Dissertation/Thesis Abstract

Thermal Transient Study of Silica Aerogel Insulated Micro-hotplates
by Edpuganti, Koutilya, M.S., University of Louisiana at Lafayette, 2015, 88; 10002455
Abstract (Summary)

We studied the temperature transient behavior of an airpit-insulated micro hotplate (µHP) and aerogel-insulated µHP with different airpit heights and aerogel thicknesses. The µHP insulated by 1.3µm-thick aerogel consumes 26.7mW of power at 82°C with a time constant of 114.5 µsec, while the µHP insulated by 4?µm-thick aerogel consumes 35.6mW of power to provide 220°C with a time constant of 211.6 µsec. At the same time, a 100 µm-deep airpit-insulated ?HP consumes 18mW of power to reach approximately 400°C. The time constant of aerogel does not depend just on material properties but also on the structural design of the micro-heater. The temperature transient response time of µHPs is continued to improve from using air-pited, recessed silica aerogel, to thick-film silica aerogel.

Indexing (document details)
Advisor: Madani, Mohammad R.
Commitee: Fekih, Afef, Pratt, Michael A.
School: University of Louisiana at Lafayette
Department: Electrical Engineering
School Location: United States -- Louisiana
Source: MAI 55/03M(E), Masters Abstracts International
Subjects: Electrical engineering
Keywords: Aerogel, Micro-hotplate, Thermal capacitance, Thermal insulation, Thermal resistance, Thermal transient
Publication Number: 10002455
ISBN: 978-1-339-41964-0
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