I’ve gotten resistances as low as 10 ohms with some of the settings so far. My only problem is the material is very fragile, and probing it breaks it or flakes it off most of the time. I think using thicker polyimide might produce better results.
Okay, help out someone who is interested but somewhat ignorant on this. How do you know you made graphene? Just the impedance, or is there some other test?
Right now, just the impedance. If I can get some funding at work, I might have some other tests I can run. I’m following the process from this paper:
They used a universal CO2 laser, 4.8W. But they didn’t say what there other setting were. Most of the paper was about doping the graphene to make a supercapacitor and its electrical properties afterward.
Yes, I am very excited by this technology. I posted this earlier. I hope to do some experiments as well when I get caught up with contractual obligations.
Oh, better article. It focus’s on making the LIG instead of turning it into a capacitor. Looks like I’m hitting the right resistance values.
Edit: From the article and the video’s I’ve seen, I think the sheet I’m using is too thin. They use a 5mil thick sheet, I am using a 1mil thick tape with 1mil of adhesive on it. I’ll need to get some thicker stuff.
Find ways to introduce thiophene, selenophene, siloles, and phospholes into the mix for a greater range of properties. Avoid the toxic arsoles. I just realized that last sentence was good life advice as well. Lol
What resistance do you get? You could simply be making graphite by burning plastic with carbon in it. How do you know it is graphene?
E.g. epoxy PCB material becomes conductive when it gets too hot and can create self sustaining fires while the power is applied despite being UL rated V0, i.e. self extinguishing.
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