Hacker News Reader

tiazumdoveon Parametron: 50s Japanese computer that uses neither transistors nor vacuum tubes

The quantum flux parametron is a really fascinating design and I always wondered why no one talks about it. You can get to GHz range easily and computing will be adiabatic. Its based on Josephson-junctions so you need to provide very low temperatures. I always thought it was a more promising next gen compute technology than the current quantum computers. Especially when you get to write your own SQUIDs in a SEM. Its like two long rectangles with pads at the end+thin insulator on top+two wires for the contacts for a SQUID sandwich and suddenly you can do complex quantum circuits.

tiazumdoveon An Interesting Fourier Transform – 1/f Noise (2007)

Low frequencies are studied quite extensively, especially the mHz-10Hz region for noise characterization of solid state materials. 1/f is quite well studied depending on your field. In semiconductor physics, for example, one possible explanation is electrons trapped in defects or on charged islands and then slowly trickling down. Of course this explanation cannot be used in other fields where 1/f noise shows up as well. The problem is that no model gives a satisfying answer as to why it occurs therefore its unexplained. Lack of model doesn't mean that you can't engineer your way around 1/f noise for example the chopper amp works so well because it shifts away towards frequencies above the 1/f cutoff.

tiazumdoveon Tiny QR code achieved using electron microscope technology

Its a scaling problem. You can do a lot of cool things with fib/ebip etc. but the process itself is very slow and requires patience unless you want to destroy your structure via codeposits or other side effects. Kinda like the AI field back in the 80s the hardware still isn't there to really make use of the ideas.

tiazumdoveon A Guide to Magnetizing N48 Magnets in Ansys Maxwell

I really wish AI could help with learning open source FEM software so far having grok or gemini write elmer/fenics code has been a very bumpy ride my only saving grace is the fact that I can ask my colleagues for guidance and have them provide a working base to expand from. It would do wonders for the hobbyists scientists as well I can't count the times I had a idea for a product but it failed because I couldn't simulate the problem to see if it could work out.