Hybrid nanocomposite of fe nanoparticles on sio2 nanowires by sublimation route

... the surface of SiO 2 NWs by the flowing mixture of Ar and H 2 . Fe nuclei form by the deposition and segregation of Fe atoms, and further growth of Fe NPs proceeds with the continuous supply of Fe atoms ... to prepare a hybrid nanocomposite with Fe NPs on the surface of SiO 2 NWs. Based on a detailed investigation on the morphology and distribution of Fe...

Ngày tải lên: 16/03/2014, 15:10

... formed by carbon atoms diusing into the Si NWs, CNTs could not be formed very well on the surface of nanowires because of both the volume change of the nanowires and breaking of the carbon network ... sheathed on the nanowires. When the substrate temperature was relatively high (b1100°C), a mixture of graphitic carbon and SiC nanowires was formed because of both the...

Ngày tải lên: 16/03/2014, 15:04

... high carbon content is due to the existence of carbon nanoparticles on the surface of nanowires. The existence of carbon nanoparticles on the surface of nanowires is also identified by Raman measure- ment ... result of SEM observation, smooth surface was observed from TEM image of the nanowires synthesized under the condition-2. Meanwile, a lot of hemispheric depos...

Ngày tải lên: 16/03/2014, 15:08

... the thickness of the ONWs is of the order of several ångström, the observed LDOS is a convolution of the LDOS of the SiNWs and that of the adsorbed PQ aggregates. Therefore, the contribution of the LDOS of ... organic nanostructures by chemisorption of specific molecules on silicon nanowires. STM data demonstrate that depending on the molecular functional groups, the m...

Ngày tải lên: 16/03/2014, 15:35

... Journal of Science, Mathematics - Physics 25 (2009) 1-7 1 Effect of the preparation conditions on the properties of Fe- Pt nanoparticles produced by sonoelectrodeposition Nguyen Hoang Luong* ... composition of Fe- Pt particles can be controlled by changing the concentration of Fe and Pt ions in the electrolyte and the deposition voltage. The particle size can be ad...

Ngày tải lên: 13/02/2014, 03:20

... 98.8% Cr(VI) concentration was removed by iron nanoparticals, while only 24.75% Cr(VI) concentration was removed by iron powder. 4. Conclusion The removal of Cr(VI) by Fe 0 nanoparticles ... Effect of iron nanoparticles concentration Experimental conditions pH = 4-5, Cr(VI) concentration = 5.0mg/l, changing iron nanaparticle concentration from 0.1 g/l to 0.3g/l. The...

Ngày tải lên: 14/03/2014, 10:20

... a-SiONW growth, and expedite the reduction of TiN by supply- ing extra hydrogen by thermal decomposition of Fig. 1. FESEM photographs of a-SiONWs nanowires grown on the substrates after annealing at ... state reaction with the silica (SiO 2 ) films on silicon wafers to provide silicon atoms into growing nanowires. The TiN layers induce the diffusion of silicon and oxygen to t...

Ngày tải lên: 16/03/2014, 15:04

... one-dimensional Si nanowires SiNW have wx attracted much attention 1–4 . As the miniaturiza- tion of present microelectronics continues, future nanoelectronics need nanoscale functional semicon- ductor ... small amount of nanoparticles. High-resolution transmission electron microscopy shows that the nanowires are crystalline Si nanowires and the nanoparticles are cubic SiC. The i...

Ngày tải lên: 16/03/2014, 15:08

... electron and hole injection. The sample configuration, contact geometry and charge distribution are demonstrated in Fig. 5. The preparation started from an SOI wafer with a silicon film thickness of ... Schottky contacts on the end surfa ces of silicon wires were prepared on SOI material by electron beam lithography. By using the substrate as a back-gate, the potential distribution...

Ngày tải lên: 16/03/2014, 15:14

... Effect of surface concen- tration on secondary and tertiary conformational changes of lysozyme adsorbed on silica nanoparticles. Biochim Biophys Acta 1784, 1694–1701. 29 Karlsson M, Martensson ... recogni- tion, the ionic strength of the medium would be expected to have an effect on the binding [43]. To study the effect of ionic strength on the conformation of ToxRp in the...

Ngày tải lên: 23/03/2014, 03:20