synthesis, growth mechanism and room-temperature blue luminescence emission of uniform wo3 nanosheets with w as starting material
synthesis, growth mechanism and room-temperature blue luminescence emission of uniform wo3 nanosheets with w as starting material
... Synthesis, growth mechanism and room-temperature blue luminescence emission of uniform WO 3 nanosheets with W as starting material Jinmin Wang, Pooi See Lee à , Jan Ma School of Materials ... is well consistent with the XRD result. Fig. 2a and b shows the FESEM image and TEM image of the as- synthesized WO 3 nanosheets. Uniform WO 3 nanosheets...
Ngày tải lên: 20/03/2014, 13:08
solvent-controlled synthesis of tio2 1d nanostructures growth mechanism and characterization
... white precipitates were recovered by centrifu- gation and washed several times with distilled water. An ultrasonic treatment of the products with 0.1 N HCl solution was carried out at pH$7, and ... S14S24S34S4. Fig. 1(b) shows the XRD patterns of the TiO 2 precursor and the two intermediate products obtained after washing the as synthesized products with water and ultrason...
Ngày tải lên: 20/03/2014, 13:08
ultra-sharp a-fe2o3 nanoflakes growth mechanism and field-emission
... sharpness of the nanoflake was measured by two ways in this work: one is the radius of curvature at the nanoflake tip and the other is the aspect ratio of L/FWHL (L is the length of nanoflake and FWHL is ... with a purity of 99.9% (Aldrich) were used as both reagents and substrates for the growth of α-Fe 2 O 3 nanoflakes. The cleaned Fe foil was heated on a hotplate under...
Ngày tải lên: 20/03/2014, 13:11
hydrothermal synthesis of uniform wo3 submicrospheres
... experiment were of analytical grade. The detailed synthesizing process was as follows: 10 g of Na 2 WO 4 ·2H 2 O was resolved in 50 ml of distilled water, and several milliliters of 6 M HCl aqueous ... After 10 min of stirring, the mixture was transferred into a Teflon container with capacity of 100 mL, which was filled with distilled water up to 80% of the total volume,...
Ngày tải lên: 20/03/2014, 13:04
Morphology and growth mechanism study of self assembled silicon nanowires synthesized by thermal evaporation
... [8] but with a growth time of 10 min. The short synthesis time was used so as to study the initial stage of SiNW growth. 3. Results and discussions Fig. 1 shows the SEM images of SiNWs and particles ... favoring the growth of SiNWs along one dimension. All these results agree well with the oxide-assisted growth model of SiNWs [18]. Acknowledgements The work describ...
Ngày tải lên: 16/03/2014, 15:06
Photoluminescence and growth mechanism of amorphous silica nanowires by vapor phase transport
... used was 325 nm and the average power was 10 mW. Laser beam was focused into a spot diameter below 1 mm on the specimen in the PL measurement. 3. Results and discussion Figs. 1(a) and (b) show the ... A p-type silicon trip with (1 0 0) orientation was also inserted into the quartz tube at downstream area with lower temperature (1090–700 1C) as the source of silicon as well as...
Ngày tải lên: 16/03/2014, 15:19
synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires
... film was oxidized during the process and became a-Fe 2 O 3 film with a thickness of 100 nm. Figure 2 shows the TEM images of an a-Fe 2 O 3 NW which was grown on the iron film with a thickness of 50 ... character- istics of the as- grown NWs were obtained using the CAFM (SEIKO SPA-400) system. A highly conductive polygon shaped tip with a height of 10 lm and a radius of 50...
Ngày tải lên: 20/03/2014, 13:08
Báo cáo khoa học: Methylcitrate synthase from Aspergillus fumigatus Propionyl-CoA affects polyketide synthesis, growth and morphology of conidia ppt
... propionate was used. Acyl-CoA was extracted and concentrations of acetyl-CoA were measured with citrate synthase, whereas propionyl-CoA was determined with methyl- citrate synthase. The total values were ... determination of growth inhibition when acetate was the main carbon source, except that the growth time was prolonged to 44 h and acetate (50 mm) as sole carbon source w...
Ngày tải lên: 23/03/2014, 15:20
GROWTH PERFORMANCE AND SPERM QUALITY OF STRESS NEGATIVE PIÉTRAIN BOARS AND THEIR HYBRIDS WITH DUROC
... quality. A season effect was observed on most of semen quality traits of pure stress- negative Piétrain as well as hybrid boars with different genetic constitution. Sperm concentration was lower in ... days) of age. The animals were weighted using an electronic balance at starting (BW60) and ending (BW225) dates and the average daily gain (ADG) of the corresponding gro...
Ngày tải lên: 28/08/2013, 11:59
An experimental investigation of performance and exhaust emission of a diesel engine fuelled with Jatropha biodiesel and its blends
... react with water and can form soap. Two to three gentle washing was required to remove unreacted remainder but it may leads to loss of esters. After washing two distinct layer formed with bottom ... hydrocarbon emission Figure 9 shows the variation of Unburned Hydrocarbon (HC) Emission with the BMEP. It was observed that the increasing the load increases HC emission and...
Ngày tải lên: 05/09/2013, 16:11