Optical force enhanced by plasmon resonance allowing position-sensitive synthesis and immobilization of single Ag nanoparticles on glass surfaces

被引：9

作者：

Itoh, Tamitake ^{[1
]}

Biju, Vasudevanpillai ^{[1
]}

Ishikawa, Mitsuru ^{[1
]}

Ito, Syoji ^{[2
,3
]}

Miyasaka, Hiroshi ^{[2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Hlth Technol Res Ctr, Kagawa 7610395, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Div Frontier Mat Sci, Osaka 5608531, Japan

[3] JST, PRESTO, Aobaku Ku, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 14期

关键词：

adsorption; aggregation; glass; nanofabrication; nanoparticles; Rayleigh scattering; silver; surface plasmon resonance; GOLD NANOPARTICLES; RAMAN;

D O I：

10.1063/1.3106617

中图分类号：

O59 [应用物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Focused laser light in an aqueous solution of silver nitrate and disodium citrate allowed the synthesis and immobilization of single Ag particles on a glass surface. The as-synthesized Ag particles were free from aggregation. Rayleigh scattering spectra of the Ag particles showed a plasmon resonance band at similar to 490 nm. Analysis of the spectra revealed that the Ag particles have oblate-spindle shapes with similar to 30 nm diameter. The polarizability of the Ag nanoparticles demonstrated that soon after the formation of the particles at the focal point, optical force repels them out of the focal point and immobilizes on the glass surface.

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