Journal ArticleDOI
Laser vibrometry and impedance characterization of piezoelectric microcantilevers
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TLDR
In this article, the frequency response of self-actuating cantilevers, extended to high-order modes, is analyzed using a mixed experimental scheme, based on both impedance and laser Doppler interferometry measurements, performed with an impedance analyser and a vibrometer.Abstract:
This paper gives a precise insight into the frequency response of self-actuating cantilevers, extended to high-order modes An original approach is presented, based on a mixed experimental scheme regarding both impedance and laser Doppler interferometry measurements, performed with an impedance analyser and a vibrometer, respectively, and supported by some computational analysis as well The experimental results obtained by the two different techniques agree reasonably well, as for the location of the resonances in the spectrum is concerned However, certain particular modes, torsionally shaped and detected by the vibrometer, show no impedance change due to symmetry reasons A computational model has been successfully employed and utilized to shed some light on this phenomenon The model demonstrates that the induced reaction charge redistribution cancels out only for those particular torsional modes featuring an anti-symmetrical nature; as a consequence, no impedance change is to be expected in the resonances This explanation perfectly fits the impedance measurements carried out, including the missing torsional modesCorrections were made to this article on 10 April 2007 The greyscale figures were replaced with colour versionsread more
Citations
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Journal ArticleDOI
Biosensing using dynamic-mode cantilever sensors: a review.
Blake N. Johnson,Raj Mutharasan +1 more
TL;DR: Current progress on the use of dynamic-mode cantilever sensors for biosensing applications is critically reviewed, including fluid-structure interaction and its dependence on the Reynolds number for Newtonian fluids.
Journal ArticleDOI
Modal optimization and filtering in piezoelectric microplate resonators
José Luis Sánchez-Rojas,J. Hernando,Alberto Donoso,José C. Bellido,Tomas Manzaneque,Abdallah Ababneh,Helmut Seidel,Ulrich Schmid +7 more
TL;DR: In this article, a numerical finite element procedure, which considers the effective surface electrode covering the piezoelectric film as a binary function on each element, has been implemented to tailor the modal response of micro-resonators.
Journal ArticleDOI
Medium damping influences on the resonant frequency and quality factor of piezoelectric circular microdiaphragm sensors
TL;DR: In this article, the authors investigated medium damping influences on the resonant frequency and quality factor of piezoelectric circular microdiaphragm sensors (PCMSs).
Journal ArticleDOI
Investigation of residual stress and its effects on the vibrational characteristics of piezoelectric-based multilayered microdiaphragms
TL;DR: In this article, the residual stress influences on the vibrational behavior of piezoelectric circular micro-diaphragm-based biosensors are investigated theoretically and experimentally.
Journal ArticleDOI
Piezoelectric circular microdiaphragm based pressure sensors
TL;DR: In this paper, pressure influences on the vibration characteristics of piezoelectric circular micro-diaphragm based pressure sensors are investigated theoretically and experimentally, and it is demonstrated that only Bessel function of zero order, m ǫ = 0, participates in the vibration modes of the micro-daphragms symmetrically loaded by pressure.
References
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Journal ArticleDOI
Cantilever transducers as a platform for chemical and biological sensors
TL;DR: In this article, the authors discuss sensors with transducers in a form of cantilevers, which are especially attractive as transducers for chemical and biological sensors, and provide a brief analysis of historical predecessors of the modern cantilever sensors.
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Cantilever-based biosensors
TL;DR: This review provides a general introduction into the theory of cantilever sensors, including practical design concepts, examples for liquid-phase sensing with particular emphasis on biological applications, and a discussion of future prospects.
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Enhanced functionality of cantilever based mass sensors using higher modes
TL;DR: In this article, a single gold particle at different locations along the length axis on a cantilever based mass sensor was placed on the sensor to investigate the effect of mass position on the mass responsivity and compared the results to simulations.
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Effect of length, width, and mode on the mass detection sensitivity of piezoelectric unimorph cantilevers
TL;DR: In this paper, the resonance frequency change of a piezoelectric unimorph cantilever due to the mass loaded at the tip of the cantilevers was investigated both experimentally and theoretically.
Journal ArticleDOI
Nanowatt chemical vapor detection with a self-sensing, piezoelectric microcantilever array
J. D. Adams,G. Parrott,C. A. Bauer,T. Sant,L. Manning,M. Jones,B. Rogers,D. McCorkle,T. L. Ferrell +8 more
TL;DR: In this article, the authors demonstrate a microcantilever chemical detection platform based on an array of piezoelectric microCantilevers, where the sensor-element array power consumption is measured in nanowatts, with impedance of the order of megohms.