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 , ... 2009 PACS: 61.46.–w 81.07.–b Keywords: Silicon monoxide Silicon oxide nanowires Thermal evaporation Photoluminescence abstract A single step non-catalytic process based...

Ngày tải lên: 16/03/2014, 15:18

... 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 Electrical and Electronic ... 2006 Abstract Amorphous silica [SiO x ð1oxo2Þ] nanowires were fabricated on silicon substrate in an acidic environment by heating the mixture of ZnCl 2 , a...

Ngày tải lên: 16/03/2014, 15:19

... titanium and nitrogen were detected by the EELS in the nanowires. The carbon on the shell is supplied by thermal decom- position of CH 4 by nickel. No carbon shells were ob- served from the silica nanowires ... state reaction with silica (SiO 2 ) films on silicon wafers to provide silicon atoms into growing nanowires. The TiN layers induce the diffusion of silicon...

Ngày tải lên: 16/03/2014, 15:04

... Preparation and photoluminescence properties of amorphous silica nanowires X.C. Wu * , W.H. Song, K.Y. Wang, T. Hu, B. Zhao, Y.P. Sun, J.J. Du Laboratory of Internal Friction and Defects in ... 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, nam...

Ngày tải lên: 16/03/2014, 15:07

... silicon nanowires (SiNWs) with a diameter of ∼30 nm and length of tens of micrometers on Al 2 O 3 templates and silicon wafers were synthesized by the thermal evaporation of silicon monoxide ... synthesized large quantity of uniform crystalline SiNWs on Al 2 O 3 templates and silicon wafers by thermal evaporation of silicon monoxide (SiO) at 110...

Ngày tải lên: 16/03/2014, 15:21

... surface oxidation of nanowires. This suggests that the nanowires were composed of silicon and silicon oxide as sheath. Actually, some SiNWs could be oxidized to be silicon oxide nanowires because of the ... 2004 Abstract Silicon nanowires (SiNWs) with a diameter of B20 nm were synthesized by the thermal evaporation of sulfur powders on silicon wafers. The so...

Ngày tải lên: 16/03/2014, 15:21

... Temperature-Controlled Growth of Silicon- Based Nanostructures by Thermal Evaporation of SiO Powders Z. W. Pan, † Z. R. Dai, † L. Xu, ‡ S. T. Lee, ‡, * and Z. L. Wang* ,†,§ School of Materials Science and Engineering, ... the nucleation and growth of Si nanowires. The growth mechanism of Si nanowires from thermal evaporation of SiO powders, however, is not full...

Ngày tải lên: 16/03/2014, 15:30

... observation of large- area uniform double-sided nanorodarrays formedby self-assemblyand fusion of urchin-like nanostructures has been reported. Scheme 1 shows the schematics of the formation process of ... absorp- tion band gap energy. Two regions with a linear relationship are observed in the ranges of 3.5–4.2eV and 5.0–6.0 eV, respectively, giving two E g values of 2.77 eV a...

Ngày tải lên: 20/03/2014, 13:04

... manuscript editing and support. Conflict of interest The study was sponsored by Eli Lilly and Company. AS and RE are employees and shareholders of Eli Lilly and Company. RE and TW were employees of Eli Lilly and ... psychometric properties of the generic quality of life (QoL) scale Child Health and Illness Profile-Child Edition (CHIP-CE) by means of a combine...

Ngày tải lên: 12/02/2014, 19:20

... simple large- scale synthesis of very long aligned silica nanowires J.Q. Hu 1 , Y. Jiang, X.M. Meng, C.S. Lee, S.T. Lee * Department of Physics and Materials Science, Center of Super-Diamond and ... spectroscopy, and photoluminescence. The obtained SiO 2 nanowires had no metal contaminations, ultralong lengths of millimeters, and most diameters of $50 nm. The PL sp...

Ngày tải lên: 16/03/2014, 15:03