Fabrication of Two-Dimensional Arrays of Micron-Sized Gold Rings Based on Preferential Nucleation at Reentrant Sites  

作　　者：董雯 郭祥 王斯祯 王振林 闵乃本 

机构地区：[1]National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 [2]Department of Physics, Suzhou University, Suzhou 215006

出　　处：《Chinese Physics Letters》2008年第8期2957-2960,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Programme of China, the National Natural Science Foundation of China under Grant Nos 50771054, 10734010 and 10425415, the Natural Science Foundation of Jiangsu Education Committee under Grant No 07KJBI40098, and the NSFJPe under Grant No BK2006716.

摘　　要：A templating method for fabricating two-dimensional （2D） arrays of micron-sized goM rings is reported. The microstructures are formed by electroless plating in a through-porous polymer membrane on a silicon substrate obtained from a closed-packed silica colloidal crystal. Our results show that the sizes of gold rings can be altered by varying electroless plating conditions for the porous polystyrene membranes. Moreover, we explain the growth mechanism of gold rings using the classical crystal growth theory that is preferential nucleation at reentrant sites.A templating method for fabricating two-dimensional （2D） arrays of micron-sized goM rings is reported. The microstructures are formed by electroless plating in a through-porous polymer membrane on a silicon substrate obtained from a closed-packed silica colloidal crystal. Our results show that the sizes of gold rings can be altered by varying electroless plating conditions for the porous polystyrene membranes. Moreover, we explain the growth mechanism of gold rings using the classical crystal growth theory that is preferential nucleation at reentrant sites.

关 键 词：the power-law exponents precipitation durative abrupt precipitation change 

分 类 号：O48[理学—固体物理]