simple and rapid synthesis of a-fe2o3 nanowires under ambient conditions

... Simple and Rapid Synthesis of α-Fe2O3 Nanowires Under Ambient Conditions Albert G. Nasibulin1（）, Simas Rackauskas1, Hua ... propose a simple method for the efficient and rapid synthesis of one-dimensional hematite (α-Fe2O3) nanostructures based on electrical resistive heating of iron wire under ambient conditions. ... α-Fe2O3 nanowires were synthesized on a time scale of seconds at temperatures of around 700 °C. The morphology, structure, and mechanism of formation of the nanowires were studied by scanning and...

A simple large scale synthesis of very long aligned silica nanowires

... simple large-scale synthesis of very long alignedsilica nanowires J.Q. Hu1, Y. Jiang, X.M. Meng, C.S. Lee, S.T. Lee*Department of Physics and Materials Science, Center of Super-Diamond and ... spectroscopy, and photoluminescence. The obtained SiO2 nanowires had no metal contaminations, ultralong lengths of millimeters, and most diameters of $50 nm. The PLspectra of the SiO2 nanowires ... pyrolysis of mixture of Si and SiO powders. Recently, Pan et al. [8] have devel-oped a molten gallium-catalyzed vapor–liquid–solid (VLS) process for the growth of bundles of highly aligned and packed...

Carbon assisted synthesis of silicon nanowires

... thearea of inorganic nanowires and nanotubes in thelast few years [1–3]. Thus, nanowires of a variety of inorganic materials including oxides, nitrides and chalcogenides have been synthes ized and characterized. ... Carbon-assisted synthesis of silicon nanowires Gautam Gundiah, F.L. Deepak, A. Govindaraj, C.N.R. Rao*Chemistry and Physics of Materials Unit and CSIR Centre of Excellence in Chemistry,Jawaharlal ... uniformwidth of 200 nm, and a length of a few microns.Careful studies of the TEM images and electrondiﬀraction data may unravel the nature of thejunction.In Fig. 1c, we show the SEM image of theSiNWs...

Synthesis of silicon nanowires after hydrogen radical treatment

... Synthesis of silicon nanowires after hydrogen radical treatmentMinsung Jeon⁎, Koichi KamisakoDepartment of Electronic and Information Engineering, Tokyo University of Agriculture and ... the well-known nanotubes and nanowires, have been utilized extensively in the various ﬁelds of nanoscale optical and electronic devices [2–5]. In particular, silicon nanowires (SiNWs) are irresistible ... 4(b))indicates that the particle is composed of Si and In. Here, the detected O and Cu are theeffect of the TEM copper grid. The indium nanoparticle located on top of thesynthesized SiNW suggests that...

Molecular dynamics simulations of the tensile and melting behaviours of silicon nanowires

... simulations of the tensile and melting behaviours of silicon nanowires Yuhang JingÃ, Qingyuan Meng, Wei ZhaoDepartment of Astronautical Science and Mechanics, Harbin Institute of Technology, ... interatomicpotential consists of two- and three-body interaction terms and were originally ﬁtted to describe the crystalline and liquid siliconphases. This potential consists of sums of two- and three-bodyinteraction ... most of the work, the Quantum mechanics methods were used, and theattentions were mainly paid on the microstructural and electronicproperties of the SiNWs. The mechanical strength of the nanowires plays...

Structures and electronic properties of si nanowires grown along the [1 1 0] direction role of surface reconstruction

... character can be understood interms of the projection of energy band in bulk Si and conﬁnementeffect: the conﬁnement decreases the energy of HO states and in-creases the energy of the LU states, ... potential of an Si (H) atom, nSi(nH) is the number of Si(H) atoms, and ezis the zero-point energy of Si–H vibrations. Thevalue of lSiis equal to that in bulk Si and the zero of lHis ... temperature and pressure effects of hydrogen ambient. Furthermore, effects of sur-face reconstruction of nanowire facets on the electronic structuresare examined from the calculated band structures and...

large-scale hydrothermal synthesis of wo3 nanowires in the presence of k2so4

... WO3; Nanowires; K2SO41. IntroductionOver the past few years, much effort has been devoted to the synthesis of semiconductor nanowires, nanorods, and nanobelts,because of the importance of understanding ... withdiameter of about 100 nm. With the addition of 15 g K2SO4, themorphologies of synthesized WO3shown in Fig. 4b are the mixture of nanorods and nanoparticles. Nanorods and nanowires were ... the content of the assisted K2SO4plays an importantrole in the specific morphologies of WO3. No nanowires of WO3couldbe obtained without K2SO4, and the purity of the nanowires onlydepends...

Polymer assisted synthesis of aligned amorphous silicon nanowires and their core shell structures with au nanoparticles

... of the SiNWs, and the high dispersion of Au nanoparticles on the surface of the SiNWswithout any aggregation. The formation of the SiNWs was explained on the basis of the reaction of carbon with ... spectra of the aligned nanowires (a) and the particle-linked wires (b).Fig. 3. (a) Low magniﬁcation TEM image of SiNWs; (b) TEM image of a single particle-linked wire; (c) TEM image of a single ... resultconﬁrms that the nanowires are composed of silicon.In order to study the growth mechanism of SiNWs inour synthesis system, two additional experiments werecarried out under similar conditions: (1)...

Synthesis of large scale sic–sio2 nanowires decorated with amorphous carbon nanoparticles and raman and PL properties

... source for synthesis of this nanostructure. Strong enhancement of blue emission band and appearance of a new yellow emission band were observedfrom this novel nanostructure. Structure and Raman ... agreement with the results of XRD and TEM. Two peaks centered at $1337 and $1592 cmÀ1oftencalled as D- and G-band, respectively conﬁrm the existence of car-bon [22–25]. The D-band is known as to ... 5, spectrum (a) and (b) were recorded from two kinds of nanowires. Strong enhancement of blue emission band at about482 nm (2.58 eV) and appearance of a new yellow emission bandcentered at...

Synthesis and characterization of silicon nanowires using tin catalyst for solar cells application

... at λb 700 nm [20]. The difference of the reflectancemight be the effect of synthesis conditions, such as thickness of metal film and SiH4gasflow. The reduction of reflectance is very helpful to ... performance.Therefore, further reduction of the reflectance will be expected from the optimization of the synthesis conditions of SiNWs.For analysis of the electrical properties, the I–V curve of the fabricated SiNWs ... Synthesis and characterization of silicon nanowires using tin catalyst for solarcells applicationMinsung Jeon⁎, Koichi KamisakoDepartment of Electronic and Information Engineering,...

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