https://arstechnica.com/science/2019/08/16-bit-risc-v-proces...
Modern microprocessor built from complementary carbon nanotube transistors https://www.nature.com/articles/s41586-019-1493-8
First 2D, non-silicon computer developed
11–20 of 32 posts
Re: First 2D, non-silicon computer developed
#12> molybdenum disulfide for n-type transistors and tungsten diselenide for p-type transistors Isn't this rather unusual?
Yes? But it’s been in research for a decade or two, based on a quick search.
It’s confusing to me because moly d is a very common lubricant, even for home uses.
Re: First 2D, non-silicon computer developed
#13WTF is up with that illustration at the top of the article?
AI but it's kinda cool. Computers books in the old days used to have crazy representations of computers and all kinds of stuff. I don't mind this one.
Re: First 2D, non-silicon computer developed
#14Re: First 2D, non-silicon computer developed
#15WTF is up with that illustration at the top of the article?
If the frame is made of atoms what are the keys and display made out of? Quarks?
Re: First 2D, non-silicon computer developed
#16> at frequencies up to 25 kilohertz How high could this technique go?
From the abstract[1]:
This enabled circuit operation below 3 V with an operating frequency of up to 25 kHz, which was constrained by parasitic capacitances
I would guess process improvements would help a lot towards lowering those parasitics. So I wouldn't take this initial attempt as a guide for ultimate speed.
Since this is 2D materials, a capacitor is a dielectric sandwiched by two conductors and capacitance scales linearly with area, I would assume just scaling things down would help immensely with parasitic capacitance. Changing materials or process could also change the dielectric constant which also affects the capacitance linearly.
Paper is sadly not open access, so I can't check if they mention this or have done some theoretical peak calculations or something. Would indeed be interesting to know.
Re: First 2D, non-silicon computer developed
#17I wonder how this compares in speed and capabilities to photonic computers
Re: First 2D, non-silicon computer developed
#18> molybdenum disulfide for n-type transistors and tungsten diselenide for p-type transistors Isn't this rather unusual?
Yes? But it’s been in research for a decade or two, based on a quick search. It’s confusing to me because moly d is a very common lubricant, even for home uses.
Isn't it a good lubricant because it's easily split into 2D layers?
Re: First 2D, non-silicon computer developed
#19I wonder how this compares in speed and capabilities to photonic computers
I was wondering that too!
Re: First 2D, non-silicon computer developed
#20WTF is up with that illustration at the top of the article?
Yupp, I stopped reading and closed the browser tab when I saw that. Then reconsidered, to find the original source.