Open Access Nano Express

Obvious Temperature Difference Along a Pb Cluster-Decorated Carbon Nanowire

Fengqi Song1*, Longbing He2, Min Han2, Jianguo Wan1 and Guanghou Wang1

Author affiliations

1 National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 210093, Nanjing, China

2 National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, 210093, Nanjing, China

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Citation and License

Nanoscale Research Letters 2009, 5:138-142  doi:10.1007/s11671-009-9455-y

Published: 10 October 2009

Abstract

Pb nanoclusters were deposited onto a suspended carbon nanowire (CNW), where in situ temperature variable observation was carried out by a transmission electron microscope. The heating temperature was up to 450 °C. Both the melting and evaporation of the Pb nanoparticles on the CNW were retarded when compared to the particles on the support frame. The obvious temperature difference of up to 10 K along the CNW of less than 1 μm was demonstrated. It was attributed to the irradiating dissipation-dependent on the surface area of the decorating Pb particle by calculation.

(See supplementary material 1)

Electronic supplementary material. The online version of this article (doi:10.1007/s11671-009-9455-y) contains supplementary material, which is available to authorized users.

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Keywords:
Temperature difference; Retarded melting; Thermal transportation; Pb; Cluster; Carbon nanowire