Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/34341
標題: Coil-in-Coil Carbon Nanocods: 11 Gram-Scale Synthesis, Single Nanocod Electrical Properties, and Electrical Contact Improvement
作者: Tang, N.J.
郭華丞
Kuo, W.
Jeng, C.C.
Wang, L.Y.
Lin, K.J.
Du, Y.W.
鄭建宗
關鍵字: carbon nanocoils
coiled structures
catalytic growth
electrical
property
electrical contact improvement
microwave-absorption properties
field-effect transistors
universal
crossover
nanotubes
fragmentation
performance
期刊/報告no:: Acs Nano, Volume 4, Issue 2, Page(s) 781-788.
摘要: Coil-in-coil carbon nanocoils (CNCs) were synthesized by means of acetylene decomposition using nickel nanoparticles as catalysts. The investigations revealed that there are often several CNCs self-assembled in one nanospring. The yield of coil-in-coil CNCs was high up to 11 g in each run at the decomposition temperature of 450 degrees C. CNC nanodevices were fabricated for systematical examinations of charge conduction in the single CNC and in the electrical contacts. A focused laser beam of about 70 mu m in diameter was applied for selective annealing CNC nanodevices so as to improve the electrical contacts to the CNC. Our study showed that the selective focused laser annealing technique is an effective route to improve the electrical contacts to the nanodevice. Temperature-dependent CNC resistances are analyzed with the Mott-variable range hopping (VRH) and Efros-Shkiovskii.VRH model, revealing electron hopping conduction in the disordered CNCs with a characteristic length of about 5-50 nm.
URI: http://hdl.handle.net/11455/34341
ISSN: 1936-0851
文章連結: http://dx.doi.org/10.1021/nn901417z
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