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Design and Characterization of Microelectromechanical System Flow Sensors Using Silicon Nanowires

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Cantilever structures were reported to be used for flow sensing purposes. Herein, we present silicon nanowire (SiNW) based cantilever flow sensor. Five cantilever flow sensors with different depths are modeled and simulated (fluid-structure) with water flow velocity from 50 cm/s to 200 cm/s. SiNW is embedded in the cantilever as piezoresistive transducer at the anchor, and a maximum resistance change of 11.2% is obtained. Based on the results, increasing depth will not only contributes to larger cantilever deformation at fixed flow velocity, but also improves its sensitivity. However when the depth become larger to certain degree, this effect tends to saturate.
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Keywords: FLOW SENSOR; MEMS; SILICON NANOWIRE

Document Type: Short Communication

Publication date: April 1, 2011

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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