Báo cáo hóa học: "Synthesis of Tin Nitride SnxNy Nanowires by Chemical Vapour Deposition" docx

... authors 2009 Abstract Tin nitride (Sn x N y ) nanowires have been grown for the first time by chemical vapour deposition on n-type Si(111) and in particular by nitridation of Sn containing NH 4 Cl ... assemblies of nanowires were also obtained at lower growth temperatures. Keywords Tin nitride Á Nanowires Á Synthesis Á Chemical vapor deposition Introduction Nitrides...

Ngày tải lên: 21/06/2014, 20:20

... image of close-packed AlN nanowires obtained by chemical conversion of the alumina nanowires shown in Fig. 2. Scale bar 2 lm Fig. 4 XRD pattern of the close-packed AlN nanowires obtained by chemical ... demonstrate a low-cost approach for fabricating densely packed AlN nanowires via a chemical conversion of Al 2 O 3 nanowires produced by a chemical etching of...

Ngày tải lên: 21/06/2014, 20:20

... cubic phase of NaYF 4 (JCPDS card, No. 77-2042). From the line broadening of the diffraction peaks, the crystallite size of the sample was determined to be approximately 18 nm using the Debye-Sche ... of the UCNPs on a large scale. Introduction The synthesis and spectroscopy of NaYF 4 :Yb 3+ ,Er 3+ upconversion nanoparticles (UCNPs) have attracted a tremendous amount of attention...

Ngày tải lên: 20/06/2014, 22:20

... Correspondence: huanting.wang@monash.edu 1 Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia Full list of author information is available at the end of the article He ... polymeric membranes are still restricted by the trade-off trend between gas permeability and selectivity which was suggested by Robson [8]. Additional limita- tion of the...

Ngày tải lên: 20/06/2014, 23:20

... rate of the femto- second laser results in generating smaller size magnetic nanofibers. The magnetic strength of the generated nanofibers can be controlled by changing the repet ition rate of the ... c- tion of femtosecond laser pulse repetition rate. Fig ure 6 shows XRD pattern of NdFeB magnetic nanofibers gener- ated by femtosecond laser at 26 MHz and a power of 15 W. The av...

Ngày tải lên: 21/06/2014, 03:20

... the formation of nanometer scale crystallites of HfO 2 .The second method involved a two-step heating process by which macroscopic, freestanding nanosheets of HfO 2 were formed as a byproduct during ... have been reports of interesting p roperties of HfO 2 when synthesized in the form of nanocrystals or nanorods [3-5]. Inducing dimen- sional constraints by reducing the size o...

Ngày tải lên: 21/06/2014, 04:20

... amount of synthesis r outes and variations were developed. Most of these were based on the use of catalyst particles, including the che- mical vapour deposition (CVD) route. CVD synthesis of CNT ... formation of CNT on the cathode in the arc-dis- charge route can occur wit hout catalyst addition as shown by the work of B acon in 1957 [47] and more recently by Iijima [1]. Des...

Ngày tải lên: 21/06/2014, 04:20

... Gösele U: On the formation of Si nanowires by molecular beam epitaxy. Int J Mater Res 2006, 97:1008. 10. Ross FM, Tersoff J, Reuter MC: Sawtooth Faceting in Silicon Nanowires. Phys Rev Lett 2005, ... Grandidier B, Stiévenard D, Coffinier Y, Boukherroub R, Larde R, Cadel E, Pareige P: Growth of Si nanowires on micropillars for the study of their dopant distribution by atom prob...

Ngày tải lên: 21/06/2014, 05:20

... EDX spectra of nanohybrid. (a) TEM images of MWNT-POSS nanohybrid and (b) EDX spectra of MWNT- POSS nanohybrid. Figure 5 XPS spectra of MWNT-POSS nanohybrid. (a) Wide scan spectra of MWNT-POSS ... the surface of the MWNTs. Thus, the IR spectra of MWNT-POSS nano- hybrid, featuring a azide peak of POSS molecules at 2107 cm, -1 completely disappeared, indicating the for- mation...

Ngày tải lên: 21/06/2014, 05:20

... Gösele U: On the formation of Si nanowires by molecular beam epitaxy. Int J Mater Res 2006, 97:1008. 10. Ross FM, Tersoff J, Reuter MC: Sawtooth Faceting in Silicon Nanowires. Phys Rev Lett 2005, ... Grandidier B, Stiévenard D, Coffinier Y, Boukherroub R, Larde R, Cadel E, Pareige P: Growth of Si nanowires on micropillars for the study of their dopant distribution by atom prob...

Ngày tải lên: 21/06/2014, 07:20