"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Composition controlling the number of absorption peaks in three-layered metal-dielectric-metal nanoshell

GUOJUN WENG1, JIANJUN LI1, JUNWU ZHAO1,*

Affiliation

  1. The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China

Abstract

The number change of absorption peaks of three-layered nanoshells have been investigated in theory with variation of the composition. With an increase of the gold content in the inner core and outer shell, the number of absorption peaks changed from three to two and from one to two, respectively. And the corresponding physical mechanism had been discussed. The number tunability of peaks coming from the composition was affected by the geometrical parameters and the dielectric constant. This composition dependent number change of peaks would provide insights to synthesis and designing of three-layered nanoshells sensors for multi-molecular sensing..

Keywords

Au/Ag alloy, Quasistatic approximation, Three-layered nanoshells, Number tunability of absorption peaks.

Citation

GUOJUN WENG, JIANJUN LI, JUNWU ZHAO, Composition controlling the number of absorption peaks in three-layered metal-dielectric-metal nanoshell, Optoelectronics and Advanced Materials - Rapid Communications, 10, 3-4, March-April 2016, pp.185-190 (2016).

Submitted at: April 2, 2015

Accepted at: April 5, 2016