Could modern, nanoscale vacuum tubes replace transistors?
Public Group active 2 years, 11 months agoAmong the topics we’ve covered multiple times at ExtremeTech is the actual of continuing to scale semiconductor technology, and the related problem of improving chip performance without increasing clock speed. While Intel additional manufacturers still search for long-term in order to this problem, no known next-generation technology is likely to restart silicon scaling and allow for coming back to traditional clock speed gains.
Researchers at the California Institute of Technology think they may have a strategy to this problem — one that involves returning to a very old technology to unravel the problems of existing methods. Vacuum tubes, primarily based Dr. Axel Scherer, may be key to improving transistor performance and lowering power consumption.
Chances are, when you believe vacuum tubes, you think of old radios or possibly Aopen’s AX4B-533 “TubeAmp” system board. The systems that Dr. Scherer and his research team are doing are nothing like classic vacuum tubes — according on the team, the structures are roughly 1,000x smaller than a human blood cell, which could make them 6–8nm. One problem with modern CPUs is simply because they suffer from significant sums of electricity leakage — Scherer’s designs would use leakage current to flip states on purpose, thereby improving efficiency and functionality.
One reason for this studies are that Scherer thinks the microprocessor teams scaling below 10nm will encounter factors. The properties of silicon apparently change during that point, becoming both elastic and emitting light. “It’s a different material, so it gives you this different behavior,” Scherer told the actual York Moments.
Can tubes replace transistors?
Dr. Scherer isn’t trying to reinvent the transistor or replace the silicon budget. Boeing is funding his research due to its potential applications in space and aviation technologies, and silicon will obviously function as the gold standard for everyone for quite a while. It’s still interesting to think about the question: Could this kind of fundamentally different technology, shrunk to a microscopic scale, solve the problems of transistor scaling and performance?
Maybe — but there’s a associated with problems become solved between here presently there. First, there’s the question of manufacturing — can we crank out tens of thousands of vacuum-based processors in per month? What does it cost to build these solutions, switch out manufacturing hardware, and build an ecosystem around all of them with? Can they built quickly enough to maintain current production rates, and in what way will they integrate into existing product lines?
These may look like boring questions compared to a technology’s fundamental promise, however the boring questions are what ultimately determine if or not tech for you to market. When we talk about Intel not being able to build faster CPUs, it doesn’t mean silicon may be the fastest semiconductor ever. It means that Intel can’t choose a method creating faster chips that’s cost-effective, scaleable, and likely to last multiple product several years.
Miniature vacuum tubes could evolve appropriate major driver of PC performance, specially when they can be manufactured at scale, but the cost and manufacturing challenges are an enormous roadblock to any different technology establishing itself as a silicon competing. Neither carbon nanotubes nor graphene have done so, despite huge initial hype. There’s something satisfying in the idea that a century-old technology could possibly be adapted and improved to the point that it boosts modern computing, but it’s going to take an awful lot of expensive work to prove it would possibly do as.
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