Your Search Results

Use this resource - and many more! - in your textbook!

AcademicPub holds over eight million pieces of educational content for you to mix-and-match your way.

Experience the freedom of customizing your course pack with AcademicPub!
Not an educator but still interested in using this content? No problem! Visit our provider's page to contact the publisher and get permission directly.

Optical excitation of micro-mechanical resonators

By: Elwenspoek, M.; Lammerink, T.S.J.; Fluitman, J.H.J.;

1991 / IEEE / 0-87942-641-1

Description

This item was taken from the IEEE Periodical ' Optical excitation of micro-mechanical resonators ' The authors present theoretical and experimental studies on optothermal excitation of bending-mode micromechanical resonators. The theory results in a prediction of induced bending moment (modulus and phase) as a function of the excitation frequency, the geometry of the structure, and material properties. It is shown that decisive roles are played by the absorption length of the material mu , the penetration depth of a thermal wave delta , and the thickness of the resonator. delta is a function of the excitation frequency while the resonance frequency depends on h. The theory results in design rules for optothermal resonators. It is shown that absorbing layers improve the efficiency of the optothermal transduction only in the case of transparent materials. Experiments agree well with theory.<>