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멀티스케일 에너지 강좌
미래창조과학부 글로벌프론티어 (재)멀티스케일 에너지 시스템 연구단은 나노기술과 에너지
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1. 제 목 : Thermoelectric Energy Harvesting and Cooling with Flexible Polymer
Nanocomposites
2. 연 사 : 유충호 교수 (Texas A&M University)
3. 일 시 : 2013년 05월 13일 (월) 오후 17:00 ~ 18:00
4. 장 소 : 서울대학교 신공학관(301동) 117호 세미나실
5. 내 용 :
Abstract : Thermoelectric systems are very effective in solid state cooling and electricity
harvesting from waste heat or heat sources with low temperature gradients relative to the
environmental temperature. Their simple leg-type structures, without moving parts, provide
enormous advantages over conventional turbines, engines, and compressors. In addition,
their high energy density (per unit weight and volume) is ideal for mobile power sources and
distribution systems.
This seminar includes recent progress in new-class of organic thermoelectric materials,
which can provide light-weight (higher power density), inexpensive, and non-toxic solutions
for waste heat (i.e., energy) recovery or cooling. Polymers are intrinsically poor thermal
conductors, which makes them ideal for thermoelectrics, but low electrical conductivity and
thermopower (or the Seebeck coefficient) have excluded them as feasible candidates in the
past. Our recent results, however, demonstrated that electrical properties of organic
composites can be brought into degenerate semiconductor or metallic regimes by
incorporating conductive nanoparticles without significantly changing thermal conductivity.
This talk includes material synthesis/characterization of such composites in addition to the
details of our approach.
6. 약 력 : Dr. Choongho Yu is currently an assistant professor in the department of
mechanical engineering and materials science and engineering at Texas A&M University
(College station, Texas, USA). Prior to joining Texas A&M University in 2007, he spent
three years in materials sciences division at Lawrence Berkeley National Laboratory and
mechanical engineering at UC Berkeley in California. He received his Ph.D. degree
(2004) in mechanical engineering from the University of Texas at Austin. His research
closely related to the investigation of energy carrier transport and
synthesis/characterization of nanostructured materials. Specific topics include the
development of organic/inorganic thermoelectric materials, thermal interface materials,
nanostructured electrodes for Li-ion batteries, microbial fuel cells, MEMS/BioMEMS/NEMS sensors as well as the investigation of thermal transport in nanotubes/wires.
 문 의 : 멀티스케일 에너지 시스템 연구단 연구지원본부 (☏ 889-6669,6670)
남기태 교수 (재료공학부), 최만수 교수 (기계항공공학부)
미래창조과학부 글로벌 프론티어
멀티스케일 에너지 시스템 연구단/서울대학교