Temperature-Controlled Growth of Silicon-Based Nanostructures by Thermal Evaporation of SiO Powders

. 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. results. 4. Discussion The results described in Section 3 show that, by thermal evaporation of SiO powders at 1350 °C for 5 h under 300 Torr ofa5%H 2- Ar gas mixture at a flow rate of 50 sccm, Si-contai...

Ngày tải lên: 16/03/2014, 15:30

. (2004) 278–281 Sulfide-assisted growth of silicon nano-wires by thermal evaporation of sulfur powders Junjie Niu a , Jian Sha a,b , Deren Yang a, * a State Key Lab of Silicon Materials, Zhejiang. 2004 Abstract Silicon nanowires (SiNWs) with a diameter of B20 nm were synthesized by the thermal evaporation of sulfur powders on silicon wafers. The source of the SiNWs came from the silicon substra...

Ngày tải lên: 16/03/2014, 15:21

. growth of SiO 2 nanowires is discussed on the basis of tiny SiO 2 cluster formation via direct reaction of SiO vapors with O 2 that subsequently acts as nucleation center for SiO 2 nanowire growth. ARTICLE. we report large-scale synthesis of pure silica (SiO 2 ) nanowires by a non-catalytic approach based on thermal evaporation of SiO under argon ambient with traces of oxygen. The proce...

Ngày tải lên: 16/03/2014, 15:18

. 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 (SiO) . The SiNWs were measured by transmission. structure [20]. Some SiO 2 and -Al 2 O 3 came from the decomposition of SiO and the Al 2 O 3 substrate, respectively. Fig. 1. TEM images of the SiNWs produced by thermal evaporation of SiO...

Ngày tải lên: 16/03/2014, 15:21

. results in the formation of SiNWs 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. and `mushroom'-shaped particles have been observed by electron microscopies. The SiNWs were synthesized by thermal evaporation of SiO powders without any metal cata- lysts. The SiNWs grow...

Ngày tải lên: 16/03/2014, 15:06

. mutation of Thr15 to Ala in the vicinity of the hydrophobic core induces a tighter binding of the cofactor in C. freundii TPL, thereby reducing the decomposition rate of the cofactor by a Pictet–Spen- gler. in 200 mL of LB medium containing 100 lgÆmL )1 of ampicil- lin. The cells were then suspended in 5 mL of NaCl ⁄ P i , mixed with an equal volume of Cellytic BÔ, treated for 30 min with 20 l...

Ngày tải lên: 07/03/2014, 00:20

... process of 3D flowerlike ZnO nanostructures: deposition of a PMMA layer on a GaN/LiALO 2 substrate, laser processing and hydrothermal growth of ZnO nano- structure. The right side shows a CCD image of ... hydrothermal growth was developed for the synthesis of flowerlike three-dimensional (3D) ZnO nanostructures. By controlling the parameters of hydrothermal syn- thesis (reac...

Ngày tải lên: 06/05/2014, 13:22

. minutes Fig. 4. Effect of backflush interval on the flux, MLSS of 8700 mg/l, TMP of 0.4 bar, CFV of 0.88 m/s, backflushing pressure of 1.5 bar and backflushing interval of 1 s. 22 23 24 25 26 0. bar Fig. 5. Effect of backflush pressure on the flux, MLSS of 8700 mg/l, TMP of 0.4 bar, CFV of 0.88 m/s, backflushing pressure of 1.5 bar and backflushing interval of 1 s. Main exper...

Ngày tải lên: 05/09/2013, 09:08

. 2). Discussion The inhibition kinetics of LDH, ADH and GAPDH of L. lactis ATCC 19435 investigated might be a result of various isozymes of each of these dehydro- genases because of the use of cell. influenced by any of the combinations of inhibitors. A similar conclusion can be drawn for the combination of ADP + NAD for ADH, whereas there was a slight increase in inhibi- tion of ADH by the. non...

Ngày tải lên: 29/03/2014, 08:20

. nanowires by heat-activated carbon with SiO powders using anodic aluminum oxide (AAO) template without any metal catalyst. SiO powders cannot react with activated carbon directly because of AAO. Schematic illustration of synthesized b-SiC nanowires. Fig. 2. SEM image of the nanoporous AAO template surface. Fig. 3. SEM image of b-SiC nanowires synthesized by thermal evaporation: (a) with. of SiC...

Ngày tải lên: 16/03/2014, 15:21