Quantifying electric field gradient fluctuations over polymers using ultrasensitive cantilevers

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

doi:10.1021/nl9004332

Quantifying electric field gradient fluctuations over polymers using ultrasensitive cantilevers

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

Physics

Research output: Contribution to journal › Article

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 language	English (US)
Pages (from-to)	2273-2279
Number of pages	7
Journal	Nano letters
Volume	9
Issue number	6
DOIs	https://doi.org/10.1021/nl9004332
State	Published - Jun 10 2009

ASJC Scopus subject areas

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

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10.1021/nl9004332

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Yazdanian, S. M., Hoepker, N., Kuehn, S., Loring, R. F., & Marohn, J. A. (2009). Quantifying electric field gradient fluctuations over polymers using ultrasensitive cantilevers. Nano letters, 9(6), 2273-2279. https://doi.org/10.1021/nl9004332

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