物理化学学报 >> 2007, Vol. 23 >> Issue (02): 242-246.doi: 10.1016/S1872-1508(07)60019-9

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溶液中纳米SnO2颗粒的瑞利和超瑞利散色

徐卫星   

  1. 南京大学 化学系,南京 210093
  • 收稿日期:2006-06-01 修回日期:2006-09-16 发布日期:2007-02-01
  • 通讯作者: 徐卫星 E-mail:dumplingcat_2@yahoo.com

Rayleigh and Hyper-Rayleigh Scatterings from the Nanometer SnO2 Particle in Solution

XU Wei-Xing   

  1. Department of Chemistry, University of Nanjing, 210093, P.R. China
  • Received:2006-06-01 Revised:2006-09-16 Published:2007-02-01
  • Contact: Wei-Xing Xu E-mail:dumplingcat_2@yahoo.com

摘要: Rayleigh and Hyper-Rayleigh scatterings(HRS) from the nano-particle SnO2 were measured. It is found that as the concentration of the colloidal SnO2 or radiation power increases, the first- and second-order polarizabilities decrease. The radiation power dependencies of the first- and second-order polarizabilities show two domains: in high radiation power domain, the first- and second-order polarizabilities are approximately constant, in low radiation power domain, the first- and second-order polarizabilities increase sharply and become sensitive to the radiation power. The behavior of the concentration dependencies of the first- and second-order polarizabilities of colloidal SnO2 particles is similar to that of the radiation power dependence. A detailed mechanism explaining these phenomena has been discussed.

关键词: Hyper-Rayleigh, Nanoparticle, SnO2

Abstract: Rayleigh and Hyper-Rayleigh scatterings(HRS) from the nano-particle SnO2 were measured. It is found that as the concentration of the colloidal SnO2 or radiation power increases, the first- and second-order polarizabilities decrease. The radiation power dependencies of the first- and second-order polarizabilities show two domains: in high radiation power domain, the first- and second-order polarizabilities are approximately constant, in low radiation power domain, the first- and second-order polarizabilities increase sharply and become sensitive to the radiation power. The behavior of the concentration dependencies of the first- and second-order polarizabilities of colloidal SnO2 particles is similar to that of the radiation power dependence. A detailed mechanism explaining these phenomena has been discussed.

Key words: Hyper-Rayleigh, Nanoparticle, SnO2