Improved design methodology for the development of electrically actuated MEMS structures

Prasad, AVSS and Venkatesh, KP and Pratap, Rudra and Bhat, Navakanta (2014) Improved design methodology for the development of electrically actuated MEMS structures. In: 27th International Conference on VLSI Design / 13th International Conference on Embedded Systems (VLSID), JAN 05-09, 2014, Mumbai, INDIA, pp. 499-503.

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Abstract

A comprehensive design flow is proposed for the design of Micro Electro Mechanical Systems that are fabricated using SOIMUMPs process. Many of the designers typically do not model the temperature dependency of electrical conductivity, thermal conductivity and convection coefficient, as it is very cumbersome to create/incorporate the same in the existing FEM simulators. Capturing these dependencies is very critical particularly for structures that are electrically actuated. Lookup tables that capture the temperature dependency of electrical conductivity, thermal conductivity and convection coefficient are created. These look up tables are taken as inputs for a commercially available FEM simulator to model the semiconductor behavior. It is demonstrated that when temperature dependency for all the above mentioned parameters is not captured, then the error in estimation of the maximum temperature (for a given structure) could be as high as 30%. Error in the estimated resistance value under the same conditions is as high as 40%. When temperature dependency of the above mentioned parameters is considered then error w.r.t the measured values is less than 5%. It is evident that error in temperature estimates leads to erroneous results from mechanical simulations as well.

Item Type:	Conference Proceedings
Series.:	International Conference on VLSI Design
Publisher:	IEEE
Additional Information:	27th International Conference on VLSI Design / 13th International Conference on Embedded Systems (VLSID), Mumbai, INDIA, JAN 05-09, 2014
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering Division of Mechanical Sciences > Mechanical Engineering Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	21 Apr 2015 07:35
Last Modified:	21 Apr 2015 07:35
URI:	http://eprints.iisc.ac.in/id/eprint/51336

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