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A novel experimental technique for determining node location in resonant mode cantilevers
Journal article   Peer reviewed

A novel experimental technique for determining node location in resonant mode cantilevers

Blake N. Johnson and Raj Mutharasan
Journal of micromechanics and microengineering, v 21(6), p065027
01 Jun 2011
DOI: https://doi.org/10.1088/0960-1317/21/6/065027
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

Engineering Engineering, Electrical & Electronic Instruments & Instrumentation Nanoscience & Nanotechnology Physical Sciences Physics Physics, Applied Science & Technology Science & Technology - Other Topics Technology
We report on a new technique for measuring transverse mode node locations in cantilever sensors using a simple experimental arrangement. The technique relies on measuring resonant frequency response as liquid immersion depth is varied at a constant rate. When the air-liquid interface traverses a node, resonant frequency change decreases considerably and is discernable by a simple correlation analysis. The accuracy of the approach is verified using uniform cross-section cantilevers, whose node locations of the first three modes were measured and the values were within 5.1% of theory. For further testing of the technique, node locations of non-uniform cross-section cantilevers were measured, and the results compared favorably with three-dimensional (3D) finite element models were within 6.6%.

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10 Record Views
12 citations in Web of Science
10 citations in Scopus

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Web of Science research areas
Engineering, Electrical & Electronic
Instruments & Instrumentation
Nanoscience & Nanotechnology
Physics, Applied
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