Here is a bit of an experiment for enthusiasts currently playing around with TEG/graphite applications. Take a very fine graphite powder and impregnate it into an insulated material. Run a high voltage through the graphite on the insulator. This will cause channels to form in the graphite that are of the lowest resistance through the surface. Afterward, connect to the non-burned in graphite and the burned channel. The contact points on the now different impedance materials will make a micro-thermocouple(well many of them actually). I have made high voltage speakers in this way with graphite powder and two thin plastic sheets. The graphite powder is in-between the two sheets that are in a frame and causes them to make a vacuum between the sheets. Not particularly difficult to do, just be cautious working with the high voltage. Be smarter than what you are working with. Thanks again Rob!
jamesross
I love your videos. Daily, I look forward to them so much; they are not just 'wild possible theories, ' but rather, you materialize your theories and create practical, usable devices that anyone could replicate. You seem so humble and have so much knowledge.
Thank you for your hard work and good service. I do my best to like all your video's, have already subscribed to both of your channels.
Warm regards from The Netherlands.
Vighnesh.M.Productions
That is the Wild thing ! The Simplicity of this kind of thoughts is what leads US to sustainability for the upcoming years. The more we know, the more peacefull we will Be. Thank you again Sir.
huguesmassin
i just skimmed a paper saying that if you paint 2 graphite strips different widths they will have different seebeck coefficients and can therefore become a thermocouple generator. They used an HB and 6B pencil to draw two lines. Title of the paper:
"Single material thermocouples from graphite traces: Fabricating extremely simple and low cost thermal sensors"
on another note, i wonder if the graphite-painted foils in battery cells can be used as thermocouple junctions. I will give it a try, as i have a lot of junk cells
veganismyname
Hi Rob, great video. Thank you!
I'm happy to have about 3 liters of your "genius" Ink in stock, it's the best paint so far I used.
Yes, I agree, it's a pain to make conductive ink. My home made ink has 5 Ohm/squared.
I like to recommend everyone to watch the old "Rob" videos about conductive ink.
fredcaveman
I'm so glad I still have some of your ink/paint. It's collectible now 😅
TravisTellsTruths
Win, Win, Win situation! Love these videos Rob! Keep them coming!
jamesross
How about using copper pcb or aluminium pcb material and silk screening or using a plotter for printing the graphite paint part. Then take this panel and put the hot joints in the sun and the and the cold joints in the shade. Maybe even using a non conductive black paint coating for the hot joints and the new white cold paint for the cold side. This way you could create a non silicon based solar panel. I think this is worth a shot.
bartronicsecurity
Thank you for sharing. I want to show this video to my child and it looks simple enough that we could test out
townbell
Lovely stuff. I'm wondering if this could be used to generate power from the undesirable heating of photovoltaic cells?
samuelsim
30 years ago someone gave me a 2“ x 2“ thermal electric generator with ceramic plates on each side. I put a boiling pot of water on one side, and the other surface was submerged in the solution of ice and calcium chloride.
I believe I had 5 V at one amp coming out of that TEG
Glowbetraveler
If the lines were painted in circles would it increase voltage? Assuming you would use a small flat surface to bridge the circles of course
nonsensicalnonsense
Great stuff there Rob. Thermo electric generating paint on an Aussie roof, even in winter and bang power. Of course, I have already covered my roof with panels, but I like where this is going mate.
colrodrick
i didnt even start the video and I gave it a like I trust your titles to videos. Too many Youtubers sold out the titles... Thanks! you are one of my fav youtube treasures!!!
takeguess
Nothing to it but to do it! Every drop in the bucket counts. Amazing!
willhibbardii
I remember you doing painted electro/heat with sulphur and metal tape on metal substrates (roofing), how does this differ?
Does 'soldering/brazing' the joint of m-m thermocouples have any good/bad effects. I'm wondering about continuous spot-welding flat strips in order to boost the current aspect, but wondering if a soldered/brazed joint(s) would be ok instead.
Could you get another paint manufacturer to make your paint, under license of course? Selling it with links/leaflets/projects of things you can do with it. Surely schools/colleges science depts would be a good client base. What was the biggest PITA about making your paint?
Thanks for sharing so much.
bikerfirefarter
Will you get more effect if you overlap a much bigger surface. Easy to do with paint
patim
I was trying to use distilled vinegar to copper electroplate the conductive PLA, but it creates copper acetate in the mix and dissolves the PLA. What you end up with is a dust of copper(II) oxide-covered carbon particles. Copper(II) oxide has a high thermoelectric effect.
tbabbittt
Hmmmm, this has given me an idea; I wonder if copper oxide can be made into a paint.
TheBaconWizard
Now we’re talking I’m building a giant thermo electric battery with 500 modules storing hot sand in giant water heaters.
