STUDY OF TUNGSTEN NANOWIRES GROWN BY FIELD EMISSON INDUCED METHOD

... Figure 3.3: Schematic of field emission induced growth for synthesis of tungsten nanowires Figure 3.4: 29 Schematic of set-up used for selective growth of nanowires by field emission Figure 3.6: ... procedures for the growth of tungsten nanowires in tungsten carbonyl ambient through a field- emission induced growth (FEIG) method Using this method, site3 spe...

Ngày tải lên: 11/09/2015, 10:18

... assisted SiOx nanowires grown after rapid thermal annealing at 900 °C for 60 s X-ray (EDS) analysis shows that the wire is mainly composed of Si and O, whereas the seed particle is constituted by Pt ... indicating the Si L23 ELNES of the nanowire and Si substrate In conclusion, SiOx nanowires have been successfully prepared by rapid thermal annealing with the use...

Ngày tải lên: 16/03/2014, 15:09

... categories, the State, Other public forests, Company forests and Private Tables 1-2 Table 1a and 2a Data on both area and volume for forest and other wooded land are based on data from the National ... systematic way to fit table Acquisition of land and land area There exist no information divided by industries of land area and acquisition or disposal of land At the be...

Ngày tải lên: 08/03/2014, 08:20

... CASE Social Media Survey • Summary Topline Findings • April 13, 2011 Overview of findings Background Slover Linett Strategies Inc and mStoner partnered with CASE for the second year in a row in ... the interest in this topic We are just beginning to mine the data from this second round of research and will be releasing a full white paper later in the ye...

Ngày tải lên: 08/03/2014, 19:20

... Following the initial stage, carbothermal decomposition of the silica nanoparticles by the carbon vapor produces a SiO vapor rich environment to form the silica nanowires by the VS mechanism ... Fig 2a, shows the nanowires grown from the seed particles The diameter of the nanowires ranges between 15 and 35 nm Process time did not affect the length and the...

Ngày tải lên: 16/03/2014, 15:03

... the temperature dependence of the morphology of SiNWs synthesized by laser ablation In this Letter, we present the results on this project Our results show that the morphology and diameter of ... B, the temperature dependence of the morphology and diameter of the SiNWs is similar to that by thermal evaporation, reported recently by Peng et al [14] I...

Ngày tải lên: 16/03/2014, 15:09

... orientation of the evolving Si-NWs In this study, we investigate the morphological evolution of Si-NWs on Si substrates grown by nanoscale Au–Si island- catalyzed rapid thermal chemical vapor deposition ... morphological and dimensional evolution of the Si-NWs on Si (0 1) and (1 1) surfaces grown 157 by using Au–Si nanoisland -catalyzed RTCVD For a given growth c...

Ngày tải lên: 16/03/2014, 15:15

... in 200-nm-thick silicon on insulator thin films [8–10] Simulation of the emission spectrum of an ehp by a convolution product of the density of states of the carriers affected by the Fermi–Dirac ... MEB images of the nanowires obtained by a CVD method The nanowires are copper catalyzed (a) As-grown nanowire with its catalyst droplet Its diameter is 120 nm (b) Image o...

Ngày tải lên: 16/03/2014, 15:19

... temperature to adjust the pore diameter and remove the barrier layer at the bottom of nanoholes 2.2 Synthesis of SiC nanowires The preparation apparatus for synthesis of SiC nanowires is a conventional ... image of SiC nanowires synthesized using the AAO template by thermal evaporation It reveals that large quantities of randomly distributed wire-like p...

Ngày tải lên: 16/03/2014, 15:21

... NanoLetters (2004) 433 [8] [9] [10 ] [11 ] [12 ] [13 ] [14 ] [15 ] [16 ] [17 ] [18 ] [19 ] [ 20] [ 21] [22] [23] [24] [25] 3037 J Kikkawa, Y Ohno, S Takeda, Appl Phys Lett 86 (2005) 12 310 9 X Zhao, C.M Wei, L Yang, ... proposed in Si NWs along the [0 1] direction [24] Since both p-bonded chain and p(2 Â 1) reconstructions on Si( 1 1) and Si(...

Ngày tải lên: 16/03/2014, 15:37

... measurements was 20 mW Care was taken to avoid the heating of the sample inadvertently to the point of changing its Raman spectrum Scattered light was analyzed using a micro-Raman system (Lambram ... instrument calibration errors and variations in the technique The assignment and comparison of the characteristic vibrations of the IR and Raman spectra are given in Tables I and II R...

Ngày tải lên: 20/03/2014, 13:05

... of microstructural and electrochromic properties of the nanostructured tungsten oxides with mesopores from the TMDD surfactantassisted process The crystallization status, surface morphology and ... surfactant was used as a structural- directed template, mesoporous tungsten oxide was obtained by the modified sol–gel route The microstructural properties of the as -prep...

Ngày tải lên: 20/03/2014, 13:08

... pure alumina becomes the core of the ANWs, which are surrounded by the byproducts of the reaction between alumina and the anodization or etching solution Conclusion ANWs synthesized by the chemical ... chemical etching of an AAM are found to have a two-oxide-layer structure The inner layer may be composed of relatively pure alumina and the outer layer of the by...

Ngày tải lên: 20/03/2014, 13:08

... Although there is an apparent ED between ES cells and EG cells, the ED of TS cells to ES cells (77) is greater than that of EG cells to ES cells (49), confirming the similarity of EG cells to ES cells ... Epigenetic study of embryonic stem cells Differences in DNA methylation profiles between ES and other stem cells Comparing ES cells with other stem...

Ngày tải lên: 23/03/2014, 07:20

... National Institute of Statistics and Demography (INSD), and Macro International Inc: Demographic and Health Survey Burkina Faso 2003 Calverton, Maryland (USA): Macro International Inc; 2004 Maternal ... surgical teams to perform caesarean sections led by obstetricians, general practitioners or clinical officers These data included annual salary, allowances, pension, trainin...

Ngày tải lên: 18/06/2014, 17:20