Dynamic friction force measurement with the scanning force microscope

Authors
Krotil, HU Weilandt, E Stifter, T Marti, O Hild, S
Citation
Hu. Krotil et al., Dynamic friction force measurement with the scanning force microscope, SURF INT AN, 27(5-6), 1999, pp. 341-347
Citations number
12
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE AND INTERFACE ANALYSIS
ISSN journal
01422421 → ACNP
Volume
27
Issue
5-6
Year of publication
1999
Pages
341 - 347
Database
ISI
SICI code
0142-2421(199905/06)27:5-6<341:DFFMWT>2.0.ZU;2-1
Abstract
The combination of scanning friction force microscopy (SFFM) with lock-in t echniques leads to dynamic scanning friction force microscopy (DSFFM) and p rovides great advantages in friction force studies. In the present work the oretical considerations of DSFFM are proposed to obtain quantitative fricti on force values from quantitative friction force values from qualitative fr iction force contrasts. Amplitude versus amplitude spectra and amplitude ve rsus phase spectra are presented, obtained by measuring the amplitude and t he phase signal of the (bending) scanning force contrasts by a simple metho d and second to determine quantitative static and kinetic friction forces. Two different polymer systems (polymer blend of 75% poly(allylaminehydrochl oride) (PAA) and 25% poly(diallyldimethylammoniumchloride) (PDDAC) and a si licon surface with polyolefine contamination) served as sample systems. Cop yright (C) 1999 John Wiley & Sons, Ltd.