Post #2244285

2023-04-07 06:50 UTC

@tubetime@mastodon.social the Vacuum Transistor allows fabrication of chip-scale vacuum tubes on normal CMOS process. These devices switch in the terrahertz range and require neither a heated filament nor a vacuum, since the source-to-drain distance is shorter than the mean free path (which means electrons won't hit any other atoms along the way): https://spectrum.ieee.org/introducing-the-vacuum-transistor-a-device-made-of-nothing

Replies (10)

@gerbrand@fosstodon.org 2023-04-07 11:27

@th@social.v.st @tubetime@mastodon.social really spectacular development, vacuum tubes on the scale of integrated circuits. Hope we'll some applications in the future soon!

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@48kRAM@oldbytes.space 2023-04-07 12:36

@th@social.v.st @tubetime@mastodon.social @DavidBFox@mastodon.gamedev.place Thimbleweed Park was right!! Tubes really are the future. 🤣🤣

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@wilmhit@social.handholding.io 2023-04-07 15:06

@th@social.v.st @tubetime@mastodon.social I wonder if vacuum tube amps will make a comeback

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@pro@mu.zaitcev.nu 2023-04-07 19:29

@th@social.v.st @tubetime@mastodon.social The article from 2014. I suppose it's a little younger than promises of energy from nuclear fusion.

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@benjohn@noparticular.place 2023-04-07 21:14

@th@social.v.st @tubetime@mastodon.social @tubetime@mastodon.social thjnk this will interest you!

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@trollball@mstdn.social 2023-04-07 23:44

@th@social.v.st @tubetime@mastodon.social The article is from ~10 years ago. I did a search after reading and it seems like these two scientists at Ames are doing most of the publishing on the subject. Fascinating stuff, especially for TeraHertz radios. Would love to see this commercialized. Side note: at my first job, we used vacuum tube RF supplies in plasma etchers, to make 0.9 um CMOS. Metal can triodes.

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@daveirving@aus.social 2023-04-08 00:20

@th@social.v.st @tubetime@mastodon.social Waiting for the first guitar amplifier on a chip.

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@madrabbit@chaos.social 2023-04-08 18:40

@th@social.v.st I feel like @North@chaos.social has opinions about this https://social.v.st/@th/110156201777543106

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@JamesAkers@fimidi.com 2023-04-09 13:34

@th@social.v.st Finally that warm tube sound in a solid state form factor! @tubetime@mastodon.social @th@social.v.st

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@stepheneb@ruby.social 2023-04-11 16:47

@th@social.v.st @tubetime@mastodon.social an open access review article from 2023: "Review of Nanoscale Vacuum Devices" https://www.mdpi.com/2079-9292/12/4/802

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