Is there any good reason to not start building graphene and carbon nanotube chips today?
verdverm•2mo ago
I recall seeing an HN post recently that most graphene products are highly toxic
westurner•2mo ago
Silicosis is a hazard of doped SiO2 semiconductor manufacturing.
The search is on for semiconductor photoresist that doesn't contain PFAS.
Supply constraints on suitable grain sand for Silicon wafers, Copper, and Neon limit margins.
Graphene and Carbon nanotube production from CO2 could be done on-site with one advantage being that then unprocessed graphene transport would be minimized.
The US currently imports a lot of graphite for graphene production.
There are all-graphene and graphene-coated aluminum heat sinks.
Filtered water with graphene in it can be used to make higher strength concrete.
FWIU there are maskless processes for semiconductor fabrication.
FWIU, existing EUV nanolithography processes already work on Silicon Carbide. There are now DUV and XUV lasers for photolithography.
Nanoimprinting would probably work with graphene. (CVD graphene production processes already have reels, similar to R2R reel-to-reel production.)
It looks like laser shocking carbon nanotubes congeals them into layers.
There are all-carbon motor windings and high voltage power cables.
Do incident rates in graphene production justify additional controls?
CO2 to nano- air and water filters and CO2 to chips would avoid a lot of chemicals in semiconductor manufacturing.
I just saw $26/ton for (non-CO2) carbon capture in 2025. Gravel is like $10-$50/ton.
Is graphene more hazardous than silicon for semiconductor manufacturing?
How can health and environmental hazards of graphene and carbon nanotube production be minimized or eliminated entirely?
Is there are sustainable binder or a glass that slowly biodegrades that would work with carbon-based chips?
westurner•2mo ago
Here's a diagram of a solution for these applications to summarize a chat with Gemini 3 pro thinking; "Carbon Chips: Hurdles and a Future for Hypercomputing: A Blueprint for the Integrated Biorefinery, Lignin-Strained Carbon Logic, and the Post-Silicon 'Green Chip' Economy": https://gemini.google.com/share/5a192ff20a31
westurner•2mo ago
verdverm•2mo ago
westurner•2mo ago
The search is on for semiconductor photoresist that doesn't contain PFAS.
Supply constraints on suitable grain sand for Silicon wafers, Copper, and Neon limit margins.
Graphene and Carbon nanotube production from CO2 could be done on-site with one advantage being that then unprocessed graphene transport would be minimized.
The US currently imports a lot of graphite for graphene production.
There are all-graphene and graphene-coated aluminum heat sinks.
Filtered water with graphene in it can be used to make higher strength concrete.
FWIU there are maskless processes for semiconductor fabrication.
FWIU, existing EUV nanolithography processes already work on Silicon Carbide. There are now DUV and XUV lasers for photolithography.
Nanoimprinting would probably work with graphene. (CVD graphene production processes already have reels, similar to R2R reel-to-reel production.)
It looks like laser shocking carbon nanotubes congeals them into layers.
There are all-carbon motor windings and high voltage power cables.
Do incident rates in graphene production justify additional controls?
CO2 to nano- air and water filters and CO2 to chips would avoid a lot of chemicals in semiconductor manufacturing.
I just saw $26/ton for (non-CO2) carbon capture in 2025. Gravel is like $10-$50/ton.
Is graphene more hazardous than silicon for semiconductor manufacturing?
How can health and environmental hazards of graphene and carbon nanotube production be minimized or eliminated entirely?
Is there are sustainable binder or a glass that slowly biodegrades that would work with carbon-based chips?
westurner•2mo ago