2026-09-22T13:11:20Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/24118 2023-07-10 col_2142_14787 col_2142_5131 com_2142_9630 com_2142_234 com_2142_5130

Sinha, Sanjiv Tian, Hongxiang 2011-05-25T15:03:49Z 2011-05-25T15:03:49Z 2011-05-25T15:03:49Z 2011-05 Capacitive thermal management in electronics requires an enhancement in the volumetric storage density of compatible materials to approximately 1 GJ/m3. We investigate potential enhancement in sensible storage density arising from size e ects in thin polymer lms. We design and fabricate a micro-calorimeter to measure the volumetric heat capacity of nanometer scale thin uorocarbon polymer lms. The storage density increases approximately three times as the lm thickness decreases from 27 nm to 12 nm. Using the Debye theory of phonons, we relate this behavior to an increase in the Gr uneisen parameter with decreasing lm thickness. This work advances the understanding of size dependence in the heat capacity of amorphous polymers as well as highlights their potential for capacitive thermal management. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2011-04-27T13:17:20Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Master Thesis.rar: 30163 bytes, checksum: 128c394c7e97c6f0416f112a56b06f40 (MD5) Tian_Hongxiang.pdf: 3197467 bytes, checksum: 2030762aa1be6bbbfc196fcc25ef922c (MD5) Made available in DSpace on 2011-05-25T15:03:49Z (GMT). No. of bitstreams: 3 Tian_Hongxiang.pdf: 3197458 bytes, checksum: 3407e589f4f179e5bf0a68d8b277c362 (MD5) license.txt: 4062 bytes, checksum: 539bffb40254f4574ced454744c6692b (MD5) Master Thesis.rar: 30163 bytes, checksum: 128c394c7e97c6f0416f112a56b06f40 (MD5) http://hdl.handle.net/2142/24118 en Copyright 2011 Hongxiang Tian thin film differential scanning calorimetry heat capacity fluorocarbon polymer Volumetric heat capacity enhancement in ultrathin fluorocarbon polymers for capacitive thermal management Mechanical Sci & Engineering 1917 Mechanical Engineering 0133 University of Illinois at Urbana-Champaign Thesis M.S. MS:Mechanical Engineerng -UIUC 10KS0133MS