Anomalous resonant frequency changes in piezoelectric microcantilevers by monolayer formation of AU films

Title
Anomalous resonant frequency changes in piezoelectric microcantilevers by monolayer formation of AU films
Authors
이정훈황교선윤대성김형석송승호강지윤김태송
Keywords
Microcantilever; Resonant frequency; Nanomechanics; Surface stress
Issue Date
2011-10
Publisher
Applied physics letters
Citation
VOL 99, NO 14, 143701-1-143701-3
Abstract
Although the resonant frequency of a microcantilever has been reported to be changed by surface stress and/or flexural rigidity, the reasons still remained unclear. Here, we present an observation of anomalous resonant frequency change with positive values at 3.25 Å thickness of Au, where it represents the monolayer formation of Au films. This result illustrates the surface stress-dependence of the resonant frequency. The thickness at where the resonant frequency shift would become zero through the compensation of the mass, and the surface stress is expected to be approximately three monolayers (9.7 Å).
URI
http://pubs.kist.re.kr/handle/201004/40412
ISSN
0003-6951
Appears in Collections:
KIST Publication > Article
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