Create a New Forum Admin Login Member Login Contribute to Voyager Search VoyForums Help Desk VoyForums Exchange VoyForums Directory/Categories VoyForums Homepage VoyForums News FAQ - Frequently Asked Questions

[ Show ]

Support VoyForums

[ Shrink ]

VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4 ]

Subject: Scientists make tiniest transistor from carbon Author: Betty [ Next Thread | Previous Thread | Next Message | Previous Message ] Date Posted: 00:34:28 09/06/05 Tue NRI scientists make tiniest transistor San Francisco, Sept 5: Two non-resident Indian scientists have created history by making the world's tiniest transistor entirely from carbon nanotubes. Nanotubes are rolled up sheets of carbon atoms and are more than a thousand times thinner than human hair. The discovery heralds a new era of ultra miniature electronics where standard silicon transistors are replaced with much smaller versions fashioned from carbon nanotubes. The new transistor is a Y-shaped nanotube with two branches that meet a central stem at a junction. Current flowing from one branch to another can be switched on and off by applying a voltage to the third. Such binary logic called "gating" is the basis of nearly all transistors. "The small size and dramatic switching behaviour of these Y-shaped nanotubes makes them candidates for a new class of all-carbon transistor," says Prabhakar Bandaru, a materials scientist at the University of California, San Diego who led the team that included his colleagues Sungho Jin, graduate student Chiara Daraio and physicist Apparao M Rao at Clemson University in South Carolina. Their work published in the September issue of 'Nature Materials' has won instant acclaim from international science community. [ Next Thread | Previous Thread | Next Message | Previous Message ]