Easter Seals UCP North Carolina 3801 Lake Boone Trl SUITE 150, Raleigh 27607 (919) 865-8692 (Phone) Carolina Performance 8300 Health Park SUITE 201, Raleigh 27615 (919) 676-9699 (Phone)
Languages:
English
Jun He, Raleigh NC
Specialties:
Psychiatrist
Address:
8300 Health Park, Raleigh, NC 27615 4220 Apex Hwy, Durham, NC 27713 3801 Lake Boone Trl, Raleigh, NC 27607
Field Controlled Current Modulators Based On Tunable Barrier Strengths
US Patent:
5705824, Jan 6, 1998
Filed:
Jun 30, 1995
Appl. No.:
8/497672
Inventors:
Gerald J. Lafrate - Raleigh NC Jun He - Raleigh NC Mitra Dutta - Tinton Falls NJ Michael A. Stroscio - Durham NC
Assignee:
The United States of America as represented by the Secretary of the Army - Washington DC
International Classification:
H01L 2988, H01L 29775
US Classification:
257 23
Abstract:
A carrier transport media is doped with impurities or includes barrier structures within or on the carrier transport media and a sinusoidally alternating external electric field(s) with frequencies equal to the Bloch frequency divided by an integer is applied to the carrier transport media to alter the effective barriers of the impurities or barrier structures to an arbitrarily large potential compared to the zero field barrier potential. The various impurities or barrier structures are band engineered and deposited, grown or implanted in the carrier transport media and can take any form such as barrier layers in or on the transport media, laterally induced barriers, and impurities or defects in the carrier transport media. The application of time-dependent external fields across a length of nanoscale or mesoscopic structure leads to an effective renominalization of the barrier potential strengths when the frequency of the applied electric field multiplied by an integer is equal to the Bloch frequency. Under these conditions the transmission probability is altered and the current ratio, i. sub. 2 /i. sub.