2024학년 2학기 제9회 정기세미나를 다음과 같이 개최하오니, 연구단 참여 대학원생 및 교수님들의 많은 참여를 부탁드립니다.
이번 강연에는 나노광전자학과 조성용 교수님의 초청으로 서울대학교 장혜진 교수님을 모시고 세미나를 개최합니다.
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1. 주제 : Nanoscale heat transport in functional materials
2. 연사 : 장혜진 교수 (서울대학교)
3. 일시 : 2024년 11월 20일(수) 오전 10시
4. 장소 : 제2과학기술관 616호
5. 발표 내용
Understanding the thermal transport properties of materials is essential for both materials science and device applications. Thermal conductivity and interfacial thermal conductance are important engineering parameters for the thermal management of electronics and energy industry. However, predicting or controlling these properties can be challenging, as heat transport mechanisms may change at the nanoscale. In this talk, I will present how phonon heat transport occurs in layered materials, such as graphite fluoride, and at their interfaces. Layered materials are interesting because they present both extremes of heat transport. Ultrahigh thermal conductivity is observed in the in-plane direction of graphite, while ultralow thermal conductivity is observed along the through-plane direction of graphite fluoride. This also leads to ultralow thermal conductance at the interface between the layered materials and metals, which can be effectively utilized for ultrathin thermal insulators. Additionally, I will show one of the materials design problems for urgent industrial applications, i.e., thermal interface materials. I will also introduce my methodology based on ultrafast pulsed laser source, time-domain thermoreflectance (TDTR), which can effectively investigate the three-dimensional heat transport properties of solids.
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많은 참석 부탁드립니다.
감사합니다.