| New view solves
semiconductor puzzle
Scientists have
pinned down the arrangement of atoms on the surface of gallium arsenide,
a semiconductor material used for tiny lasers and high-speed
electronics.
References:
LaBella, V.P., et
al. 1999. Atomic structure of the GaAs(001)-(2 x 4) surface
resolved using scanning tunneling microscopy and first-principles
theory. Physical Review Letters 83(Oct. 11):2989.
Further Readings:
Weiss, P. 1998.
Atom tinkerer’s paradise. Science News 154(Oct. 24):268.
Wu, C. 1997. High
vacuum produces ultrapure crystals. Science News 152(Aug.
16):102.
Sources:
Vincent P.
LaBella
University of Arkansas
Department of Physics
Fayetteville, AK 72701
From Science
News, Vol. 156, No. 17, October 23, 1999, p. 271. Copyright © 1999,
Science Service. |