Lee, Heon Sang Yun, Chang Hun Kim, Sun Kug Choi, Ji Hoon Lee, Cheol Jin Jin, Hyoung-Joon Lee, Hyunjung Park, Sang Joon Park, Min 2024-01-20T20:34:31Z 2024-01-20T20:34:31Z 2021-09-05 2009-09-28 0003-6951 https://pubs.kist.re.kr/handle/201004/132151 We highlight the significance of multiwall carbon nanotube (MWCNT) shape on the electrical percolation. For rodlike MWCNTs, percolation threshold depends on aspect ratio (L/d). For random coil-like MWCNTs, the percolation threshold does not depend on L/d but depends on the shape factor of MWCNTs represented by the ratio between static bending persistence length and diameter. Surface resistivities of various MWCNTs converge into single curve when we plot their dimensionless surface concentration versus surface resistivity. The surface resistivity of MWCNT films decrease with increasing temperature, particularly at low concentrations, indicating the films can be used as a negative temperature coefficient thermistor. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3238326] English AMER INST PHYSICS ELECTRICAL-CONDUCTIVITY TRANSPARENT COMPOSITES FILMS Percolation of two-dimensional multiwall carbon nanotube networks Article 10.1063/1.3238326 1 APPLIED PHYSICS LETTERS, v.95, no.13 APPLIED PHYSICS LETTERS 95 13 scie scopus 000270458000095 2-s2.0-70349694371 Physics, Applied Physics Article ELECTRICAL-CONDUCTIVITY TRANSPARENT COMPOSITES FILMS 탄소나노튜브 전도도 carbon nanotube