5 ms·
It will be also at least 100x times (physically) larger, because optical wavelength is ~1000nm vs 10nm of electronic gate size. So much for personal devices.
by EVa5I7bHFq9mnYK 4y ago
It will be also at least 100x times (physically) larger, because optical wavelength is ~1000nm vs 10nm of electronic gate size. So much for personal devices.
- ben_w 4y agoTrue but I think the difference is smaller than one might expect from pure element size. IIRC one reason we don't already have fully 3D chips is because of the heat dissipation. Reducing 2400 W to 24 W means the heat is much more tractable, which means it can be closer to volumetric than planar. Consider a 1cm*1cm*1mm chip; with 1μ^3 elements, 1e11 per chip; with (10nm)^3 elements limited to one layer because of heat, 1e12. Yes this is still a factor of x10, and chips are a few layers because while heat is a problem it's not a total blocker, but it's still much less than the 100^3 ratio a simple scale-up would result in.
- EVa5I7bHFq9mnYK 4y agoMaybe, but then we need to make sure light does not seep into neighboring cells, will need metal shields for that, and then heat will dissipate ... maybe they could solve this in the future.
- rajnathani 4y agoPhysics noob here. But wouldn't it be possible for light to travel through a tube smaller than its wavelength? Here is something I found via a Google search: https://www.quora.com/Can-a-given-color-of-light-pass-through-a-hole-with-a-diameter-smaller-than-the-wavelength-of-the-light https://www.quora.com/Can-a-given-color-of-light-pass-throug...
- EVa5I7bHFq9mnYK 4y agoWhat will happen, such a thin tube will not be able to confine the electromagnetic wave within its boundary, so most of the wave's field will propagate outside of the tube and will quickly diffract on any bumps it encounters.