Date on Master's Thesis/Doctoral Dissertation
Electrical and Computer Engineering
Walsh, Kevin Michael, 1955-
This thesis is based on work done as part of a bigger project supported by Naval Research Laboratories (NRL). A MOSIS fabricated micro hotplate is simulated using the CAD software CoventorWare. There are three different sized hotplates in one die; viz. small, medium and large. The files designed in L-EDIT, are imported into CoventorWare which is used to build a 3-D model and perform various simulations on the models. A voltage sweep is applied to the hotplate terminals for different values of convection coefficients and the resulting temperature data is gathered. This data is compared with experimental data to obtain the best possible match. The main goal of this work is to obtain a suitable value of convection coefficients that provide a temperature solution which is as close as possible to the experimental data. Two sets of values for the convection coefficients are used, one from previous works and the other set is calculated, based on the hotplate dimensions. It is found that for the small and medium sizes, the error curves are close together for different values of the coefficients while for the large hotplate, the curves are apart. Hence convective heat loss decreases with size with conduction coming into prominence.
Trada, Hiren Vrajlal 1977-, "Thermal analysis of microhotplates using computer aided design and simulation software." (2004). Electronic Theses and Dissertations. Paper 1453.