Accession Number : AD1002804

Title :   Graphene templated Directional Growth of an Inorganic Nanowire

Descriptive Note : Journal Article - Open Access

Corporate Author : University of California at Berkeley Berkeley United States

Personal Author(s) : Lee,Won C ; Kim,Kwanpyo ; Park,Jungwon ; Koo,Jahyun ; Jeong,Hu Y ; Lee,Hoonkyung ; Weitz,David A ; Zettl,Alex ; Takeuchi,Shoji

Full Text :

Report Date : 23 Mar 2015

Pagination or Media Count : 22

Abstract : Assembling inorganic nanomaterials on graphene13 is of interest in the development of nanodevices and nanocomposite materials, and the ability to align such inorganic nanomaterials on the graphene surface is expected to lead to improved functionalities4,as has previously been demonstrated with organic nanomaterials epitaxially aligned on graphitic surfaces510.However, because graphene is chemically inert, it is difficult to precisely assemble inorganic nanomaterials on pristine graphene2,1116. Previous techniques2,3 based on dangling bonds of damaged graphene11,1720, intermediate seed materials11,15,16,21,22and vapour-phase deposition at high temperature1214,2325 have only formed randomly oriented or poorly aligned inorganic nanostructures. Here, we show that inorganic nanowires of gold(I) cyanide can grow directly on pristine graphene, aligning themselves with the zigzag lattice directions of the graphene. The nanowires are synthesized through a self-organized growth process in aqueous solution at room temperature, which indicates that the inorganic material spontaneously binds to the pristine graphene surface. First-principles calculations suggest that this assembly originates from lattice matching and interaction to gold atoms. Using the synthesized nanowires as templates, we also fabricate nanostructures with controlled crystal orientations such as graphene nanoribbons with zigzag-edged directions.

Descriptors :   nanotechnology , GRAPHENE , nanocomposites , nanomaterials , nanostructures , NANOWIRES

Subject Categories : Miscellaneous Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE