Article ID Journal Published Year Pages File Type
736812 Sensors and Actuators A: Physical 2009 5 Pages PDF
Abstract

A simple optical setup combining interferometric and knife-edge methods is proposed for deflection measurements and sensing both out-of-plane and in-plane movements of MEMS and NEMS devices. The setup has 100 pm/√Hz in-plane measurement resolution for 1 μm full-width-half-maximum spot size illumination and 4 pm/√Hz out-of-plane resolution. The sensor offers large dynamic range. Sensor setup can also be used to measure and differentiate combined modes in some cases.

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Physical Sciences and Engineering Chemistry Electrochemistry
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