Viewing profile — brennanpeterson

Well, you are working from all sorts of misguided assumptions about how you convert, the yield, the efficiency, the shared capital, and history. Old gen logic barely exists, and wo…

"If by some fiat I had to restrict all this writing to one sentence, this is the one I would choose: The summit of Mt. Everest is marine limestone." John McPhee from the wonderful …

It would be nice to have portfolios, but systems are broken enough that that becomes hard to see. I suspect one of the reasons for the bias to hiring PHds in fields where it really…

My work laptop will stall on resize constantly, and I suspect it is due to the mess of security and backup software. Windows does have an ecosystem problem. I am also baffled by th…

None for normal.compute, since energy density is still fundamental. But the interesting option is cryogenic computing, which can have zero switching energy, and 10s of GHz clock ra…

Group theory and crystallograpy without either word? I suppose I can look at this as an extension of group theory to glassy and partial.domains, but it doesn't appear to offer much…

I also quite liked https://ocw.mit.edu/courses/res-6-011-the-art-of-insight-in-... Which is, I think, the successor and quite useful.

Variance, data rate/cost, and lithography. You can do lithography small but slow and expensive. But small means you need a stack, which is even more expensive. At small sizes, defe…

I wonder if that is why it worked as opposed to why it sold. At least, as one of the users in that time it seems to me that the itch was the document repository with some features,…

This isn't true. It used to be, as a new fab would appreciably add quantity. At 1M wspm in 2015, a new 100k fab at the most modern node would add effectively 20-30% capacity, and u…

Or The Crossing, which, at least for the first third is his sparest and best writing. At least, I prefer the marriage of the gothic sensibility and poetry with the classic western.…

Not sure on limbs, but for fast bone and tooth repair it works. https://www.nature.com/articles/srep31724

We aren't far at all from on chip combs or pseudo combs, and that will be fine. More for sensors generally, but you can also have your clocks.

Please tell me how to make a water prism to test compressive strength and deformation resistance. Water is an incompressible fluid, that is different. These are well understood ter…

The sram density is a pretty good equivalent. You can arguably do the average of sram and some logic. If you take the square root of that...you pretty much end up with (modulo a li…

Spin in is an interesting tech history. As for cvd low-k, it is mostly how much C is in your silicon, and likewise how you setup the damascene etch stop. Intel was low-ish k in abo…

Probably done with 3 separate litho/etch layers, where they etch and process in groups of 110 or so. Each of those layers can have a cell, so if you have a tlc device at a 100nm pi…

It exists, though I don't know of any free or open versions

But there are great books in this area? https://www.statlearning.com https://www.stat.cmu.edu/~cshalizi/ADAfaEPoV/ There are other fine ones, but these are very good.

Lithography lives in the thin film approximation anyway. Timiosheko is a good reference. There are papers from Barnett or Nix that are very nice, but edges will probably end up a f…

True! I went a little far in the name of 'eli5'. I think it roughly holds that you gain about a factor of 1.5 in routing density by removing the power distribution, so you can rela…

I am not sure where that would come from. There is nothing about dsa that means this. Dsa is one of many patterning assist technologies, just...an old one. Neat, but not 'new'. You…

Half your wires deliver power, half deliver signal. So if you do both on the same side, you need twice the density of wires. If you split the delivery into two parts, you get doubl…

The benefit of X-ray is they go through everything (so you can see metal). The problem is they go through everything, so you have little signal. For metal/bump voids, hard to inspe…

You are correct. You can do mask edits or short runs in some cases beam. Even more interesting is mask level overlay and CD correction using ultrafast absorption based stress field…