Title :
Thermal conductivity reduction in an individual single crystalline Bi nanowire by size effect
Author :
Roh, Jong Wook ; Hippalgaonkar, Kedar ; Kang, Joohoon ; Lee, Seunghyn ; Ham, Jin Hee ; Chen, Renkun ; Majumdar, Arun ; Kim, Woochul ; Lee, Wooyoung
Author_Institution :
Dept. of Mater. Sci. & Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We measured thermal conductivity of an individual single-crystalline Bi nanowire grown by a spontaneous growth method. The measured thermal conductivity (¿) for 98 nm diameter Bi nanowire is about 1.6 W/m·K at 300 K, which is much lower than that of bulk Bi (¿ for bulk Bi ¿ 8 W/m-K at 300 K). This indicates that the thermal conductivity of Bi nanowires is suppressed by the strong phonon boundary scattering.
Keywords :
bismuth; nanowires; size effect; thermal conductivity; Bi; phonon boundary scattering; single crystalline Bi nanowire; size effect; spontaneous growth method; temperature 300 K; thermal conductivity reduction; Biomembranes; Bismuth; Conducting materials; Conductivity measurement; Crystallization; Nanostructured materials; Optical microscopy; Phonons; Scanning electron microscopy; Thermal conductivity;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5424707
