Unusual strain-dependent thermal conductivity modulation of silver nanoflower-polyurethane fibers
DC Field | Value | Language |
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dc.contributor.author | Agha Aamir Jan | - |
dc.contributor.author | Daewoo Suh | - |
dc.contributor.author | Seonghyun Bae | - |
dc.contributor.author | Seunghyun Baik | - |
dc.date.available | 2019-01-03T05:31:35Z | - |
dc.date.created | 2018-10-15 | - |
dc.date.issued | 2018-10 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/5119 | - |
dc.description.abstract | Thermal management of stretchable and wearable electronic devices is an important issue in enhancing performance, reliability, and human thermal comfort. Here, we constructed a unique experimental setup which investigated the strain-dependent thermal conductivity. The thermal conductivity of flower-shaped silver nanoparticle (silver nanoflower)-polyurethane (Ag-PU) composite fibers was systematically investigated as a function of strain. The strain-dependent temperature distribution of the Joule-heated fiber was measured using an infrared camera, and the thermal conductivity was obtained from the 1-dimensional Fourier's conduction model. There was a monotonic decrease in both lattice and electronic thermal conductivity with stretching at 25 °C. However, there was an initial increase in lattice and total thermal conductivity in the low strain region (<10%), when the fiber was stretched at 45 °C, although the electronic thermal conductivity decreased monotonically. The softening of the polymer at increased temperatures enhanced Poisson's ratio. Resultantly, the fiber cross-sectional area and radial-direction inter-particle distance between silver nanoflowers decreased. This could increase the thermal transport in conductive fibers by modulating the interfaces between silver nanoflowers and polyurethane. A further stretching decreased the lattice thermal conductivity due to the significantly increased axial distance between silver nanoflowers and the decreased filler fraction. The weft-knitted fabric also demonstrated an increased thermal conductance in the low strain region (≤30%) at 45 °C. © 2018 The Royal Society of Chemistry | - |
dc.description.uri | 1 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Unusual strain-dependent thermal conductivity modulation of silver nanoflower-polyurethane fibers | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000450934400038 | - |
dc.identifier.scopusid | 2-s2.0-85054263165 | - |
dc.identifier.rimsid | 65784 | - |
dc.contributor.affiliatedAuthor | Seunghyun Baik | - |
dc.identifier.doi | 10.1039/c8nr04818e | - |
dc.identifier.bibliographicCitation | NANOSCALE, v.10, no.37, pp.17799 - 17806 | - |
dc.citation.title | NANOSCALE | - |
dc.citation.volume | 10 | - |
dc.citation.number | 37 | - |
dc.citation.startPage | 17799 | - |
dc.citation.endPage | 17806 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | ELECTRICAL-CONDUCTIVITY | - |
dc.subject.keywordPlus | POLYMER COMPOSITES | - |
dc.subject.keywordPlus | STRETCHABLE FIBERS | - |
dc.subject.keywordPlus | CARBON NANOTUBES | - |
dc.subject.keywordPlus | ELASTIC-MODULUS | - |
dc.subject.keywordPlus | POLYETHYLENE | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | TIME | - |