Optical limiting properties of silver nanoprisms

被引：53
作者：
Polavarapu, Lakshminarayana [1 ]
Xu, Qing-Hua [1 ]
Dhoni, Mohan S. [2 ]
Ji, Wei [2 ]
机构：
[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore
[2] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 26期
关键词：
D O I：
10.1063/1.2955530
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report exceptional optical limiting properties of two kinds of Ag nanoprisms (pure Ag nanoprisms and Au@Ag core-shell nanoprisms) in solution that were photochemically prepared. Fluence-dependent transmittance measurements using 7 ns laser pulses of 532 nm wavelength showed that the optical limiting properties of two kinds of silver nanoprisms in solution are slightly better than that of carbon nanotube suspensions, which is known as a benchmark optical limiter. Nonlinear scattering experiments suggested that nonlinear scattering should play an important role in the observed optical limiting effects. (c) 2008 American Institute of Physics.
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