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contributor authorLi, Xiangyu
contributor authorPark, Wonjun
contributor authorChen, Yong P.
contributor authorRuan, Xiulin
date accessioned2017-11-25T07:16:44Z
date available2017-11-25T07:16:44Z
date copyright2016/11/10
date issued2017
identifier issn0022-1481
identifier otherht_139_02_022401.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4234169
description abstractMetal nanoparticle has been a promising option for fillers in thermal interface materials due to its low cost and ease of fabrication. However, nanoparticle aggregation effect is not well understood because of its complexity. Theoretical models, like effective medium approximation model, barely cover aggregation effect. In this work, we have fabricated nickel–epoxy nanocomposites and observed higher thermal conductivity than effective medium theory predicts. Smaller particles are also found to show higher thermal conductivity, contrary to classical models indicate. A two-level effective medium approximation (EMA) model is developed to account for aggregation effect and to explain the size-dependent enhancement of thermal conductivity by introducing local concentration in aggregation structures.
publisherThe American Society of Mechanical Engineers (ASME)
titleEffect of Particle Size and Aggregation on Thermal Conductivity of Metal–Polymer Nanocomposite
typeJournal Paper
journal volume139
journal issue2
journal titleJournal of Heat Transfer
identifier doi10.1115/1.4034757
journal fristpage22401
journal lastpage022401-5
treeJournal of Heat Transfer:;2017:;volume( 139 ):;issue: 002
contenttypeFulltext


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