Synthesis of Core@Shell Composites with Gold Nanoparticles Trapped Inside Ceramic Silica Shells by the Sol-Gel Method

摘要：

　　This paper describes a sol-gel (SG) method for the coating of gold nanoparticles with uniform shells of amorphous silica.The thickness of silica could be conveniently controlled in the range of 10 to 120 nm by increasing the amount of water.Although spherical gold nanoparticles generally have a surface plasmon resonance (SPR) at a wavelength of about 520 nm,a spherical gold core with a silica shell offers a very highly tunable SPR wavelength depending on the thickness of the silica shell.

关键词： Gold nanoparticles Sol-gel Surface plasmon resonance

作者: Chien-Jung Huang Pin-Hsiang Chiu Yeong-Her Wang

作者单位: Department of Applied Physics,National University of Kaohsiung,＃700 Kaohsiung University Rd.,Nan-Tzu Institute of Electro-Optical Science and Engineering,National Cheng-Kung University,#1 University Rd Institute of Electro-Optical Science and Engineering,National Cheng-Kung University,#1 University Rd

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 797-799

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）