Electrochemical Growth of Single-Crystal Metal Nanowires via a Two-Dimensional Nucleation and Growth Mechanism.
Metallic nanowires (Au, Ag, Cu, Ni, Co, and Rh) with an average diameter of 40 nm and a length of 3-5 μm have been fabricated by electrodeposition in the pores of track-etched polycarbonate membranes. Structural characterizations by transmission electron microscopy (TEM) and electron diffraction showed that nanowires of Au, Ag, and Cu are single-crystalline with a preferred [111] orientation, whereas Ni, Co, and Rh wires are polycrystalline. Possible mechanisms responsible for nucleation and growth for single-crystal noble metals versus polycrystalline group VIII-B metals are discussed.
The Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802-6300, Department of Physics, 104 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300, and Department of Chemistry, 108 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300.
Mingliang
M
Tian
The Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802-6300, Department of Physics, 104 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300, and Department of Chemistry, 108 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300.
Jinguo
J
Wang
The Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802-6300, Department of Physics, 104 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300, and Department of Chemistry, 108 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300.
James
J
Kurtz
The Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802-6300, Department of Physics, 104 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300, and Department of Chemistry, 108 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300.
Thomas E
TE
Mallouk
The Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802-6300, Department of Physics, 104 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300, and Department of Chemistry, 108 Davey Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802-6300.
M H W
MH
Chan