Using Scanning-Probe Block Copolymer Lithography and Electron Microscopy To Track Shape Evolution in Multimetallic Nano clusters

作者：Liu Guoliang; Zhang Chuan; Wu Jinsong; Mirkin Chad A^*

来源：ACS Nano, 2015, 9(12): 12137-12145.

DOI：10.1021/acsnano.5b05191

• scanning-probe block copolymer lithography
• core-shell nanoparticle
• shape evolution
• multimetallic nanocluster

Here we describe a general method for synthesizing multimetallic core shell nanoclusters on surfaces. By patterning seeds at predesignated locations using scanning-probe block copolymer lithography, we can track shape evolution in nanoclusters and elucidate their growth pathways using electron microscopy. The growth of core-shell nanostructures on surface-bound seeds is a highly anisotropic process and often results in multimetallic anisotropic nanostructures. The shell grows at specific edge and corner sites of the patterned seeds and propagates predominately from the top hemisphere of the seeds.

• 出版日期2015-12
• 单位西北大学