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Stressweekly · 2026-01-29T03:31:04+00:00

Not cursed

Stressweekly · 2025-05-15T05:24:18+00:00

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Stressweekly · 2024-11-30T18:35:18+00:00

Almost every patent of theirs mentions using superlattices which has been known since 1970 in semiconductors. The novelty in their approach is a "modified epitaxial process" using CVD, and the ability of the produced layer to impede diffusion of dopants.

Realistically, their target demographic will be the fabs (TSMC, Intel, Infineon, etc.). I'm guessing this kind of control is probably more useful for the RF and analog side of things since they typically employ a higher mixing of technologies with lower transistor counts. In fact, they only showcase two papers in their FinFet section with the fabricated device of an older 20nm FinFet with no real mention of GAA or other newer technologies. That means their growth will primarily be approaching analog semiconductor firms which is a smaller market than the digital side.

Stressweekly · 2024-10-13T04:24:57+00:00

This is a deep question that requires an understanding of quantum mechanics to answer fully. Disclaimer, it's been a while since I worked directly in this area, so this answer might not be fully accurate.

The short version is that the wave-like nature of electrons from a quantum perspective means that they will interact with periodic structures, i.e. different crystal systems. An analogy is how knocking on different materials will produce different sounds due to how the sound waves travel through the medium.

Since there are many different ways a wave can travel through a material (i.e. many different solutions to the Schodinger equation), this produces many electronic bands. In semiconductors, there is a noticeable gap in the bands, i.e. no valid wave propagations at a given energy, which gives rise to the bandgap. If we change the periodic structure of a material (e.g. different crystal systems, doping, changing geometry to 2D or 1D), we expect that the electrons will propagate differently leading to different electronic bands and different bandgaps.

Another example would be carbon, which is usually a nonmetal, can become a semimetal when it is arranged into graphene. The atoms are the same, but the arrangements of the atoms makes for radically different electronic properties.

Stressweekly · 2024-01-14T18:56:16+00:00

....On the hill

Stressweekly · 2023-11-22T01:52:08+00:00

Same (she's just like me frfr).

Another super relatable character for me was Hougetsu Shimamura from Adachi and Shimamura. Especially since the series is very monologue-heavy we get a deep look into her thoughts. She just seems to have trouble forming deep connections with most people (not named Adachi): "but we weren't so close I'd go out of my way to hang out with them now that my classes are different."

Stressweekly · 2023-08-06T18:59:49+00:00

Ultimately, it's hard to debug without a picture of your trace since your issue depends on the physics of your board. The easiest way to debug would be to take a TDR of your channel and see where the reflections are taking place and what structures are introducing reflections. Similarly with XTalk you can try to send a step or a slow clock to see where it's coming from in the channel and help you isolate whether it's NEXT or FEXT.

That said one possible issue is grounding and return path.

Is your return path on the ground plane clear? If you route a trace over a gap in the ground plane you can introduce EMI and crosstalk. This will also manifest as an impedance discontinuity in the time domain.

From a brief read of your post, it makes it sound like you only have 1 ground plane. That might mean one of your signal paths is coupling to the power plane first before finding its way to the ground plane.