인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Recently, many studies for enhancing the thermoelectric performance by tuning the phonon dispersion and introducing the phonon scattering via nano-structuring have been reported. For example, simulations have predicted that the thermal conductivity of graphene can be tuned by strain. However, they have shown the contradictory results and the measurement results of thermal conductivity of strained graphene are hard to find. In this study, we experimentally measure the strain effect on the thermal conductivity of suspended graphene by utilizing the null point scanning thermal microscopy, which can directly apply the strain to the graphene and simultaneously measure the change of the spreading resistance which is inversely proportional to the thermal conductivity. The strain is applied to the graphene by pushing the thermocouple probe, whose T.C. junction is locally heated, to the center of the suspended graphene disk. The change of spreading resistance of the graphene is obtained by monitoring the temperature signals measured at T.C. junction and ultimately, we can observe the strain effect on the thermal conductivity of the graphene.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.