We propose a novel concept for an adaptive vapor chamber using a thermoresponsive polymer coating to enhance heat transfer and reduce local thermal gradients. By coating the wick structures with stimulus-responsive polymer brushes with an upper critical solution temperature (UCST), the hotter surface becomes more wettable than the colder surface. The smaller contact angle at higher temperature generates larger capillary forces and promotes stronger return flow toward the hotspots. In this paper, we present our progress toward developing the adaptive vapor chamber. We have grafted poly(2-(meth-acryloyloxy)ethyl(dimethyl(3-sulfopropyl) ammonium hydroxide) (PMEDSAH) brushes on silica wafers, and the PMEDSAH polymer coating exhibits UCST properties with stable and tunable wettability. We have captured infrared images of the evaporator with steady and transient heating, and developed a thermographic technique that can be used to test the adaptive wick functionality in a vapor chamber.
Skip Nav Destination
ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer
December 18–21, 2009
Shanghai, China
Conference Sponsors:
- Nanotechnology Institute
ISBN:
978-0-7918-4391-8
PROCEEDINGS PAPER
Development of an Adaptive Vapor Chamber With Thermoresponsive Polymer Coating
Xiaodong Zhang,
Xiaodong Zhang
Duke University, Durham, NC
Search for other works by this author on:
Stefan Zauscher,
Stefan Zauscher
Duke University, Durham, NC
Search for other works by this author on:
Chuan-Hua Chen
Chuan-Hua Chen
Duke University, Durham, NC
Search for other works by this author on:
Yuejun Zhao
Duke University, Durham, NC
Tao Chen
Duke University, Durham, NC
Xiaodong Zhang
Duke University, Durham, NC
Stefan Zauscher
Duke University, Durham, NC
Chuan-Hua Chen
Duke University, Durham, NC
Paper No:
MNHMT2009-18276, pp. 395-398; 4 pages
Published Online:
October 26, 2010
Citation
Zhao, Y, Chen, T, Zhang, X, Zauscher, S, & Chen, C. "Development of an Adaptive Vapor Chamber With Thermoresponsive Polymer Coating." Proceedings of the ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3. Shanghai, China. December 18–21, 2009. pp. 395-398. ASME. https://doi.org/10.1115/MNHMT2009-18276
Download citation file:
26
Views
Related Proceedings Papers
Related Articles
Effect of Polymer Coating on Vapor Condensation Heat Transfer
J. Heat Transfer (April,2020)
The Wear of Polymers Sliding on Polymeric Films Deposited on Rough Surfaces
J. of Lubrication Tech (April,1981)
Related Chapters
Chitosan-Based Drug Delivery Systems
Chitosan and Its Derivatives as Promising Drug Delivery Carriers
Gas-Fluidized Beds
Two-Phase Heat Transfer
Surface Analysis and Tools
Tribology of Mechanical Systems: A Guide to Present and Future Technologies