Nano-structured phase change materials and their calorimetry

Oksen T. Baris, Sanjiv Sinha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Phase change materials (PCMs) store thermal energy through a phase transition. Extending the use of PCMs to transient thermal management of electronic handheld devices requires storage capacity beyond 195 kJ/m 3, typical limit of a paraffin. Nano-structures can potentially increase the material choice for PCMs. Melting behavior and heat of fusion are empirically known to be altered in nano-structures. In this paper, we present thermodynamic modeling to show that confinement can lead to an enhancement in the heat of fusion of soft matter. We present material concepts that can serve as such enhanced PCMs. We also discuss modifying existing calorimetry techniques to measure the heat capacity of nanometer scale thin films of soft matter. Design and sensitivity details of nano-calorimeter are presented to analyze phase change phenomenon in ultra-thin polymer films.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages353-359
Number of pages7
EditionPART A
ISBN (Print)9780791843857
DOIs
StatePublished - Jan 1 2010
EventASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: Nov 13 2009Nov 19 2009

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
NumberPART A
Volume12

Other

OtherASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009
Country/TerritoryUnited States
CityLake Buena Vista, FL
Period11/13/0911/19/09

ASJC Scopus subject areas

  • Mechanical Engineering

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