title: Standing [111] gold nanotube to nanorod arrays via template growth.
abstract: Standing [111]-oriented crystalline gold nanotube (AuNT) and nanorod (AuNR) arrays using electrochemical deposition through template growth are reported. Segments of single crystal and bamboo-like crystalline AuNR arrays with growing direction of [111], having a diameter of 100-150 nm and a length of 10 µm, standing perpendicular to Ti metal foil substrates, are synthesized. The as-synthesized AuNTs and AuNRs are characterized by powder and five circle x-ray diffractometry, UV-visible molecular absorption spectrometry, field emission scanning electron microscopy, and transmission electron microscopy. AuNRs and AuNTs are formed by starting with a tube and the wall of the tube gets progressively thicker and eventually sealed up to form nanorods. Optical absorption at 548 and 578 nm wavelength for gold nanotubes and nanorods, respectively, caused by the transverse (width) mode is identified.
authors: Department of Chemistry, Center for Nanotechnology, Chung-Yuan Christian University, Chungli 320, Taiwan, Republic of China.
authors: Hong-Wen
authors: HW
authors: Wang
authors: Chain-Fang
authors: CF
authors: Shieh
authors: His-Yi
authors: HY
authors: Chen
authors: Wei-Chuan
authors: WC
authors: Shiu
authors: Bryan
authors: B
authors: Russo
authors: Guozhong
authors: G
authors: Cao