PIEZOELECTRIC SHEAR FORCE DETECTION - A GEOMETRY AVOIDING CRITICAL TIP TUNING FORK GLUING

Authors
SALVI J CHEVASSUS P MOUFLARD A DAVY S SPAJER M COURJON D HJORT K ROSENGREN L
Citation
J. Salvi et al., PIEZOELECTRIC SHEAR FORCE DETECTION - A GEOMETRY AVOIDING CRITICAL TIP TUNING FORK GLUING, Review of scientific instruments, 69(4), 1998, pp. 1744-1746
Citations number
16
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
Journal title
Review of scientific instruments → ACNP
ISSN journal
00346748
Volume
69
Issue
4
Year of publication
1998
Pages
1744 - 1746
Database
ISI
SICI code
0034-6748(1998)69:4<1744:PSFD-A>2.0.ZU;2-I
Abstract
A technique for controlling the tip-sample distance in near-field opti cal microscopes is presented. It consists of mechanically exciting a f iber tip inserted without any adhesive between the two prongs of a hig h Q-piezoelectric tuning fork. The detection of the shear forces is cl assically achieved by measuring the decrease of the dithering amplitud e when the tip approaches the surface. This simple setup greatly simpl ifies tip replacement and its resonance frequency tuning. (C) 1998 Ame rican Institute of Physics. [S0034-6748(98)01604-9].