Graduation Year

2021

Document Type

Thesis

Degree

M.S.M.S.E.

Degree Name

MS in Materials Science and Engineering (M.S.M.S.E)

Degree Granting Department

Engineering

Major Professor

Venkat Bhethanabotla, Ph.D.

Co-Major Professor

Conrad Lovell, Ph.D.

Committee Member

D. Yogi Goswami, Ph.D.

Keywords

Ceramic Resistors, Heat Pipes, Heat Sink, Isothermalization, Phase-Change Materials

Abstract

Advances in materials science and engineering in the field of thermal transport and dissipation enable the use of higher-performance electronic devices that are smaller and generate more heat. Phase change thermal transport systems such as heat pipes and vapor chambers enable passive dissipation from devices that generate excessive heat without the need for actively pumped cooling systems. Properly designed vapor chamber enabled systems easily exceed the thermal conductivity of manufactured diamond at a small fraction of the cost.[1][2][3] While heat pipe phase change systems are generally one-dimensional with a limited cross section, vapor chambers are generally two-dimensional with a small thickness.Research is needed in the optimization of layered vapor chambers and heat pipes while focusing on the orientations and sizes, fusing methods, heat sink materials and topographies, and the coatings and anodizations to maximize emissivity for an effective passive thermal management system. This research focused on one-square-inch-scale devices and tested optimized systems for maximum continuous and short-pulse power dissipations while limiting the system weight and size to maximize potential applications.

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