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Bifurcation-based mass sensing using piezoelectrically-actuated microcantilevers
APPLIED PHYSICS LETTERS
  • Vijay Kumar, Birck Nanotechnology Center, Purdue University
  • J. William Boley, Purdue University
  • Yushi Yang, Birck Nanotechnology Center, Purdue University
  • Hendrik Ekowaluyo, Birck Nanotechnology Center, Purdue University
  • Jacob K Miller, Birck Nanotechnology Center, Purdue University
  • George T.C. Chiu, Birck Nanotechnology Center, Purdue University
  • Jeff F. Rhoads, Birck Nanotechnology Center, Purdue University
Abstract
In conventional implementations, resonant chemical and biological sensors exploit chemomechanically-induced frequency shifts, which occur in linear systems, for analyte detection. In this letter, an alternative sensing approach, based upon dynamic transitions across saddle-node bifurcations is investigated. This technique not only has the potential to render improved sensor metrics but also to eliminate frequency tracking components from final device implementations. The present work details proof-of-concept experiments on bifurcation-based sensing, which were conducted using selectively functionalized, piezoelectrically-actuated microcantilevers. Preliminary results reveal the proposed sensing technique to be a viable alternative to existing resonant sensing methods. (C) 2011 American Institute of Physics. [doi:10.1063/1.3574920]
Keywords
  • SYSTEMS
Date of this Version
4-11-2011
Citation
DOI: 10.1063/1.3574920
Citation Information
Vijay Kumar, J. William Boley, Yushi Yang, Hendrik Ekowaluyo, et al.. "Bifurcation-based mass sensing using piezoelectrically-actuated microcantilevers" APPLIED PHYSICS LETTERS (2011)
Available at: http://works.bepress.com/geroge_chiu/1/