Enhanced near-field imaging contrasts of silver nanoparticles by localized surface plasmon

Yun Chorng Chang, Hsueh Wei Chen, Shih Hui Chang

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

Near-field images of Ag nanoparticles are studied using a near-field scanning optical microscopy (NSOM) operating at illumination mode with blue, green, and red probing lights. The obtained far-field intensity contrast between the nanoparticle and background strongly depends on the sizes of nanoparticles and the wavelength of probing light. Experimental NSOM images supported by theoretical 3-D finite-difference time-domain simulation demonstrate that the intensity contrast is enhanced at wavelength close to the localized surface plasmon resonance (LSPR) peak of the nanoparticle. The abilities to distinguish nanoparticles with different LSPR properties on the same substrate can lead to a material-specific NSOM imaging technique.

原文English
文章編號4509447
頁(從 - 到)1536-1539
頁數4
期刊IEEE Journal on Selected Topics in Quantum Electronics
14
發行號6
DOIs
出版狀態Published - 2008 十一月

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學
  • 電氣與電子工程

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