作者: S. Schmid , C. Hierold
DOI: 10.1063/1.3008032
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摘要: In this article, an investigation of the damping mechanisms resonant single- and double-clamped polymer microbeams for a frequency range from 10 kHz to 5 MHz is presented. The suspended structures are made SU-8, epoxy-type photoresist, by means sacrificial layer technique. vibration was measured with laser-Doppler vibrometer in high vacuum at different temperatures atmospheric pressure. influence air rarefied investigated intrinsic were determined (p<0.05 Pa). After excluding variety possible factors, dominant dissipation mechanism single-clamped understood be material maximum quality factors (Q) around 70 20 °C. Quality up 720 20 °C stringlike microbeams, which suggest than loss. It shown that internal due flexure a...