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Solutions for the microsensor thermistor equations in the small bias case*

Published online by Cambridge University Press:  14 November 2011

W. Allegretto
Affiliation:
Department of Mathematics, University of Alberta, Edmonton, Alberta, Canada T6G 2G1
H. Xie
Affiliation:
Department of Mathematics, University of Alberta, Edmonton, Alberta, Canada T6G 2G1

Synopsis

The behaviour of a microsensor thermistor is described by a system of nonlinear coupled elliptic equations subject to mixed Dirichlet-Neumann boundary conditions, to be solved on different domains. We employ the Implicit Function Theorem in Banach space to show that the system has a solution for small applied bias. It does not appear that earlier approaches for similar thermistor problems can be employed in this physically important situation. The fact that the problem is cast in a subset of R3 is significant in our presentation.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1993

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References

1Allegretto, W. and Xie, H.. Existence of solutions for the time-dependent thermistor equations. IMA J. Appl. Math. 48 (1992), 271281.CrossRefGoogle Scholar
2Audet, S. and Middlehoek, S.. Silicon Sensors (New York: Academic Press, 1989).Google Scholar
3Chau, K., Allegretto, W. and Ristic, Lj. Thermal modeling of CMOS temperature/flow microsensors. Canad. J. Physics 69 (1991), 212216.CrossRefGoogle Scholar
4Chen, X.. Existence and regularity of solutions of a nonlinear degenerate elliptic system arising from a thermistor problem (preprint).Google Scholar
5Chen, X. and Friedman, A.. The thermistor problem with one-zero conductivity. IMA Preprint Series 793.Google Scholar
6Chen, X. and Friedman, A.. The thermistor problem for conductivity which vanishes at large temperature. IMA Preprint Series 792.Google Scholar
7Cimatti, G.. A bound for the temperature in the thermistor problem. IMA J. Appl. Math. 40 (1988), 1522.CrossRefGoogle Scholar
8Cimatti, G.. The stationary thermistor problem with a current limiting device. Proc. Roy. Soc. Edinburgh Sect. A 116 (1990), 7984.CrossRefGoogle Scholar
9Cimatti, G.. Remark on existence and uniqueness for the thermistor problem under mixed boundary conditions. Quart. Appl. Math. XLVII (1989), 117–21.CrossRefGoogle Scholar
10Cimatti, G. and Prodi, G.. Existence results for a nonlinear elliptic system modelling a temperature dependent electrical resistor. Ann. Mat. 151–152 (1988), 227236.CrossRefGoogle Scholar
11Diesselhorst, H.. Uber das probleme eines elektrisch erwarmter leiters. Ann. Phy. 1 (1900), 312325.CrossRefGoogle Scholar
12Fowler, A. and Howison, S.. Temperature surges in thermistors. In Proceedings of the 3rd European Conference on Mathematics in Industry, eds. Manley, J.et al. pp. 197204Stuttgart: Kluwer Academic Publishers and Teubner, B. G., 1990).Google Scholar
13Gilbarg, D. and Trudinger, N. S.. Elliptic Partial Differential Equations of Second Order, 2nd edn (New York: Springer, 1983).Google Scholar
14Groger, K.. A W1, p-estimate for solutions to mixed boundary value problems for second order elliptic differential equations. Math. Ann. 283 (1989), 679687.CrossRefGoogle Scholar
15Howison, S. D., Rodrigues, J. F. and Shillor, M.. Stationary solutions to the thermistor problem. J. Math. Anal. Appl. (to appear).Google Scholar
16Howison, S.. A note on the thermistor problem in two space dimensions. Quart. Appl. Math. XLVII (1989), 509512.CrossRefGoogle Scholar
17Kamins, T.. Polycrystalline Silicon for Integrated Circuit Applications (Boston: Kluwer Academic Publishing, 1988).CrossRefGoogle Scholar
18Macklen, E. D.. Thermistors (Glasgow: Electrochemical Publications Limited, 1979).Google Scholar
19Muller, R., Howe, R., Senturia, S., Smith, R. and White, R.. Microsensors (New York: IEEE Press, 1991).Google Scholar
20Murthy, M. K. V. and Stampacchia, G.. A variational inequality with mixed boundary conditions. Israel J. Math. 13 (1972), 188224.CrossRefGoogle Scholar
21Parameswaran, M., Robinson, A. M., Ristic, Lj, Chau, K. and Allegretto, W.. A CMOS thermally isolated gas flow sensor. Sensors and Actuators 2 (1990), 1726.Google Scholar
22Selberherr, S.. Analysis and Simulation of Semiconductor Devices (New York: Springer, 1984).CrossRefGoogle Scholar
23Shamir, E.. Regularization of mixed second order elliptic problems. Israel J. Math. 6 (1968), 151168.CrossRefGoogle Scholar
24Shi, P., Shillor, M. and Xu, X.. Existence of a solution to the Stefan problem with Joule';s heating (preprint).Google Scholar
25Stampacchia, G.. Problemi al contorno ellitici, con dati discontinui, dotati di soluzioni hölderiane. Ann. Mat. 52 Series 4 (1960), 137.Google Scholar
26Smoller, J.. Shock Waves and Reaction-Diffusion Equations (New York: Springer, 1982).Google Scholar
27Tenti, G.. Some mathematical aspects of Joule heating in metals. Appl. Math. Notes 11 (1986), 2536.Google Scholar
28Troianiello, G. M.. Elliptic Differential Equations and Obstacle Problems (New York: Plenum Press, 1987).CrossRefGoogle Scholar
29Westbrook, D. R.. The thermistor: a problem in heat and current flow. Numer. Methods Partial Differential Equations 5 (1989), 259273.CrossRefGoogle Scholar
30Xie, H. and Allegretto, W.. Cɑ (Ω) solutions of a class of nonlinear degenerate elliptic systems arising in the thermistor problem. SIAM J. Math. Anal. 22 (1991), 14911499.CrossRefGoogle Scholar
31Xie, H.. L2, u(Ω) estimate to the mixed boundary value problem for second order elliptic equations and its application in the thermistor problem (preprint).Google Scholar
32Young, J. H.. Steady state Joule heating with temperature dependent conductivities. Appl. Sci. Res. 43 (1986), 5565.CrossRefGoogle Scholar