Mark F. Coughlin, Dimitrije Stamenovic, and Johannes G. Smits
ABSTRACT The dynamic behavior of a bimorph clamped at one end and constrained by a linear spring at the other end was studied. The fundamental resonance frequency of the bimorph increased by an amount related to the spring stiffness when compared to the case where the end was free. Therefore, a cantilever bimorph provides a technique to assess the stiffness of a material by a simple measurement of the resonant frequency. Since the bimorph behavior is determined in part by its geometry, the device can be designed for mechanical measurement of microscopic systems such as living cells.
1997 IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 44:730-732
© 1997 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved.