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 issue of continuing to scale semiconductor technology, and the related problem of improving chip performance without increasing clock speed. While Intel and also other manufacturers continue to search for long-term in order to this problem, no known next-generation technology is to be able to restart silicon scaling and for coming back to traditional clock speed gains.
Researchers at the California Institute of Technology think might be have a strategy to this problem — one that involves here we are at a earliest pens technology to solve 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 about old radios or possibly Aopen’s AX4B-533 “TubeAmp” motherboard. The systems that Dr. Scherer and his research team are doing are nothing like classic vacuum tubes — according towards team, the structures are roughly 1,000x smaller than a human blood cell, that make them 6–8nm. One problem with modern CPUs simply because suffer from significant numbers of electricity leakage — Scherer’s designs would use leakage current to flip states on purpose, thereby improving efficiency and capabilities.
One root-cause of this principals are that Scherer thinks the microprocessor teams scaling below 10nm will encounter problems. The properties of silicon apparently change during that point, becoming both elastic and emitting light. “It’s a different material, and it gives you this different behavior,” Scherer told the new York Times when.
Can tubes replace transistors?
Dr. Scherer isn’t trying to reinvent the transistor or replace the silicon financial crisis. Boeing is funding his research due to its potential applications in space and aviation technologies, and silicon will obviously function as gold standard for everyone for next several years. It’s still interesting look at the question: Could this kind of fundamentally different technology, shrunk to a microscopic scale, solve using of transistor scaling and performance?
Maybe — but there’s a involving problems to be solved between here right now there. First, there’s the question of manufacturing — will any of us 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 them? Can they built quickly enough to maintain current production rates, and in what way will they integrate into existing products?
These might seem like boring questions over a technology’s fundamental promise, but the boring questions are what ultimately determine whether or not tech in order to market. Many of us talk about Intel not being able to build faster CPUs, it doesn’t mean silicon is the fastest semiconductor ever. It indicates that Intel can’t find a method creating faster chips that’s cost-effective, scaleable, and likely to last multiple product versions.
Miniature vacuum tubes could evolve appropriate major driver of PC performance, especially when they can be manufactured at scale, nevertheless the cost and manufacturing challenges are an enormous roadblock to your different technology establishing itself as a silicon player. Neither carbon nanotubes nor graphene have done so, despite huge initial hype. There’s something satisfying in the concept that a century-old technology end up being adapted and improved relevant that it boosts modern computing, but it’s to be able to take for the better of expensive work to prove it would possibly do subsequently.
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