Quantifying electric field gradient fluctuations over polymers using ultrasensitive cantilevers

Showkat M. Yazdanian, Nikolas Hoepker, Seppe Kuehn, Roger F. Loring, John A. Marohn

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
Pages (from-to)2273-2279
Number of pages7
JournalNano Letters
Volume9
Issue number6
DOIs
StatePublished - Jun 10 2009
Externally publishedYes

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Polymers
Electric fields
gradients
electric fields
polymers
Power spectrum
Polymer films
Vacuum
Thin films
power spectra
Electric potential
Chemical analysis
vacuum
probes
electric potential
Hot Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Quantifying electric field gradient fluctuations over polymers using ultrasensitive cantilevers. / Yazdanian, Showkat M.; Hoepker, Nikolas; Kuehn, Seppe; Loring, Roger F.; Marohn, John A.

In: Nano Letters, Vol. 9, No. 6, 10.06.2009, p. 2273-2279.

Research output: Contribution to journalArticle

Yazdanian, Showkat M. ; Hoepker, Nikolas ; Kuehn, Seppe ; Loring, Roger F. ; Marohn, John A. / Quantifying electric field gradient fluctuations over polymers using ultrasensitive cantilevers. In: Nano Letters. 2009 ; Vol. 9, No. 6. pp. 2273-2279.
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