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Kim, Gun-Ho
SoftHeat Group
Research Interests
  • Heat transfer mechanism in soft materials (e.g., plastics, animal tissues)
  • Development of thermally conductive plastics and high performance polymeric thermoelectric heat engine
  • Development of biomedical devices that use responses of animals to environmental temperature changes

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Enhanced Thermal Transport across Self-Interfacing van der Waals Contacts in Flexible Thermal Devices

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Title
Enhanced Thermal Transport across Self-Interfacing van der Waals Contacts in Flexible Thermal Devices
Author
Seong, MinhoHwang, InsolPark, SeongjinJang, HyejinChoi, GeonjunKim, JaeilKim, Shin-KwanKim, Gun-HoYeo, JunyeobJeong, Hoon Eui
Issue Date
2021-11
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED FUNCTIONAL MATERIALS, v.31, no.48, pp.2107023
Abstract
Minimizing the thermal contact resistance (TCR) at the boundary between two bodies in contact is critical in diverse thermal transport devices. Conventional thermal contact methods have several limitations, such as high TCR, low interfacial adhesion, a requirement for high external pressure, and low optical transparency. Here, a self-interfacing flexible thermal device (STD) that can form robust van der Waals mechanical contact and low-resistant thermal contact to planar and non-planar substrates without the need for external pressure or surface modification is presented. The device is based on a distinctive integration of a bioinspired adhesive architecture and a thermal transport layer formed from percolating silver nanowire (AgNW) networks. The proposed device exhibits a strong attachment (maximum 538.9 kPa) to target substrates while facilitating thermal transport across the contact interface with low TCR (0.012 m(2) K kW(-1)) without the use of external pressure, thermal interfacial materials, or surface chemistries.
URI
https://scholarworks.unist.ac.kr/handle/201301/53535
URL
https://onlinelibrary.wiley.com/doi/10.1002/adfm.202107023
DOI
10.1002/adfm.202107023
ISSN
1616-301X
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