Báo cáo hóa học: " Synthesis of Glass Nanofibers Using Femtosecond Laser Radiation Under Ambient Condition" pptx

... spectra of laser- processed and unprocessed silica glass 1266 Nanoscale Res Lett (2009) 4:1263–1266 123 NANO EXPRESS Synthesis of Glass Nanofibers Using Femtosecond Laser Radiation Under Ambient ... report a characteristic growth of nanofi- bers of silica and borosilicate glass using femtosecond laser radiation at 8 MHz repetition rate and a pulse width o...

Ngày tải lên: 22/06/2014, 00:20

... femtosecond laser radiation under ambient conditions. Nanotechnology 2010, 21:225601. 18. Sivakumar M, Venkatakrishnan K, Tan B: Synthesis of Nanoscale Tips Using Femtosecond Laser Radiation under Ambient ... investigate the synthesis of Si/ Au-Si alloy nanoparticles aggregate with femtosecond laser irradiation of Au-coated silicon samples and the influence...

Ngày tải lên: 21/06/2014, 06:20

... (d), (e), and (f) Fig. 3 SEM images of the NiO nanofibers prepared using different concentrations of nickel nitrate solution: 0.6% (a); 3.0% (b) Fig. 4 EDX spectra of the NiO fibers (a) and ZnO fibers ... amount of gas products. The release of these gases from the core of the impregnated fibers to the outside could produce a large number of pores in the residual materials [33, 3...

Ngày tải lên: 22/06/2014, 01:20

... 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 because of ... for 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 u...

Ngày tải lên: 20/06/2014, 22:20

... top of a micro- scopeglassslideusingatapetopreventthemembrane from rolling up and solution penetration through the edges. Then, an aqueous solution prepared by mixing 10 g of FA and 0.04 g of ... selection of a pair of polymer and inorganic material * Correspondence: huanting.wang@monash.edu 1 Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australi...

Ngày tải lên: 20/06/2014, 23:20

... performed using XRD as a fun 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. ... observed Figure 5 MFM image of NdFeB nanofibrous structures formed upon irradiation of laser at 26 MHz pulse repetition rate. Figure 6 XRD pattern of NdFeB magnetic...

Ngày tải lên: 21/06/2014, 03:20

... nanostructure synthesis, the creation of two-dimensional freestanding nanostructures is of spe- cial interest. Most device applications entail the use of materials in the form of thin films. ... directly. This degree of transparency is similar to that of single-molecule thick materials [9]. The image of Figure 4 was taken using 20 kV elec- trons which have a mean free path 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 amorphous nano- humps apparently serve as seed sites for the self-assem- bly of CNT. Growth Mechanisms Whilst significant strides have been ma de in under- standing...

Ngày tải lên: 21/06/2014, 04:20

... the first types of NWs are rarely higher than the overgrown Ge layer, while for the second type of NWs, the part of the NWs that surpasses the overgrown Ge layer can reach a length of 2 μmwhenthe growth ... physical origin of the growth direction dependence on the NW length, we examined the sidewalls of both types of NWs, as shown in Figure 4. The <111>-oriented Si NWs con...

Ngày tải lên: 21/06/2014, 05:20

... into 200 ml of water and the pro duct wasvacuumdriedat40°Cfor60 h. The yield of azide- functionalized POSS obtained was 85%. Synthesis of MWNT-POSS nanohybrid by click coupling Coupling of an azide ... respectively. Thedifferenceinweightlossofalkyne-functionalized MWNTs and the MWNT-POSS nanohybrid is attributed to the presence of POSS molecules on the surface of the MWNTs [24,2...

Ngày tải lên: 21/06/2014, 05:20