Could modern, nanoscale vacuum tubes replace transistors?
Public Group active 2 years, 11 months agoAmong the topics we’ve covered too many 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 other manufacturers in order to search for long-term solutions to this problem, no known next-generation technology is to be able to restart silicon scaling as well as for a return to traditional clock speed gains.
Researchers at the California Institute of Technology think they may have a solution to this problem — one that involves returning to a early technology to solve the problems of existing methods. Vacuum tubes, as stated by Dr. Axel Scherer, could key to improving transistor performance and lowering power consumption.
Chances are, when you think 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 working on are nothing beats classic vacuum tubes — according towards team, the structures are roughly 1,000x smaller over a human blood cell, which would make them 6–8nm. One problem with modern CPUs is that they suffer from significant numbers of electricity leakage — Scherer’s designs would use leakage current turnover states on purpose, thereby improving efficiency and functionality.
One reason for this research is that Scherer thinks the microprocessor teams scaling below 10nm will encounter factors. The properties of silicon apparently change at that point, becoming both elastic and emitting light. “It’s a different material, and 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 next several years. It’s still interesting to consider the question: Could this kind of fundamentally different technology, shrunk to a microscopic scale, solve using of transistor scaling and also gratifaction?
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 a 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 products?
These might seem like boring questions compared to a technology’s fundamental promise, however the boring questions are what ultimately assess whether or not tech comes to market. All of us talk about Intel within build faster CPUs, it doesn’t mean silicon could be the fastest semiconductor ever. It indicates that Intel can’t choose a method of building 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, particularly if they can be manufactured at scale, however the cost and manufacturing challenges are an enormous roadblock to the 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 notion that a century-old technology end up being adapted and improved relevant that it boosts modern computing, but it’s going to take for the better of expensive work to prove it does do so.
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