Ontology highlight
ABSTRACT:
SUBMITTER: Yazdanian SM
PROVIDER: S-EPMC2838734 | biostudies-literature | 2009 Jun
REPOSITORIES: biostudies-literature
Nano letters 20090601 6
An ultrasensitive cantilever, oscillating parallel to a surface in vacuum, is used to probe weak thermal electric field gradient fluctuations over thin polymer films. We measure the power spectrum of cantilever frequency fluctuations as a function of cantilever height and voltage over polymers of various compositions and thicknesses. The data are well described by a linear-response theory that calculates stochastic electric fields arising from thermally driven dielectric fluctuations. ...[more]