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TECHNICAL PAPERS

Effects of Applied Potential on Friction of a Piezoelectric Material

[+] Author and Article Information
Saikumar Mani, Hyungoo Lee, Wayne Hung

Department of Mechanical Engineering, Texas A & M University, College Station, Texas 77840

Ricardo Perez, Zoubeida Ounaies

Department of Aerospace Engineering, Texas A & M University, College Station, Texas 77840

Hong Liang1

Department of Mechanical Engineering, Texas A & M University, College Station, Texas 77840hliang@tamu.edu

1

Corresponding author.

J. Tribol 129(4), 836-840 (May 01, 2007) (5 pages) doi:10.1115/1.2768084 History: Received April 03, 2006; Revised May 01, 2007

Effects of the piezoelectricity of polyvinylidene fluoride (PVDF) on sliding friction against itself are investigated in this research. The piezoelectricity is the response of a piezoelectric material, such as PVDF, to an applied electrical voltage in terms of stress or physical dimension. Such a response is found to influence the sliding-frictional behavior. This research is beneficial in terms of understanding fundamental friction. The applications of this research are in wide areas, such as the design of a microgripper used for surgeries, microassembly, and micromanipulation.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Tactile microgripper, adapted from the design by Kim (8)

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Figure 2

Conformational changes in PVDF (12)

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Figure 3

Tribometer setup

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Figure 4

AFM setup showing the TESE configuration (14)

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Figure 5

Plot of speed of reciprocation against coefficient of friction

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Figure 6

Plot of applied normal force against coefficient of friction

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Figure 7

Plot of coefficient of friction against electric Field for Samples A and B

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Figure 8

Plot of coefficient of friction against electric field for Samples A and C

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Figure 9

AFM probe displacement with applied voltage

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