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.
> molybdenum disulfide for n-type transistors and tungsten diselenide for p-type transistors
Isn't this rather unusual?
NegativeK 13 hours ago [-]
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.
avmich 7 hours ago [-]
Isn't it a good lubricant because it's easily split into 2D layers?
RayfromBoston 7 hours ago [-]
I wonder how this compares in speed and capabilities to photonic computers
ConradKilroy 6 hours ago [-]
I was wondering that too!
znpy 3 hours ago [-]
Isn’t tungsten much much more expensive than silicon and harder to work with?
IsTom 3 hours ago [-]
Does its price really matter for amounts used in chips?
Razengan 15 hours ago [-]
A small step towards Sophons
lowwave 14 hours ago [-]
Well with all the sabre-rattling by Kratsios on space time control, Sophons is not that far fetched.
9dev 15 hours ago [-]
Well—I, for one, welcome our new Trisolaran overlords!
yodon 16 hours ago [-]
WTF is up with that illustration at the top of the article?
DavidSJ 15 hours ago [-]
Some attempt to visually represent molybdenum disulfide and tungsten diselenide with the keys of a QWERTY keyboard.
mjmas 11 hours ago [-]
Which if it was done properly would have WSe2 and MoS2 rather than seemingly random keys
close04 4 hours ago [-]
It shows just the symbols of the elements (W, Se, Mo) and the number 2, not the compounds. The "W", "S", "M", and "2" characters are in the correct place on a QWERTY keyboard, and they appended the necessary additional characters to complete the symbols as needed, even if the "e" in Se and "o" in Mo aren't in the correct spot on the layout.
gfody 16 hours ago [-]
someone tries to explain cmos to the graphics dept
adastra22 15 hours ago [-]
To an AI prompt more likely.
bobmcnamara 10 hours ago [-]
If the frame is made of atoms what are the keys and display made out of? Quarks?
a3w 5 hours ago [-]
Yupp, I stopped reading and closed the browser tab when I saw that. Then reconsidered, to find the original source.
ie: https://sam.zeloof.xyz/category/semiconductor/
How high could this technique go?
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.
[1]: https://www.nature.com/articles/s41586-025-08963-7
Modern microprocessor built from complementary carbon nanotube transistors https://www.nature.com/articles/s41586-019-1493-8
It’s confusing to me because moly d is a very common lubricant, even for home uses.