- About Us
- Nano-Social Network
- Nano Consulting
- My Account
Vacuum tubes have been retro for decades. They almost completely disappeared from the electronics scene when consumers exchanged their old cathode ray tube monitors for flat screen TVs. Their replacement - the semiconductor - is generally the cheaper, lighter, more efficient, and easier to manufacture of the two technologies. But vacuum tubes are more robust in high-radiation environments such as outer space. And since electrons travel faster in a vacuum than through a semiconductor, vacuum tubes are an intrinsically better medium for electricity.
An international team of researchers from NASA's Ames Research Center in Moffett Field, Calif., and the National Nanofab Center in Korea have combined the best traits of both technologies by making a tiny version of vacuum tubes that could be incorporated into circuits. Their prototype, a vacuum channel transistor, is just 150 nanometers long and was made using conventional semiconductor fabrication methods. Its small size allows it to operate at fewer than 10 volts, much less than a retro vacuum tube requires; with further work, the device could be made to use about 1 volt, which would make it competitive with modern semiconductor technology.
In a paper accepted to the American Institute of Physics' (AIP) journal Applied Physics Letters, the authors write that such a transistor could be useful for applications in hazardous chemical sensing, noninvasive medical diagnostics, and high-speed telecommunications, as well as in so-called "extreme environment" applications for military and space.
Article: "Vacuum nanoelectronics: back to the future? - gate insulated nanoscale vacuum channel transistor," is accepted to Applied Physics Letters.
Authors: Jin-Woo Han (1), Jae Sub Oh (2), and M. Meyyappan (1).
(1) Center for Nanotechnology, NASA Ames Research Center, Moffett Field, Calif.
(2) National Nanofab Center, South Korea
For more information, please click here
Jennifer Lauren Lee
Copyright © American Institute of PhysicsIf you have a comment, please Contact us.
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
|Related News Press|
News and information
Strength of hair inspires new materials for body armor January 18th, 2017
Self-assembling particles brighten future of LED lighting January 18th, 2017
Infrared instrumentation leader secures exclusive use of Vantablack coating December 5th, 2016
New records set up with 'Screws of Light' November 20th, 2016