Highly efficient and stable photoluminescence from silicon nanowires coated with sic
Highly efficient and stable photoluminescence from silicon nanowires coated with sic
... Highly ecient and stable photoluminescence from silicon nanowires coated with SiC X.T. Zhou, R.Q. Zhang, H.Y. Peng, N.G. Shang, N. Wang, I. Bello, C.S. Lee, S.T. Lee * Department of Physics ... can be coated with b -SiC so as to integrate the various advantages of the SiC with the important nano- scaled materials in order to advance its applica- tions in photophy...
Ngày tải lên: 16/03/2014, 15:05
Ultrafine and uniform silicon nanowires grown with zeolites
... Ultrafine and uniform silicon nanowires grown with zeolites C.P. Li a , X.H. Sun a,b , N.B. Wong a,b , C.S. Lee a , S.T. Lee a, * , Boon K. Teo c,1 a Department of Physics and Materials Science, ... crystalline silicon core and a thick amorphous silicon dioxide outer layer. The diam- eters of the Si cores range from 1 to 5 nm, with the dominant diameter of 3 nm. These Si co...
Ngày tải lên: 16/03/2014, 15:09
Oriented silicon nanowires on silicon substrates from oxide assisted growth and gold catalysts
... Oriented silicon nanowires on silicon substrates from oxide-assisted growth and gold catalysts Yuan Yao a , Fanghua Li b , Shuit-Tong Lee a, * a Center of Super-Diamond and Advanced Films (COSDAF) and ... Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China b Institute of Physics and Center for Condensed Ma...
Ngày tải lên: 16/03/2014, 15:06
Morphology and growth mechanism study of self assembled silicon nanowires synthesized by thermal evaporation
... vapor-phase silicon atoms and/ or sili- con oxide clusters. When the Ni(Fe)Si 2 droplet reaches supersaturation after dissolving sucient silicon atoms from the gas phase, precipitation of silicon nanowires ... indirect band gap of $1.1 eV and a small exciton binding energy ($15 eV). In contrast, silicon nanowires (SiNWs) of a few na- nometers in diameter have shown unusual p...
Ngày tải lên: 16/03/2014, 15:06
Polymer assisted synthesis of aligned amorphous silicon nanowires and their core shell structures with au nanoparticles
... SiNWs scratched off from the substrate. Two peaks at 302 and 520 cm À1 were observed which correspond to 2TA and TO modes of silicon, respectively. X. Yan et al. / Chemical Physics Letters 397 (2004) ... SiNWs wrapped with Au nanoparticles was simply fabricated as well. The analytic results of the morphology and microstructure confirmed the orientation and the amorphous nature of t...
Ngày tải lên: 16/03/2014, 15:06
Si nanowires grown from silicon oxide
... 1999 Ž. Chemical Physics Letters 299 1999 237–242 Si nanowires grown from silicon oxide N. Wang, Y.H. Tang, Y.F. Zhang, C.S. Lee, I. Bello, S.T. Lee ) Center of Super Diamond and AdÕanced Films, ... powder mixture of silicon and SiO . 2 Transmission electron microscopy showed that, at the initial nucleation stage, silicon monoxide vapor was generated from the powder mixture a...
Ngày tải lên: 16/03/2014, 15:08
Temperature dependence of morphology and diameter of silicon nanowires synthesized by laser ablation
... between crystal silicon core and outer layer of silicon oxide. When the forming rate of outer layer of silicon oxide exceeded the growth rate of crystal silicon, outer layer of silicon oxide will ... con- tained Si, Mg, Ge, and O (oxygen came from the outer layer of the tip), as shown in Fig. 4. From Fig. 3. HRTEM image of the interface between the crystal silicon and amo...
Ngày tải lên: 16/03/2014, 15:09
Cambridge.University.Press.Allegories.of.Union.in.Irish.and.English.Writing.1790-1870.Politics.History.and.the.Family.from.Edgeworth.to.Arnold.Oct.2000.pdf
... dominance and their subject status. Trollope’s doubled claim to ‘‘know’’ the Irish, derived from his position within Ireland as a colonial functionary and his literary endeavor to represent Ireland ... larger fortunes with their brides, and fathers considered themselves not imprudent in saddling their properties with burdens proportionably heavy; dowers and jointures were arrang...
Ngày tải lên: 21/09/2012, 10:39
Removal of Nutrients, Organic Matter and Heavy Metals from Paddy Field Drainage by Charcoal
... concentration, the coefficient of variation (CV) in TOC and TN was 0.12 and 0.13 at IN, and 0.13 and 0.15 at OUT, respectively. These variations did not significantly change before and after passing ... correlation coefficients of the concentration at IN and OUT, and the reduction rates among TOC, nutrients and metals are shown in Table 4, 5 and 6. Table 4 - Correlation...
Ngày tải lên: 05/09/2013, 09:38
Detection of bacteria and enteric viruses from river and estuarine sediment
... river from various contamination sources settle on river and estuarine sediment, and that the sediments may protect the bacteria from rapid decay as suggested by Gerba and McLeod (1976) and Anderson ... sediment in the Takagi River and it is suggested that more reliable and sensitive preparation method for RNA viruses in sediment with high proportion of silt and clay...
Ngày tải lên: 05/09/2013, 10:15