Growth of amorphous silicon nanowires via a solid–liquid–solid mechanism
Growth of amorphous silicon nanowires via a solid–liquid–solid mechanism
... 2000 Ž. Chemical Physics Letters 323 2000 224–228 www.elsevier.nlrlocatercplett Growth of amorphous silicon nanowires via a solid–liquid–solid mechanism H.F. Yan a , Y.J. Xing a, b , Q.L. Hang a , D.P. Yu a, ) , ... laser ablation of a powder target or directly from silane. In this Letter, we report that a- SiNWs can be controllably grown on a silicon substrat...
Ngày tải lên: 16/03/2014, 15:05
Controlled growth of oriented amorphous silicon nanowires via a solid–liquid–solid (SLS) mechanism
... process involves solid–liquid–solid phases, it is named as a SLS growth, which is in fact an analogy of the VLS mechanism. The growth process of the a- SiNWs via an SLS model is depicted schematically in ... interface; (d) ÿnal state of the SiNW growth. The smooth surface of the original substrate becomes rough at the end of the SiNW growth. via a SLS mechanism. Fi...
Ngày tải lên: 16/03/2014, 15:14
Growth of amorphous silicon nanowires
... The growth rate of the nanowires is estimated to be ca. 15 nm/min. The diameter of the nanowires is about 40 nm. A lot of nanowires are assembling along the same direction and are not parallel ... the silicon nanowires grown on a substrate deposited with AuPd alloy as catalyst for 1 min. (a) Low-mag- ni®cation images of silicon nanowires. (b) and (c) A magni®ed vi...
Ngày tải lên: 16/03/2014, 15:05
Direct growth of amorphous silica nanowires by solid state transformation of sio2 films
... Direct growth of amorphous silica nanowires by solid state transformation of SiO 2 films Ki-Hong Lee a, * , Hyuck Soo Yang a , Kwang Hyeon Baik a , Jungsik Bang a , Richard R. Vanfleet b , Wolfgang ... Sigmund a a Materials Science and Engineering Department, University of Florida, Gainesville, FL 32611, USA b Advanced Materials Processing and Analysis Center, University...
Ngày tải lên: 16/03/2014, 15:04
Polymer assisted synthesis of aligned amorphous silicon nanowires and their core shell structures with au nanoparticles
... Sheng-rong Yang a, * a State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China b Graduate School of the Chinese Academy of ... Polymer-assisted synthesis of aligned amorphous silicon nanowires and their core/shell structures with Au nanoparticles Xing-bin Yan a, b , Tao Xu a , Shan Xu a, b ,...
Ngày tải lên: 16/03/2014, 15:06
Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... Large-scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide Sanjay K. Srivastava a, Ã , P.K. Singh a , ... Sood a , D. Haranath a , Vikram Kumar a a National Physical Laboratory, Dr. K. S. Krishnan Marg, Pusa, New Delhi 110012, India b Department of Physics, Indian Institute of Techno...
Ngày tải lên: 16/03/2014, 15:18
Photoluminescence and growth mechanism of amorphous silica nanowires by vapor phase transport
... Physica E 31 (2006) 218–223 Photoluminescence and growth mechanism of amorphous silica nanowires by vapor phase transport Y. Yang a , B.K. Tay a , X.W. Sun a, Ã , H.M. Fan b , Z.X. Shen c a School of ... that the formation of SiO x is related to the reaction of ZnCl 2 and silicon. Vadadium or VO x evaporated from VO 2 acts as catalyst for silica nanowire to grow by VLS...
Ngày tải lên: 16/03/2014, 15:19
Amorphous silica nanowires grown by the vapor–solid mechanism
... 2003 Abstract Silica nanowires were synthesized by using silica nanoparticles as a growth catalyst using a gas composed of CH 4 and H 2 at 1050 °C. Silica nanoparticles provide silicon and oxygen ... amorphous nanowire. The profile resembles that of the standard EELS spectrum of amorphous silica. (c) A HRTEM photograph and a SAD pattern showing the amorphous characte...
Ngày tải lên: 16/03/2014, 15:03
Preparation and photoluminescence properties of amorphous silica nanowires
... of the nanowires at a diameter of 60±110 nm and a length up to hundreds micrometers. Besides most smooth-surface polyp- shaped nanowires, two other forms of nanowires, named amoeba-shaped and frog-egg-shaped ... energy (CAE) mode at 20 eV. Mg Ka (hm 1253:6 eV) radiation was employed as excitation source with an anode voltage of 12 KV and an emission current of 20 mA. PL sp...
Ngày tải lên: 16/03/2014, 15:07
Tailoring of amorphous siox nanowires grown by rapid thermal annealing
... nanoparticles act as a catalyst and are responsible for initiating the growth Fig. 1. Scanning electron microscopy images of (a) Pt nanoparticles on the surface after rapid thermal annealing at ... USA Received 9 October 2007; in final form 9 January 2008 Available online 16 January 2008 Abstract The growth of Pt-catalyzed SiO x nanowires by rapid thermal annealing at 900 °C is dem...
Ngày tải lên: 16/03/2014, 15:09