(情報科学)技術的特異点と科学･技術等 1 (ナノテク) [転載禁止]©2ch.net (840ﾚｽ)
(情報科学)技術的特異点と科学･技術等 1 (ナノテク) [転載禁止]©2ch.net http://rio2016.5ch.net/test/read.cgi/future/1427220599/
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297: オーバーテクナナシー [] 2016/05/10(火) 04:22:10.65 ID:7ttvNwD8 IBMはグラフェンでプロセッサを制作、今のところアナログCPU（デジタルでない）に限定。 デジタルCPUよりも機械学習や脳シミュレーションに適合する可能性もあるが、計算効率は悪くなる。 Graphene Flakes Make Laser Neuron Superfast http://spectrum.ieee.org/nanoclast/semiconductors/optoelectronics/graphene-flakes-make-laser-neurochip-superfastb 「Computation is based on the spatial and temporal positions of the pulses. “This is sort of the fundamental way neurons communicate with other neurons,” he says.」 http://rio2016.5ch.net/test/read.cgi/future/1427220599/297
298: オーバーテクナナシー [] 2016/05/10(火) 04:28:36.31 ID:7ttvNwD8 Cooling graphene-based film close to pilot-scale production http://phys.org/news/2016-04-cooling-graphene-based-pilot-scale-production.html グラフェンで100GHzのプロセッサを制作可能。 http://www.nanosmiths.in/applications-of-graphene/ 「Since Graphene is widely known for its high carrier mobility and low noise features, it is highly recommended as a field-effect transistor. A Graphene-based integrated circuit can handle frequencies up to 10 GHz. The transistors printed on flexible plastic can operate at 25 gigahertz. A simple 2-inch of Graphene sheet can establish a processor using 100 GHz transistors.」 http://rio2016.5ch.net/test/read.cgi/future/1427220599/298
299: オーバーテクナナシー [] 2016/05/10(火) 05:07:26.63 ID:7ttvNwD8 グラフェンで100 GHzプロセッサ制作のソース Fast Flexible Transistors with a Nanotrench Structure http://www.nature.com/articles/srep24771 Roll-to-Roll Flexible Electronics to Hit 100GHZ? http://www.eetimes.com/document.asp?doc_id=1329519 「According to their simulations, their manufacturing strategy could yield 100 GHz-capable thin flexible RF transistors to be manufactured at low cost and low temperature on large rolls of PET.」 「To put things in perspective, the smallest channel length of flexible transistors made on plastic substrates using the semiconductor nanomembranes is about 1 μm, report the researchers, an order of magnitude larger than their proposed design.」 Graphene Patterned at Room Temp http://www.eetimes.com/document.asp?doc_id=1329601 http://rio2016.5ch.net/test/read.cgi/future/1427220599/299
300: オーバーテクナナシー [] 2016/05/10(火) 05:08:03.61 ID:7ttvNwD8 グラフェンの参考 http://www.slideshare.net/madhukasturi92/graphene-the-world-of-future-61142639 >>491 夜分にどうも。 >周波数あがっても複雑なデータ処理をさせると規模が大きくなって >局所熱の熱密度が上がり放熱しきれないってことだよ グラフェンの特徴は熱効率だと思うのだが、熱効率とプロセッサについてのソースが見つからない。 類似した素材で熱効率で（おそらく）劣るはずのCNTだと6倍の熱効率。 This carbon nanotube heatsink is six times more thermally conductive, could trigger a revolution in CPU clock speeds http://www.extremetech.com/extreme/175457-this-carbon-nanotube-heatsink-is-six-times-more-thermally-conductive-could-trigger-a-revolution-in-cpu-clock-speeds 「Moving heat more efficiently into the heatsink would reduce CPU core temps and allow for higher frequency operation or longer periods at Turbo Boost clocks as opposed to being stuck at base clock. As it becomes more difficult to push CPU advances through silicon technology improvements, ancillary methods of improving the thermal conductivity of the entire system will become increasingly important.」 http://rio2016.5ch.net/test/read.cgi/future/1427220599/300
301: オーバーテクナナシー [] 2016/05/10(火) 05:40:06.03 ID:7ttvNwD8 1次ソースではないが、グラフェンによるプロセッサのクロックで 1THzは目標数値のようだね。 The Idea Of A 1000 GHz Processor http://www.aerogelgraphene.com/graphene-processor-2/ fabricated a transistor that operates at 38GHz, but note their simulations show the device could operate at 110GHz. http://www.newelectronics.co.uk/electronics-news/high-speed-transistor-suits-roll-to-roll-production/118337/ 「“We don't want to make them the way the semiconductor industry does now. Our step, which is most critical for roll-to-roll printing, is ready.”」 読んだかぎりではプロセスにも特に問題があるわけではなさそうだ。 グラフェン、CNTは、近い将来にクロック数を飛躍的に向上させる可能性は ありそうだ。 http://rio2016.5ch.net/test/read.cgi/future/1427220599/301
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