Published in:
Applied Physics Letters 88,25 (2006) 2216889;
Link to original published article:
http://dx.doi.org/10.1063/1.2216889
Abstract
We use Anderson or vibration localization in coupled microcantilevers as an extremely sensitive method to detect the added mass of a target analyte. We focus on the resonance frequencies and eigenstates of two nearly identical coupled gold-foil microcantilevers. Theoretical and experimental results indicate that the relative changes in the eigenstates due to the added mass can be orders of magnitude greater than the relative changes in resonance frequencies. Moreover this sensing paradigm possesses intrinsic common mode rejection characteristics thus providing an alternate way to achieve ultrasensitive mass detection under ambient conditions. (c) 2006 American Institute of Physics.
Keywords
resonance-frequency;; eigenvalue loci;; cantilever;; vibrations;; array
Date of this Version
January 2006