TY  - JOUR
AU  - Volokitin, A. I.
AU  - Persson, B. N. J.
TI  - Adsorbate-Induced Enhancement of Electrostatic Noncontact Friction
JO  - Physical review letters
VL  - 94
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-48859
SP  - 086104
PY  - 2005
N1  - Record converted from VDB: 12.11.2012
AB  - We study the noncontact friction between an atomic force microscope tip and a metal substrate in the presence of bias voltage. The friction is due to energy losses in the sample created by the electromagnetic field from the oscillating charges induced on the tip surface by the bias voltage. We show that the friction can be enhanced by many orders of magnitude if the adsorbate layer can support acoustic vibrations. The theory predicts the magnitude and the distance dependence of friction in good agreement with recent puzzling noncontact friction experiment [B. C. Stipe, H. J. Mamin, T. D. Stowe, T. W. Kenny, and D. Rugar, Phys. Rev. Lett. 87, 096801 (2001).]. We demonstrate that even an isolated adsorbate can produce high enough friction to be measured experimentally.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000227386000042
DO  - DOI:10.1103/PhysRevLett.94.086104
UR  - https://juser.fz-juelich.de/record/48859
ER  -