Surface Micromachining of Polyureasilazane Based Ceramic-MEMS using SU-8 Micromolds

We describe a novel surface micromachining process for the fabrication of ceramic-type MEMS devices, such as free-standing cantilevers, that is based on the use of high-aspect ratio micromolds of SU8 and aluminum as sacrificial layer. 250μm-high and 100-1000μm-wide molds were used to confine a liquid precursor of SiC/Si3N4 based ceramics on the sacrificial layer that enables the detachment of the green body before the pyrolysis step at 1000°C. The final ceramic cantilever has dimensions ranging from 100-500um x 1-2mm x 50um and a smooth surface. Details of the processing, structural and material characterization such as Dynamic Rheological and Thermogravimetric Analysis under UV will be presented and compared to those found in the literature.


Published in:
Advances in Science and Technology, 45, 1293-1298
Presented at:
CIMTEC 2006 (11th International Conferences on Modern Materials and Technologies), Sicily, Italy , 4-9 June, 2006
Year:
2006
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2007-03-15, last modified 2018-03-17

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