Image of the Month

April 2007

Azobenzene on Au(111)


Homebuilt Low Temperature Microscope

SPM 1000 Control System

Description :
Manipulated single azobenzene molecule using several different techniques with a low temperature scanning tunneling microscope (STM).

Operating at a temperature of 34K the isolated azobenzene molecules on the Au(111) surface are selectively and reversibly switched by a 1 microsecond long, -3 V pulse. The imaging parameters are -1.25V, 50 pA.

M. Crommie, M. Comstock, J. Cho, A. Kirakosian

University of California, Berkeley, Lawrence Berkeley National Lab