Direct measurement of periodic electric forces in liquids

B. J. Rodriguez; S. Jesse; K. Seal; A. P. Baddorf; S. V. Kalinin

doi:10.1063/1.2817477

Direct measurement of periodic electric forces in liquids

B. J. Rodriguez, S. Jesse, K. Seal, A. P. Baddorf, S. V. Kalinin

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The electric forces acting on an atomic force microscope tip in solution have been measured using a microelectrochemical cell formed by two periodically biased electrodes. The forces were measured as a function of lift height and bias amplitude and frequency, providing insight into electrostatic interactions in liquids. Real-space mapping of the vertical and lateral components of electrostatic forces acting on the tip from the deflection and torsion of the cantilever is demonstrated. This method enables direct probing of electrostatic and convective forces involved in electrophoretic and dielectroforetic self-assembly and electrical tweezer operation in liquid environments.

Original language	English
Article number	014306
Journal	Journal of Applied Physics
Volume	103
Issue number	1
DOIs	https://doi.org/10.1063/1.2817477
State	Published - 2008

Funding

Research was sponsored by the Division of Materials Sciences and Engineering (B.J.R., S.J., S.V.K.) and the Center for Nanophase Materials Sciences (K.S., A.P.B.), Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC for the Office of Basic Energy Sciences, U.S. Department of Energy.

Funders	Funder number
Center for Nanophase Materials Sciences
U.S. Department of Energy
Basic Energy Sciences
Oak Ridge National Laboratory
Division of Materials Sciences and Engineering

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10.1063/1.2817477

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Direct measurement of periodic electric forces in liquids

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