Direct growth of amorphous silica nanowires by solid state transformation of sio2 films
Direct growth of amorphous silica nanowires by solid state transformation of sio2 films
... Direct growth of amorphous silica nanowires by solid state transformation of SiO 2 films Ki-Hong Lee a, * , Hyuck Soo Yang a , Kwang Hyeon ... 2003 Published online: 5 December 2003 Abstract Amorphous silica nanowires (a-SiONWs) were produced by direct solid state transformation from silica films. The silica nanowires grow on TiN/Ni/SiO 2 /Si substrat...
Ngày tải lên: 16/03/2014, 15:04
Photoluminescence and growth mechanism of amorphous silica nanowires by vapor phase transport
... that the growth process of amorphous silica nanowires is catalyst-assisted. EDX was applied to examine the chemical composition of the as-grown nanowires. Fig. 3(a) shows the EDX spectrum of the ... at% of O, 41.87 at% of Si, 8.66 at% of V, 0.74 at% of Zn, and no Cl, for the catalyst tip in Fig. 2(b), and 60.28 at% of O, 39.40 at% of Si, 0.32 at% of V, and no Zn o...
Ngày tải lên: 16/03/2014, 15:19
Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... agglomerated clusters consisting of high density of nanowires. The magnified view of a single cluster is depicted in the inset of Fig. 2(d). These observations suggest that growth of nanowires in the present ... (PL) property of the as-deposited material has been investigated and the growth of SiO 2 nanowires is discussed on the basis of tiny SiO 2 cluster formation vi...
Ngày tải lên: 16/03/2014, 15:18
Preparation and photoluminescence properties of amorphous silica nanowires
... properties of amorphous silica nanowires X.C. Wu * , W.H. Song, K.Y. Wang, T. Hu, B. Zhao, Y.P. Sun, J.J. Du Laboratory of Internal Friction and Defects in Solids, Institute of Solid State Physics, ... that of oxidized Si nanowires [16]. The growth process of the nanowires can be explained by the vapor±liquid solid (VLS) mech- anism, since little droplets can be s...
Ngày tải lên: 16/03/2014, 15:07
Amorphous silica nanowires grown by the vapor–solid mechanism
... Conclusions Silica nanowires were synthesized by VS mechanism by using silica nanoparticles as a growth catalyst. Silica nanoparticles provide sili- con and oxygen atoms for the formation of the nanowires, ... 501 formation of the nanowires is accomplished in a short period of after starting the synthesis. Fig. 4b shows a typical growth pattern of the silica nano...
Ngày tải lên: 16/03/2014, 15:03
Growth of amorphous silicon nanowires via a solid–liquid–solid mechanism
... and growth of SiNWs through the liquid– Ž. Ž. wire LS interface; d final state of SiNW growth. The smooth surface of the original substrate becomes rough at the end of SiNW growth. tens of nanometers. ... 224–228 www.elsevier.nlrlocatercplett Growth of amorphous silicon nanowires via a solid liquid solid mechanism H.F. Yan a , Y.J. Xing a,b , Q.L. Hang a , D.P. Yu a...
Ngày tải lên: 16/03/2014, 15:05
Growth of amorphous silicon nanowires
... silicon nanowires are of an amorphous state and some of nanowires appear to bifurcate in the vertically growth process. The eect of H 2 gas etchings on the catalytic size and the eect of catalytic ... growth of the nanowires. We think that vapor±liquid solid (VLS) mech- anism accounts for the amorphous state silicon nanowires growth in our experiment. The me...
Ngày tải lên: 16/03/2014, 15:05
Iron catalytic growth of prism shaped single crystal silicon nanowires by chemical vapor deposition of silane
... catalyst for the growth of silicon nanowires (SiNWs). Transmission electron microscopy studies of the materials showed that the nanowires have a diameter of 50–70 nm and a length of several micrometers. ... nanowires have excellent single-crys- tal characteristics. Both the CNTs and Fe play a key role in the growth process of the SiNWs. A growth mechanism was proposed fo...
Ngày tải lên: 16/03/2014, 15:06
Tailoring of amorphous siox nanowires grown by rapid thermal annealing
... al. reported the fabrication of silica nanowires by solid state diffusion of silicon from the silica films [8]. The growth of SiO x nanowires via VLS mechanism or solid state diffusion is us ually ... nanowire growth. In this Letter, we demonstrate the growth of Pt-catalyzed SiO x nanowires by a simple procedure, i.e., rapid thermal annealing. The effect of...
Ngày tải lên: 16/03/2014, 15:09
The chart below shows the amount of leisure time enjoyed by men and women of different employment status
Ngày tải lên: 04/10/2012, 10:02