Silicon active microvalves using buckled membranes for actuation

Popescu, Dan O. and Dascula, Dan C. and Elwenspoek, Miko and Lammerink, Theo (1995) Silicon active microvalves using buckled membranes for actuation. In: Transducers '95 - Eurosensors IX, June 25-29, 1995, Stockholm, Sweden.

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Abstract:	Design considerations and experiments have been made for obtaining a new type of active microvalves using silicon buckled membranes. The properties of the buckled membranes permitting to obtain high deflections and to actuate them more convenient are demonstrated. A thermal actuation using an aluminium ring layer heated with a polysilicon resistor is analysed. The polysilicon and the aluminium ring layers have been deposited in the region of the membrane having the minimum internal stress. The fabrication process consist of photolithography, LPCVD depositions, diffusion, AI sputtering. isotropic, anisotropic etching and anodic bonding. The design and experiments show a convenient low temperature range necessary to actuate the microvalve.
Item Type:	Conference or Workshop Item
Copyright:	© 1995 IEEE
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/17215
Official URL:	http://dx.doi.org/10.1109/SENSOR.1995.717179
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