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Title: Gold and silver coated carbon nanotubes: An improved broad-band optical limiter
Authors: Chin, K.C. 
Gohel, A.
Chen, W.Z.
Elim, H.I. 
Ji, W. 
Chong, G.L. 
Sow, C.H. 
Wee, A.T.S. 
Issue Date: 20-Jun-2005
Source: Chin, K.C., Gohel, A., Chen, W.Z., Elim, H.I., Ji, W., Chong, G.L., Sow, C.H., Wee, A.T.S. (2005-06-20). Gold and silver coated carbon nanotubes: An improved broad-band optical limiter. Chemical Physics Letters 409 (1-3) : 85-88. ScholarBank@NUS Repository.
Abstract: 5-nm-thick coatings of polycrystalline gold and polycrystalline silver were deposited on multiwalled carbon nanotubes. Their optical limiting properties were studied as a suspension in water at 532 and 1064 nm wavelengths by nanosecond laser pulses. Experiments show that they possess stronger OL performance compared to pure carbon nanotubes at 532 nm, but there were no visible OL enhancements at 1064 nm. We propose surface plasma absorption of Au and Ag as the mechanism responsible for the enhancement of nonlinear scattering effects. Our study provides evidence that coating carbon nanotubes with polycrystalline Au or Ag is a simple and effective method for improving OL performance. © 2005 Elsevier B.V. All rights reserved.
Source Title: Chemical Physics Letters
ISSN: 00092614
DOI: 10.1016/j.cplett.2005.04.092
Appears in Collections:Staff Publications

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