Carbon-based Nanostructured Surfaces for Enhanced Phase-Change Cooling

posted Jun 14, 2013, 8:46 AM by Timothy Fisher   [ updated Jun 16, 2013, 5:54 AM by Tim Fisher ]

Student: Arun Selvaraj Kousalya

Faculty: Tim Fisher

Sponsor: Air Force Office of Scientific Research

Summary: Phase-change cooling schemes have emerged as a prominent thermal management solution for evolving electronic circuit architectures because of their potential to achieve high heat dissipation rates while maintaining uniform device temperatures. Three types of carbon-based nanostructured surfaces are tested in this work. The initial part of this work focused on enhancing the flow boiling performance of carbon nanotube (CNT)-coated copper surfaces with low-intensity photonic excitation. The oxidation resistance of graphene-coated copper surfaces exposed to forced convection boiling systems was later studied to observe a 65% reduction in oxidation with graphene-coated copper surfaces as opposed to uncoated surfaces. Graphitic petal-decorated carbon nanotubes are currently being investigated as a means of enhancing the flow-boiling performance. A means of altering the wettability of a nanostructured boiling surface by low power plasma treatment is presented as an approach to study the effect of contact angle on boiling performance of a nanostructured surface.

Representative Paper: