Si and siox nanostructures formed via thermal evaporation
Si and siox nanostructures formed via thermal evaporation
... Processing, Tsinghua University, Beijing 100084, China Received 18 April 2001; in ®nal form 13 June 2001 Abstract Various Si and SiO x x 1 to 2 nanostructures were formed via a thermal evaporation ... Si and SiO x nanostructures formed via thermal evaporation Yong-jun Chen * , Jian-bao Li, Jin-hui Dai Department of Materials Science and Engineering, State Key...
Ngày tải lên: 16/03/2014, 15:07
Silicon nanowires grown on si(1 0 0) substrates via thermal reactions with carbon nanoparticles
... the formation of Si nanowires by thermal evaporation of pure SiO [23] or mixed Si SiO 2 [24] powders. Similarly, in our case a possible reaction route leading to the nucleation of the Si nanostructures is ... taken collecting the Si 2p photoelectrons corresponding to elemental Si (Si) and SiO 2 (SiO2) components and C 1s photoelectrons (C). The left and right panels show...
Ngày tải lên: 16/03/2014, 15:08
Characteristics of siox nanowires synthesized via the thermal heating of cu coated si substrates
... considerable efforts have been placed on the synthesis and characterization of those materials over the past several years. Silicon (Si) and silica (SiO x ) nanostructures have attracted considerable ... visible region. Gaussian fitti ng analysis showed that the broad emission band was a superimposition of two major peaks at 428 and 469 nm, respectively. The similar blue emission with...
Ngày tải lên: 16/03/2014, 15:14
Morphology and growth mechanism study of self assembled silicon nanowires synthesized by thermal evaporation
... made of a Si core and a SiO 2 sheath. The one-dimensional growth of SiNWs is facili- tated by the SiO 2 sheath that con®nes the lateral growth of SiNWs, and the high absorptivity for Si O clusters ... SiNWs deposited on Si at about 1000°C. (a) SiNWs are connected and grown radially outward from the surface of the particle: and (b) some SiNWs show preferred growth directions from...
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
... crystalline Si embedded in SiO 2 outer shell was observed unlike some earlier reports on growth of Si nanowires by SiO evaporation [23], the concept that SiO first disproportionate into Si and SiO 2 to ... 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 on the...
Ngày tải lên: 16/03/2014, 15:18
Synthesis and photoluminescence property of silicon carbon nanowires synthesized by the thermal evaporation method
... high pure and expensive carbon nanotube or the hazardous and easily explosive silicon (carbon) precursor of SiH 4 or SiCl 4 (CH 4 ). In addition, the synthesized products were of low yield and with ... can occur, SiOðgÞþCOðgÞ!SiCðsÞþ2SiO 2 ðsÞ (9) Since SiC has much higher melting point than SiO 2 , the solidification of SiC occurs faster than that of SiO 2 and the amorphous, viscous S...
Ngày tải lên: 16/03/2014, 15:21
Temperature-Controlled Growth of Silicon-Based Nanostructures by Thermal Evaporation of SiO Powders
... metal- containing Si target 11-14 or metal-free Si/ SiO 2 target, 11,15 and thermal evaporation of Si- SiO 2 mixture 11,16,17 or SiO pow- ders. 11,18 Among these techniques, the thermal evaporation technique developed ... present study is SiO, we assume that the nucleation of the Si particle occurs on the Si substrate by decomposition of SiO described by 2SiO ) Si + SiO 2...
Ngày tải lên: 16/03/2014, 15:30
Tài liệu Báo cáo khoa học: Association of mammalian sterile twenty kinases, Mst1 and Mst2, with hSalvador via C-terminal coiled-coil domains, leads to its stabilization and phosphorylation doc
... apoptosis. J Biol Chem 277, 47991– 48001. 11 Lee KK, Ohyama T, Yajima N, Tsubuki S & Yonehara S (2001) MST, a physiological caspase substrate, highly sensitizes apoptosis both upstream and ... promotes apoptosis in conjunction with sal- vador and warts. Cell 114, 445–456. 21 Udan RS, Kango-Singh M, Nolo R, Tao C & Halder G (2003) Hippo promotes proliferation arrest and apopto- s...
Ngày tải lên: 19/02/2014, 06:20
Formation of silicon oxide nanowires directly from au si and pd–au si substrates
... 2006 Abstract Amorphous silicon oxide (SiO x ) nanowires were directly grown by thermal processing of Si substrates. Au and Pd–Au thin films with thicknesses of 3 nm deposited on Si (0 0 1) substrates ... heated Au deposited Si (0 0 1) [Au /Si] and Pd–Au deposited Si (0 0 1) [Pd–Au /Si] substrates in the tube furnace. As shown in Fig. 1(a),Au nanoislands with diameters of 10–80...
Ngày tải lên: 16/03/2014, 15:16
Silicon nanowires fabricated by thermal evaporation of silicon monoxide
... SiNWs. 20 30 40 50 60 70 80 500 1000 1500 2000 2500 3000 SiO 2 Al 2 O 3 Si ¦Ã-Al 2 O 3 Al(220) Si( 331) Si( 400) Si( 311) Si( 220) Si( 111) Intensity 2 Theta (degree) Fig. 3. XRD spectrum of the SiNWs ... crystalline 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 evapo...
Ngày tải lên: 16/03/2014, 15:21