Characterisation of the Etching Quality in Micro-Electro-Mechanical Systems by Thermal Transient Methodology

Details Characterisation of the Etching Quality in Micro-Electro-Mechanical Systems by Thermal Transient Methodology Characterisation of the Etching Quality in Micro-Electro-Mechanical Systems by Thermal Transient Methodology

2007-11-21

arxiv.org/abs/0711.3301v1

Dans Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS - DTIP 2006, Stresa, Lago Maggiore : Italie (2006)

Computer Science

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Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions)

Scientific paper

Our paper presents a non-destructive thermal transient measurement method that is able to reveal differences even in the micron size range of MEMS structures. Devices of the same design can have differences in their sacrificial layers as consequence of the differences in their manufacturing processes e.g. different etching times. We have made simulations examining how the etching quality reflects in the thermal behaviour of devices. These simulations predicted change in the thermal behaviour of MEMS structures having differences in their sacrificial layers. The theory was tested with measurements of similar MEMS devices prepared with different etching times. In the measurements we used the T3Ster thermal transient tester equipment. The results show that deviations in the devices, as consequence of the different etching times, result in different temperature elevations and manifest also as shift in time in the relevant temperature transient curves.

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