단결정 PbTe 단일 나노선의 열전도도

• Published in: 대한금속·재료학회지, 48(2) pp. 175 - 179
• Main Authors: 노종욱, 장소영, 강주훈, 이승현, 노진서, 박정희, 이우영
• Format: Journal Article
• Language: Korean
• Published: 대한금속·재료학회 01.02.2010
• Subjects: 재료공학
• ISSN: 1738-8228; 2288-8241

We investigated the thermal conductivity of individual single-crystalline PbTe nanowires grown by chemical vapor transport method. Suspended MEMS was utilized to precisely measure the thermal conductivity of an individual nanowire. The thermal conductivity of a PbTe nanowire with diameter of 292nm was measured to be 1.8 W/m·K at 300 K, which is about two thirds of that of bulk PbTe. This result indicates that the thermal conduction through a PbTe nanowire is effectively suppressed by the enhanced phonon boundary scattering. As the diameter of a PbTe nanowire decreases, the corresponding thermal conductivity linearly decreases. KCI Citation Count: 8