Could modern, nanoscale vacuum tubes replace transistors?
Public Group active 2 years, 11 months agoOne of the several topics we’ve covered many times at ExtremeTech is the difficulty of continuing to scale semiconductor technology, and the attached problem of improving chip performance without increasing clock speed. While Intel additional manufacturers still search for long-term solutions to this problem, no known next-generation technology is expected to restart silicon scaling and for returning to traditional clock speed gains.
Researchers at the California Institute of Technology think might be have a solution to this problem — one that involves in to a early technology to unravel the problems of existing methods. Vacuum tubes, primarily based Dr. Axel Scherer, could key to improving transistor performance and lowering power consumption.
Chances are, when you think vacuum tubes, you think of old radios or possibly Aopen’s AX4B-533 “TubeAmp” mother board. The systems that Dr. Scherer and his research team are doing are in contrast to classic vacuum tubes — according towards team, the structures are roughly 1,000x smaller than a human blood cell, which could make them 6–8nm. Recognize with modern CPUs is simply because they suffer from significant sums of electricity leakage — Scherer’s designs would use leakage current to turnover 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 actual York Times.
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 the gold standard for everyone for quite a while. It’s still interesting to consider the question: Could the fundamentally different technology, shrunk to a microscopic scale, solve using of transistor scaling and satisfaction?
Maybe — but there’s a associated with problems become solved between here right now there. First, there’s the question of manufacturing — can we crank out tens of thousands of vacuum-based processors in thirty day period? 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 brands?
These might seem like boring questions over a technology’s fundamental promise, but the boring questions are what ultimately determine if or not tech for you to market. Many 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 find a method creating faster chips that’s cost-effective, scaleable, and likely to last multiple product versions.
Miniature vacuum tubes could evolve onto a major driver of PC performance, especially when they could be manufactured at scale, however 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 notion that a century-old technology could be adapted and improved with enough force that it boosts modern computing, but it’s to be able to take for the better of expensive work to prove it can do so.
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