{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/16194"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/16194","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Thermodynamic modeling and microcalorimetry of nanostructured materials for capacitive thermal management of electronics","abstract":"Transient power dissipation profiles in handheld electronic devices alternate between high and low power states depending on usage. Capacitive thermal management based on phase change materials potentially offers a fan-less thermal management for such transient profiles. However, such capacitive management becomes feasible only if there is a significant enhancement in the enthalpy change per unit volume of the phase change material since existing bulk materials such as paraffin fall short of requirements. In this thesis I propose novel nanostructured thin-film materials that can potentially exhibit significantly enhanced volumetric enthalpy change. Using fundamental thermodynamics of phase transition, calculations regarding the enhancement resulting from superheating in such thin film systems is conducted. Furthermore design of a microfabricated calorimeter to measure such enhancements is explained in detail. This work advances the state-of-art of phase change materials for capacitive cooling of handheld devices.","abstract_html":"Transient power dissipation profiles in handheld electronic devices alternate between high and low power states depending on usage. Capacitive thermal management based on phase change materials potentially offers a fan-less thermal management for such transient profiles. However, such capacitive management becomes feasible only if there is a significant enhancement in the enthalpy change per unit volume of the phase change material since existing bulk materials such as paraffin fall short of requirements. In this thesis I propose novel nanostructured thin-film materials that can potentially exhibit significantly enhanced volumetric enthalpy change. Using fundamental thermodynamics of phase transition, calculations regarding the enhancement resulting from superheating in such thin film systems is conducted. Furthermore design of a microfabricated calorimeter to measure such enhancements is explained in detail. This work advances the state-of-art of phase change materials for capacitive cooling of handheld devices.","abstract_has_math":false,"creators":["Baris, Oksen T."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Sinha, Sanjiv"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2010,"date_issued":"2010-05-19T18:40:17Z","date_published":"2010-05-19T18:40:17Z","updated_at":"2026-07-22T22:25:08Z","subjects":["Phase change material (PCM)","capacitive cooling","cooling chip for handheld electronic devices","handheld electronics","electronics cooling","thermal management","transient loads","micro calorimerty","nano calorimetry","heat capacity measurement"],"languages":["en"],"rights":["Copyright 2010 Baris T Oksen"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/16194","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Sinha, Sanjiv"]},{"key":"dc:creator","label":"Author","values":["Baris, Oksen T."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2010-05-19T18:40:17Z","2010-5"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Phase change material (PCM)","capacitive cooling","cooling chip for handheld electronic devices","handheld electronics","electronics cooling","thermal management","transient loads","micro calorimerty","nano calorimetry","heat capacity measurement"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2010 Baris T Oksen"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/16194"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Transient power dissipation profiles in handheld electronic devices alternate between high and low power states depending on usage. Capacitive thermal management based on phase change materials potentially offers a fan-less thermal management for such transient profiles. However, such capacitive management becomes feasible only if there is a significant enhancement in the enthalpy change per unit volume of the phase change material since existing bulk materials such as paraffin fall short of requirements. In this thesis I propose novel nanostructured thin-film materials that can potentially exhibit significantly enhanced volumetric enthalpy change. Using fundamental thermodynamics of phase transition, calculations regarding the enhancement resulting from superheating in such thin film systems is conducted. Furthermore design of a microfabricated calorimeter to measure such enhancements is explained in detail. This work advances the state-of-art of phase change materials for capacitive cooling of handheld devices.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-04-29T15:40:49Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 5 IEEE_ECE.bst: 59368 bytes, checksum: a479f3f95bdd18b18ad6340c0dd67d28 (MD5) uiucecethesis08c.cls: 18246 bytes, checksum: 682fa640447fedbd735a0a2b7d507c48 (MD5) thesist.bib: 24732 bytes, checksum: 7d7dc9aaea03795c5bb6aed5163749ab (MD5) baris_oksen.tex: 66272 bytes, checksum: cb5d8749d7532e34570ef2a39ffc605d (MD5) baris_oksen.pdf: 4228501 bytes, checksum: fe989556b9b9409bc5ee63d669ebcbdf (MD5)","Made available in DSpace on 2010-05-19T18:40:17Z (GMT). No. of bitstreams: 7 baris_oksen.pdf: 4228501 bytes, checksum: fe989556b9b9409bc5ee63d669ebcbdf (MD5) IEEE_ECE.bst: 59368 bytes, checksum: a479f3f95bdd18b18ad6340c0dd67d28 (MD5) uiucecethesis08c.cls: 18246 bytes, checksum: 682fa640447fedbd735a0a2b7d507c48 (MD5) thesist.bib: 24732 bytes, checksum: 7d7dc9aaea03795c5bb6aed5163749ab (MD5) baris_oksen.tex: 66272 bytes, checksum: cb5d8749d7532e34570ef2a39ffc605d (MD5) 1_baris_oksen.pdf: 4239240 bytes, checksum: bf2a075bc2abf18915f9ba2da8a695ba (MD5) license.txt: 4060 bytes, checksum: b425396986cc19dafbc9b0e99da61947 (MD5)"]},{"key":"dc:title","label":"Title","values":["Thermodynamic modeling and microcalorimetry of nanostructured materials for capacitive thermal management of electronics"]}]}],"canonical_facts":{"dc:contributor":["Sinha, Sanjiv"],"dc:creator":["Baris, Oksen T."],"dc:date":["2010-05-19T18:40:17Z","2010-5"],"dc:description":["Transient power dissipation profiles in handheld electronic devices alternate between high and low power states depending on usage. Capacitive thermal management based on phase change materials potentially offers a fan-less thermal management for such transient profiles. However, such capacitive management becomes feasible only if there is a significant enhancement in the enthalpy change per unit volume of the phase change material since existing bulk materials such as paraffin fall short of requirements. In this thesis I propose novel nanostructured thin-film materials that can potentially exhibit significantly enhanced volumetric enthalpy change. Using fundamental thermodynamics of phase transition, calculations regarding the enhancement resulting from superheating in such thin film systems is conducted. Furthermore design of a microfabricated calorimeter to measure such enhancements is explained in detail. This work advances the state-of-art of phase change materials for capacitive cooling of handheld devices.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-04-29T15:40:49Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 5 IEEE_ECE.bst: 59368 bytes, checksum: a479f3f95bdd18b18ad6340c0dd67d28 (MD5) uiucecethesis08c.cls: 18246 bytes, checksum: 682fa640447fedbd735a0a2b7d507c48 (MD5) thesist.bib: 24732 bytes, checksum: 7d7dc9aaea03795c5bb6aed5163749ab (MD5) baris_oksen.tex: 66272 bytes, checksum: cb5d8749d7532e34570ef2a39ffc605d (MD5) baris_oksen.pdf: 4228501 bytes, checksum: fe989556b9b9409bc5ee63d669ebcbdf (MD5)","Made available in DSpace on 2010-05-19T18:40:17Z (GMT). No. of bitstreams: 7 baris_oksen.pdf: 4228501 bytes, checksum: fe989556b9b9409bc5ee63d669ebcbdf (MD5) IEEE_ECE.bst: 59368 bytes, checksum: a479f3f95bdd18b18ad6340c0dd67d28 (MD5) uiucecethesis08c.cls: 18246 bytes, checksum: 682fa640447fedbd735a0a2b7d507c48 (MD5) thesist.bib: 24732 bytes, checksum: 7d7dc9aaea03795c5bb6aed5163749ab (MD5) baris_oksen.tex: 66272 bytes, checksum: cb5d8749d7532e34570ef2a39ffc605d (MD5) 1_baris_oksen.pdf: 4239240 bytes, checksum: bf2a075bc2abf18915f9ba2da8a695ba (MD5) license.txt: 4060 bytes, checksum: b425396986cc19dafbc9b0e99da61947 (MD5)"],"dc:identifier":["http://hdl.handle.net/2142/16194"],"dc:language":["en"],"dc:rights":["Copyright 2010 Baris T Oksen"],"dc:subject":["Phase change material (PCM)","capacitive cooling","cooling chip for handheld electronic devices","handheld electronics","electronics cooling","thermal management","transient loads","micro calorimerty","nano calorimetry","heat capacity measurement"],"dc:title":["Thermodynamic modeling and microcalorimetry of nanostructured materials for capacitive thermal management of electronics"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:08Z"}