htm
This also keeps the channel independent of RUclips's algorithm quirks, allowing it to be a bit more dangerous and naughty.
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Chemist here. Photochromic compounds are really cool. They work by breaking or creating a bond when exposed to UV light. This creates a chemical structure that is unstable, so it eventually breaks down back to the original compound, causing the color to turn back to normal. Some photochromic chemicals even work by twisting a ring by a 90° angle upon exposure to light; eventually the ring twists back and the original color is restored. Decades of research have gone into understanding how these work
okay, chemist boy. figure how to make it last forever. NOW.
@@Valspartame_Maelstrom - It's actually easier to make a permanent change than a temporary one. That's why all the work on the various "polarizing' pigments, such as the original 'clear to grey' glasses. (forgot the brand). I had a pair - they eventually went about halfway and stopped changing.
what about the health warnings, are they justified?
Intersting! So is that what is in contact lenses that change their colour with UV-Exposure?
Your reference to twisting makes me ask if these are similar chemicals to those used in LCDs?
You can save a lot of pigment, especially when you deal with these ultrafine powders as you can use their stickiness to your advantage.
Instead of mixing it with the resin, use a brush to "paint" the inside of the mold with the powder, then pour the resin.
That would also allow embedding the LED.
Or in a clear varnish applied to the outside.
until today I never thought how putting California labels on everything can actually make all warnings useless. Kinda like the boy who cried wolf
That was not clives intended effect, I think hes genuinely that ignorant. Love you big guy, but that statement was poop sauce.
That is how we viewed them when I worked in a retail store in the mall. Those warnings became a joke, even some warnings saying cannot be sold in California, which yes the items were still sold in the state. We found them on almost everything: Pens, buckles, jewelry, shirts, "adult back massagers," and even posters had warnings with one style of those also having a prohibited "Not for sale in California" warning.
If the USA was a work boot, California is the stinky dog crap we are desperately trying to scrape off….
I despise California.
@@MichaelOfRohan The california warning s are a scam. It's how the corrupt california government scams money out of anyone that sells anything there. 99% of what has the california warnings on it are perfectly safe. Only stupid and ignorant people worry about it.
@@MichaelOfRohan Well, they are pretty much on everything, so I don't see how useful they are. They are routinely joked about and I doubt they've had any effect at all except to line the lawyer's pockets when some MFG forgets to label something.
"The British dollar store, Poundland..."
Yes, yes, Ashens has taught all of us what that is. Please continue.
Reminds me of a wedding I attended many years ago. They held the reception in a honky tonk bar with "black lights" all over the place. The bride wore a thin white dress and discovered that the lingerie she had on under it was VERY UV reactive. The dress however was not. When she would get near the lights her underthings glowed so well you could tell the lace pattern on them!
You have a very eclectic taste Clive, so many different things that you like. I love it.
"Now I don't know if these are California grade warnings, or they're actual real warnings."
The normalcy at which you said this sentence, and the depth of your accent...
I'm glad to see other humans in the world understand what regular Americans deal with on a daily.
That shit cracked a genuine smile on me for the first time today.
That reminds me of that some cars now have 2 check engine lights. One that lights up whenever the law requires the check engine light to light up and the other one that turns on when the ECU detects a fault that needs repair.
Pigment technology has changed in the last 30 years!
Basic color change to UV sensitive pigments make automotive styles so cool!
One of the science classes at my elementary school used something like this. A bracelet with those little plastic beads secured by a nylon string, but when exposed to ultraviolet, they shift from an off-white or beige to somewhat noticeable colors. They didn't turn as vivid as the powder shown here, but I remembered that little science trick from when I was younger.
Of course it is pink. The dedication of this channel to empinkening the world is a thing of wonder.
Well I never thought I'd see BigClive showing us his pink rosebud on video!
I had some 3D printer filament with this stuff in it. I gifted a friend a print with it but didn't tell them it turned pink in the sun, and it was quite funny to see their reaction when they looked at it outdoors
It'd be quite funny to see anyone's reaction when you gave them a 3d printed color changing dildo, yes!
That sounds fun, do you remember what filament?
I use iSANMATE's UV-reactive filament to make planter pots and such. It's neat.
I love these unusual resin+pigment projects so much! Now I'm going to have to look into what compounds make this work and why they're dangerous. haha
I'm wondering if they're just making the usual declarations for factory workers exposed to it all day.
I look at dust that fine and think, if that gets in my lungs it's never coming out
It’s dangerous because of the particle size. It’s such a fine powder that it can be breathed in easily and cause very serious lung problems.
It might be like coal miner's lung, or even second hand smoke lung. Could you imagine them using the lights to try to do autopsies, or even just during examinations, and the lung changes colour? (Or in the case of the other pigment, glows?)
haha
Wearing a dust mask, I hope :). Interesting experiments and cute roses, I love them!
Every video is good for poking some fun at Karenfornia.
I've helped source and deal with industrial amounts of similar identical pigments for a few decades. Helped my dad developed a synthetic material used in many industries. Mostly synthetic mother-of-pearl, Ivory, stag, ect.... Used in the gun and knife industry, guitar manufacturing, pool cue, and countless others. Made in large sheets, rods, or other configurations as requested by the client. Not all of it is pretty synthetics for the sake of aesthetics. There are also several variations used in more industrial processes. Think micarta or G10 but specialized for the clients needs. Whether that is electrical insulation with massive heat resistance, extreme flexibility, industry leading UV resistance or what-have-you. Something he developed around the same time was the idea and process for stabilizing materials like wood and other exotics used in the gun and knife industry. So like making carbon fiber or fiber glass but instead of using the fibers... Using wood or Basically the impregnation of pretty much any material imaginable with resin. It may have been alluded to back then somewhere online or in a book or something I don't know... But it was way before any of the exotic material suppliers had it in their catalogs. It's become such a huge part of so many industries, in particular the knife making world... I can't imagine how much of that stuff is used every year. It's in every knife making supplies catalogs and website in the world and it's a huge part of their handle materials. Stabilization was huge for many industries.
My father is such a badass. He's been a taxidermist for over sixty years, he'll be 83 this summer, going through second round of chemo, and still working seven days a week doing taxidermy and making composite material because he wants to. I take him a few fifty-gallon drums of resin every month or so, and help him source things online because he's tied to a landline only.... (and I totally understand that after doing it this way so long.)
When he was developing over 20 years ago I was just old enough to learn how to use the internet pre Google. 2001 I think. I made some contacts, and solved some real roadblocks that drained his life savings and wasted three years of his life trying to develop this stuff.
He was completely successful and trailblazing and got 99% of the way there. Dudes legitimately just smart as hell. Working out everything himself with equations and crazy chemical stuff. Based on what he could pull together from old patents and things like that. And just hit general knowledge of chemistry and material science
So to make it clear... I didn't solve anything....but simply found a few phone numbers and a few company reps willing to answer questions (without spending a quarter of a million dollars first. Or signing an NDA because a lot of this was still brand new patented shit)
Once everything was settled and the process figured out... He made all his own molds and started shipping and selling the material to the largest knife company in the world. Who owns most all of the knife companies people are familiar with. Hundreds and hundreds of pounds at a time. Then the colt company who makes firearms. And many other firearm manufacturers. Gibson and fender guitar companies along with several others. Which is one of the things that caught my attention and was "instrumental"😁......
I will say.... the loop holes have gotten more difficult to navigate over the last few decades. They don't like regular folks making this stuff without a huge factory and the facilities to properly deal with it... But he's kept it going thankfully. Probably because the fumes are too strong for any environmental agency to get near the building without passing out. I told his oncologist that that's probably why he's going to beat the cancer. His body simply to toxic for it to live in. And what's left is probably stabilized with resin and nicotine.
Not only have the price of resins and composites skyrocketed nearly triple.... So instead of $1,500 for a 50-gallon drum it can be upwards of five thousand or more according to the type. The pigments have been snagged by big conglomerates and the colors patented and have to be licensed. So just getting a hold of them in a few kilos at a time is a Herculean task. I've been able to keep it up but it's not always fun or easy. Luckily a few kilos in such a concentrated pigment could probably die the whole of the Pacific Ocean. So they last him a year or two per color. Of course there's about 100 colors he uses to mix up over 500 different colors and variations of his material. So yeah it's been fun. Like the world's hardest longest scavenger hunt. Not just tracking them down but then when they are absorbed by other corporations or license to another company and completely... That's not documented anywhere in just tracking it down can be a nightmare. Not to mention buying it in smaller quantities like that not truck loads at a time... And then trying to produce enough documentation for them to sell it to you. It's a lot of fun. Like whittling down your fingers with razor blades
Even when buying resin hundreds of gallons at a time... Big conglomerates absorb other conglomerates and they don't want to sell to anyone but the huge industrial manufacturers who are overseas and not limited by modern hazard and chemical rules. And they're sure as hell not going to deliver a few hundred gallons of resin somewhere out in the country. High Quality resins and pigment stuff like this is used in the boating and yacht manufacturing industries among countless others... Would just absolutely blow your mind of you laid it all out on a piece of paper and tried to comprehend it. There's probably more of this shit used by weight than the plastic used to make water bottles.
As I got older and got into engineering and science type stuff... I did have to send countless samples off and call in some favors to have various materials reverse-engineered in Labs with crazy cool stuff like electron microscopes ect....
I can't speak for that pigment in you video.... but some of them are as potentially hazardous as any other aerosolized powder could possibly be. (I mean unless it was like radioactive or something.... Which wouldn't surprise me with some of the videos you made showing Amazon sketchiness). It Makes carbon fiber and fiberglass particulate look like a cuddly teddy bear in comparison.
I'll really miss my dad once he's gone. He's a tough sob ❤
Hey clive, I make this! and, I make it in california! its fairly safe, dont eat it obviously. warnings are more so related to the very small size of the photochromic pigments.
These dyes can also be microencapsulated used for other purposes.
I think these ones are microencapsulated.
@@bigclivedotcom I'll see if I can give you an easy way to tell. Generally the micro encapsulated ones will have little to no background color when not activated.
As soon as the silicone mold was pulled out it made me think of the nile red video with the glowing baby
The UV LEDs embedded in Photochromic epoxy seems like something that could be explored further. Since it seems to block UV , it might be good to put a thin coating on the surface of the mold and then fill the rest of it up with a UV transparent resin. Or maybe even fill the rest up with a fluorescent or phosphorescent resin if they allow for the UV to pass through to the photochromic resin.
This is the best video of yours by a long shot!!
I used some filament that changed red under UV to make a rather large print. About 3/4 done, I ran out of the color change, so I finished the print with glow-in-the-dark. Really awesome effect to see part of it turn red and rest begin to glow.
Cool! Have a picture or video of it anywhere?
@@SilveniumTheDrifter I tried to share the link to my FB, but YT nixed it, so I've uploaded the video to my RUclips channel. 🙂
I still remember painting my friends wall with liquid laundry detergent mixed with the powdered kind. It was UV reactive, and very powerfully. I read it was the phosphorus
The components in it that interact with UV are called "optical brighteners", the absorb the unseen UV in daylight and re-emit it as visible light to make your whites seem "whiter than white".
You can buy photochromic threads and woven materials for colour-changing needlework, and also clear liquids that change colour. Shining a UV / "blue" laser pointer through the latter is particularly fun.
The progressive charge/linger effect is utterly fascinating. I've often wondered about the behaviour of glow-in-the-dark glow stars etc. It hadn't occurred to me that there would be a progressive "charge" period dependent upon the make up of the material and the intensity of the charge source. Fascinating, thank you Clive.
Thank you for another nice and relaxing video. I am not a maker, but I do enjoy the topics you show us. All the best to you and your loved ones.
”watch your eyes it's about to get bright in here"
You are so thoughtful and sweet fuck
Reminds me of the highly coveted Micro Machines that would turn purple in the sun!!
Very very cool.
I had some that changed colour with heat, but the ones that turned purple in the sun were like actual magic!!
When I was 15 years old, I worked a summer at International Färg AB, the local paint manufacturer, as a stock worker. They had some really nice chemicals, one that the warning label said "skin contact gives cancer".
I worked for many years in the printing supplies industry, and at that time there were some very unpleasant chemicals in our warehouse. One marked "Death by inhalation" caused us to handle it with more than usual care !
Thank you for another excellent video bringing yet another very interesting phenomenon to our attention. In reading a bit about photochromic technology online, it's a fascinating area in chemical technology and one that as found many uses !!
Fun! Living in California, I certainly understand the references to this state re: warnings... :) Strange fact, several years ago, I ordered and purchased a couple of really cheap torchiere lamps with attached reading lamp from Walmart. Then wanted another couple and found that they were NOT available in California. Still have no idea why, they're just metal and plastic. Wish there was a way to find out just why they're banned. So I had them sent to a friend in Arizona and next time they visited, they brought them with... :)
Some products have been banned in California because the CA Atty General sued the company for false advertising or other consumer complaints. The whole US should do more to protect consumers against fake or faulty products.
Did the torchiere include lightbulbs? CA has energy efficiency requirements and quality requirements for lightbulbs. A lot of cheap LED bulbs can't be sold in CA due to poor color quality (CRI < 90 is not allowed) or flickering.
@@tim1724 More likely due to the plated plastic, the stuff that lasts is not as environmentally friendly, plus they likely spray painted them with a non water based paint.
The govermants have to much power, people should take back their freedom completely.
These usually used to have a fitting for a 117mm linear halogen floodlight bulb (300/500w) on top. I suspect it was mainly for the energy rating of this or perhaps the fact it did not have a protective glass over. I can remember the smell of the roasting insects.......
This video made me feel all glowy.
Fascinating stuff. That is an idea for the currently unknown project.
‘…California warnings instead of real warnings.’ That got me laughing!
Wow, those are really cool! I didn't know such things existed. SO many project possibilities with that stuff :) PS, your LED tester is simplisticly fantastic. A video on how to make our own would be fun!
ruclips.net/video/A2c2JMWm5u0/видео.html
Love it when Big Clive gets the gloves on ;)
It'd be useful in a low tech way of showing if something has briefly triggered say a sensor, which lights a UV LED for said brief moment, but the pigment shows it has lit for a lot longer. Being self resetting, it's more convenient in some cases than something mechanical.
These could be really interesting as notifications. Like having semi transparent mosaic tiles in the kitchen changing color to notify you of the trash being picked up today.
Kind of like an e-ink version of an LED but auto resets after a while
Never expected I'd get to see Big Clives pink rosebud
Thanks for the awesome video! Always fun and always teach something.
Blacklight posters just got a new lease of life
I got some nice Fluorescent Yellow PLA once. It was amazing how bright it looked when you pointed a small UV LED at it.
The California warnings usually start with "Proposition 65" or "Prop 65" and include the words "cancer, birth defects, and reproductive harm".
I don't think the warnings are California-only.
Would be better if they sold this as a paste instead of powder. It's got the carcinogenic warning symbol on the package and I would be more concerned about breathing it in than getting a bit on my skin.
The UK Hazard symbol's mean (from left to right): Health Hazard, Serious Health Hazard, Flammable. Nothing specific in the symbols about causing cancer, even though carcinogenic does of course fall in the category of Serious Health Hazard. (I looked up the symbols on the official page of the Health and Safety Executive page of the UK government to be sure.
California Warnings will either state California or Prop 65 in the warning. If a package has hazard pictograms (the symbol surrounded with the red diamond) I would take them as serious warnings.
This is not an issue as this powder is intended for professional use or hardcore hobbyists that should know how to safely manipulate this.
In fact this product has even more warnings than labels on extra-thinly grinded raw pigments sold by any fine-art shop.
sure is great California trained the entire western world to just straight up ignore any warning they see.
@@PainterVierax From what I could see of the lable, it's a bad attempt at avoiding liability by adding a bunch of warnings. Perhaps most importantly, referring to the MSDS. Same with meaningless stuff like 'for professional use only', because any professional would first ask "WTF is in it?". Which is also kinda important if paramedics find you unresponsive with dust around you and an empty pigment packet, because the ER and tox lab would also want to know WTF was in it so they could start an appropriate treatment. It kinda fails badly by not listing the actual ingredients.
Interesting! The Colors change is quite impressive🙂
There are some comments discussing the warning label and dangers of inhaling fine powders, but the flammability warning is equally justified. When packed together, fine powders don't have much of a fire risk unless the material is inherently flammable. However, when the fine powder is airborne and forms a cloud, that cloud will take a flame and produce a fireball very quickly.
I don't understand the phenomenon well enough to explain it, but I suspect it has to do with the mass of the material being burned, the ample supply of air/oxygen between particles, and a resulting chain reaction. The first time I saw this effect was on an episode of "Mythbusters" many years ago; the crew ejected coffee creamer from a large cylinder and then put a flame to it to produce a spectacular fireball.
Awww, Clive's saying what we all think: "California-grade warnings *or* actual real warnings..." Being a native son of the Golden State, I have to admit that the law does smell of insincerity and foolishness. 🥺😥
Amazed you did not combine the glow in the dark pigment and the photochromic pigment in a flower.
It does seem like natural progression.
This could be very interesting in combination with translucent resin pigments. I wonder if you would get color combinations from it.
Like a yellow item that turns orange when exposed to UV light, or some other color combinations.
someone tell jedrek29t about this. Can't wait to see what they can do with colour changing resin
It is so fluffy!
I have some PLA filament with the blue kind in it, and it's a lot of fun to print things that change colors throughout the day with the sun or little bracelets that let people know that they should be wearing sunscreen.
This stuff's also quite fun to draw "artistic shapes" on with a UV laser pointer.
Some of the non-yellow post-it-notes are made with thermochromic pigment (gets lighter with elevated temps and seems totally reversible up to 500F). Off the top of my head, the fuchsia (or maybe you’d call it rhodamine) ones are for sure. I tried looking this up and I can’t find anyone else mentioning it, but since I found it by accident I guess I’m not super surprised.
That's odd.
Oh yay! You saw it! Now you can break the news to the internet and be the guy who did it first. Totally serious, just glad to have someone with an audience share this and not be forever wondering if I should have shared it. Which would require waaay too much from me. Have fun!
I mean, if you want to do it, of course
I got the color change wrong. It goes from hot pink at room temp to kind of a purple at elevated temps
fantastive, i've been looking for something like this for ages.
Best use of this stuff I have seen is to take the bracelet of beads mentioned elsewhere here and, when you slather your kids with factor 50 sun screen, make sure the bracelet is covered as well. Once the beads start showing colour you know it is time to reapply.
I watched a guy on RUclips put this into clear lacquer and spray a full car with it. Good job he has the correct ppe for the job 😬
Fun fact: Photochromic pigment is the skin pigment equivalent found in the population of british isles. It's caused by a rare genetic disorder and the reason for the people turning red immediately when subjected to sunlight.
You can also mix powdered dyes like these into PCL plastic (polymorph/instamorph) by folding/kneading it.
You can then reheat and reuse the same bit of plastic to make a hundred different projects with no extra waste.
PCL is great stuff, far stronger than you would expect and as flexible as nylon. Just don't use it anywhere that gets too hot.
That is sooo cool!! I really want to make buttons and indicators/controls like that. It's obligatory now.
Interesting stuff. Has me thinking about mixing up multiple colors and fill in the mold w/ different ones, kind of how some folks do with a jello mold or similar. Also if you could mix it with clear paints. Either a cloth paint to put on a t-shirt or a non flexible paint for something like a sign / board that shows in the sunlight.
Hee hee. At 0:55 - my skin does the same in sunlight! I'm so Scottish. 😁
💚🐇🐴💚
Ooh, that’s fun!
Random thought: if the colour changing resin takes a while to change colour all the way to the end, if a light sensor was positioned at the furthest end away from the UV LED to notice when it went purple, could it be used as a novelty timer?
As a kid I was jealous of mood rings, now I want to start make rings with this stuff
"california grade warnings" its brilliant.
Reminds me of those hyperglo tshirts from the 80s.. Have a few 3d printer filaments that change in sunlight so probably same pigments in them
You should see if a PCB manufacturer would be game to use colour-changing UV inks for their silkscreen and give them a proprietary blend of powders to use as part of this colour-changing ink so when questioned about authenticity of a product resold online, people can test if it's yours through exposure to UV-A.
Interesting video Clive, got my neural pathways flowing and thinking...'Can I mix this with airbrush paint if it's so fine?' I reckon I know what my next experiment is going to be.
Had me spitting out my tea with the California comment
Dood that is nuts!
Don't worry, Clive. California warnings only apply to California sales. No matter how many things California bans, we can still buy them in the rest of the country.
"California ... dangerous", you pegged that one!
Big Clive, the King of random, excellent.
Rite Big Dude! Being careful just doesn't become you🤣🤣TFS, GB :)
_I don't know if these are California warnings or real warnings._ That made my night.
Known by the state of Cancer to cause California
i've used 'cryptic' pigments before. white, coloured under UV. used i banknotes. nice you can get ones that have a sustained change
To get around the fluorescing cast rose blocking further spread of the light, would light conducting
chopped fibre optic strands, or maybe chopped fibre glass matt added into the resin mix make any
difference to the light conductivity? You are wearing gloves anyway, so your skin would be safe.
Just a thought.
Well it might beat chopped leopard's whiskers in his croissants. 🙄😱😉
I use their Chameleon paints. Absolutely superb at what they do
i have sevreal fine powder pigments for 2 part resin casting. Alumilite has a wonderful line of them.
I've seen someone build a "zen bot", you know a little magnetic ball making patterns in sand. Then he poured in some differently colored sand into the groves made by the ball. Kind of silly since he has to change out the sand then.
But what if you use "activated" photochromic or thermochromic sand to fill the groves instead and fill the rest of the box with "inactive" sand, so the sand is infinitely reusable.
You could just use thermochromic sand and make the magnetic ball so hot that it colors everything it touches. But that won't look as nice as sand poured into the groves and it will smear out because of thermal conduction.
So instead one could use a robot arm or a gantry that pours in photochromic sand that has been activated. Then the lines will stay nice and crisp.
Then if you want to be real fancy about it, you could have a wiper that flattens the sand, excess goes into a hopper, that then blows the sand up into the robot arm with pressurized air or something.
Have it all in a glass box that just draws and wipes away all day without human intervention.
That stuff is pretty cool. I'll search it down for a slow boat from China trip to Texas.
Silicone molds? Casting stuff with resin? We BigCrafsman now? Keep steady craftin', y'all.
I'd still like some UVC stuff to make key chain baubles that indicate exposure warning.
Alright! NOW we can see BigClive coming!
The "California Warning Label" reminded me of a H&S Datasheet for Tesco di-ionised water, says
"Colourless liquid, density 1.00, boiling point 100.0 C wear goggles, apron, protective footwear and respirator, if product gets onto skin or clothing wash off with plenty of water"
4:50 yeah i believe it does block the light when it changes colors. i'm pretty sure it's similar to what they do with those transitions lens glasses that tint in the sun
I’m from California, and to be honest these labels aren’t on very much stuff. They’re on a fair amount of electronics and cheap goods, but not stuff most consumers buy. I bet most California know about these warnings, but don’t see notice them too often.
Hello Clive just to let you know, this reaction is a chemical reaction and eventually it dies off, meaning - you can turn it on and off set amount of times. It wont last forever , every time you change the color it will be less and less intensive in color change until it wont change anymore. I tested this myself, if you leave it for about half a years on the window with lots of sun it will last only few months. And yes be careful those are not nice chemicals to play around with - however you can find there is 3d printer filament that reacts to UV :) but print on lower temp and also it will only last few months in intense sunlight
I actually found a temporary colour change hair dye on eBay that you massage into your hair for the sunshine colour changing effect. The hazards of fashion.
@@bigclivedotcom that is terrifying lmao
Lately iv been putting little secrets in my sculpture stuff, so I've been playing with uv florescent powders and stuff like that, now I see I need to go grab another batch of dangerous powders lol
One I use in the US is SolarColorDust
Interesting to see that the LED in resin works. For a while now i've been wanting to pot a 365nm Chanzon LED (unlike a 395nm near-uv one it doesn't light up purple) in epoxy with some World's Pinkest Pink pigment.
This property of reversible photochromism appears in a few rare minerals, most notably hackmanite and tugtupite, and is termed by mineralogists as "tenebrescence". The best specimens of both minerals with this property appearing almost solely in Afghanistan and Greenland alone. They are the only two naturally occurring materials I am aware of in existence which simultaneously exhibit, phosphorescence, tenebrescence, fluorescence, and thermoluminescence. I know on your last video about these cards someone said the color changing text was synthetic hackmanite, but I really doubt it. This UV detector card and the packet of photochromic poweder almost certainly both contain a microencapsulated spiropyran based organic dye.
First time I've seen these kind of pigments colors, I've just done a ring using 3 glow colors and an RFID tag.
Wonder what happens if you mix a transparent pigment into the resin prior to adding the Chroma powder. Will the change overwhelm the original pigment or just darken it. Im sure it also depends on the color relationship between the trans tint and the chroma........ pink/Magents = Darken? .... Orange/Blue = Black?
I'm sure Ben's worx could make some incredible stuff with these pigments
might be good on a car ..
"officer it couldn't be me, my car is white and you're looking for a Red car"
you da man big clive!
Hmmm, Nano Scale Size I would Assume " Rather Weird and Potentially Scary stuff with some essentailly Diabolical Uses's. cheers for the up-load.
I remember the little hairclips girls would use in the 90s, that also did this.
Thx...looks fun.
03:13 - "Most excellent, indeed. Mwahahaahaha!"
You missed that part.
Definitely interesting.
I bought a couple of packs of this stuff to mix in with my clear printer resin.
Interestingly, mine came directly from China with no warnings at all so thanks for the heads-up :)