Disentangling mechanical and mass effects on nanomechanical resonators

GrĂ¼ter, R. R.; Khan, Z.; Paxman, R.; Ndieyira, J. W.; Dueck, B.; Bircher, B. A.; Yang, J. L.; Drechsler, U.; Despont, M.; McKendry, R. A.; Hoogenboom, B. W.
January 2010
Applied Physics Letters;1/11/2010, Vol. 96 Issue 2, p023113
Academic Journal
Micro and nanomechanical resonators are powerful and label-free sensors of analytes in various environments. Their response, however, is a convolution of mass, rigidity, and nanoscale heterogeneity of adsorbates. Here we demonstrate a procedure to disentangle this complex sensor response, to simultaneously measure both mass and elastic properties of nanometer thick samples. This turns an apparent disadvantage of these resonators into a striking and unique asset, enabling them to measure more than mass alone.


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