Abstract
We report a Polydimethylsiloxane (PDMS) foam based sensor for measuring weight. The transmission spectrum of PDMS foam is studied by subjecting it to compression in the direction of the incident light. The attenuation of transmitted light through the PDMS foam is discussed. An apparatus is fabricated which compresses or uncompresses the PDMS foam by loading or unloading weights which varies the intensity of the transmitted light. Observations show no hysteresis and good repeatability over a range of weights from 500 to 2800 g.
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