Structural investigation of silicon nanowires using GIXD and GISAXS evidence of complex saw tooth faceting

... Structural investigation of silicon nanowires using GIXD and GISAXS: Evidence of complex saw- tooth faceting Thomas David*, Denis Buttard, Tobias ... experiments reveal fine saw- tooth faceting of the sides of the nanowires. This fine saw- tooth faceting appears with alternating upward and down-ward orientations on each side of the nanowires, reflecting ... direction of small saw- tooth facets (ð111Þ and ð113Þ) and found that this saw- tooth faceting appeared onevery side of the nanowires rather than on one of the two sides.However, the faceting...

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

... Synthesis and characterization of silicon nanowires using tin catalyst for solarcells applicationMinsung Jeon⁎, Koichi KamisakoDepartment of Electronic and Information Engineering, ... silicon nanowires were synthesized for solar cells application. Voluminous silicon nanowires were fabricated on single crystalline silicon wafer. Optical reflectance and solar cell efficiency of ... thesynthesized silicon nanowires were explored. The reflectance of as-synthesized silicon nanowires wasobtained approximately 5% in the short wavelength region (λb 500 nm). A short circuit current of 2.3...

Investigation of au and in as solvents for the growth of silicon nanowires on si(1 1 1)

... the investigation of Au and In as solventsfor the growth of silicon nanowires on Si(1 1 1) via PVD bymeans of the well-known vapor–liquid–solid (VLS) me-chanism will be presented. Silicon nanowires ... tension of gold and indium and thesurface energy of silicon and silicon oxide.The diffusion coefﬁcients at temperatures around 550 1Cfor indium and gold on a clean Si(1 1 1) surface are 0.30 and ... electronic application of the wires.The main focus of this work is the behavior of gold and indium on a silicon substrate but also the different morphologies and distributions of the grown wires...

Temperature dependence of morphology and diameter of silicon nanowires synthesized by laser ablation

... rate of crystal silicon, outerlayer of silicon oxide will surround the crystal sil-icon. As a result, the growth of crystal silicon ceased and silicon oxide of outer layer coalescedtogether and ... Thepeculiar feature of the branch suggests that theremay exist a competitive growth between crystal silicon core and outer layer of silicon oxide. Whenthe forming rate of outer layer of silicon oxideexceeded ... nanoparticles at the tips of the nanowires only contained silicon and oxy-gen. Within the detection limit of EDS measure-ments (% 0:5%), no evidence of existence of Zr orany other elements...

Growth of silicon nanowires on UV structurable glass using self organized nucleation centres

... silica or silicon nitrideinstead of pure silicon nanowires. However, the nanowires and the photostructurable glass were expected to containmainly silicon and oxygen. Therefore, a direct measure-ment ... amounts of silicon and oxygen. Additionalpeaks for Ga, N and Au occurred due to the substrate and growth process. A carbon peak could be associated with acontamination of the surface due to the handling ... evaluation of theEDX analysis gives a content of approximately 90.4 and 4.9 at% for silicon and oxygen, respectively. Though thegrowth process leads to a pure silicon nanowire, a thinlayer of natural...

Investigation of capacitive humidity sensing behavior of silicon nanowires

... Investigation of capacitive humidity sensing behavior of silicon nanowires Huilin Li, Jian ZhangÃ, BaiRui Tao, LiJuan Wan, WenLi GongDepartment of Electronic Engineering, ... thatthe silicon nanowires have been prepared on the substrate. Theyare aligned perpendicularly to the bulk silicon substrate and theiraverage length is about 80mm. And the length of SiNWs ... chemically cleaned silicon wafers were putinto the etchant. The etching time was kept $60 min in this study.Fig. 1(a) is the top-view SEM picture of silicon nanowires as-received and (b) is the...

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 silicon phases. This potential consists of sums of two- and three-bodyinteraction ... pentagonal and hexagonal SiNWs along the/110S direction. Justo et al. [24] reported classical moleculardynamic simulations of silicon nanowires of various shapes and orientations. Menon [20] and Ponomareva...

Tài liệu Báo cáo khóa học: Quantitative analysis, using MALDI-TOF mass spectrometry, of the N-terminal hydrolysis and cyclization reactions of the activation 2 process of onconase pdf

... reducing it oncepuriﬁed. By using the puriﬁed recombinant protein, theconversion of reagents and products of the exopeptidase-catalyzed hydrolysis of Met1 and cyclization of Gln1 topyroglutamyl ... solvent of the matrix, and 0.5 lL of the mixturewas immediately applied to a sample probe spot.Cyclization reaction as a function of pH and temperatureIn order to determine the effect of pH and ... h.Fig. 2. Comparison of the hydrolysis reaction as a function of denaturingagent and pH. (A), (B) and (C): (d), (s )and( .) correspond toguanidinium chloride concentrations of 0 , 2 and 3M, respectively.Hydrolysis...

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. ... to the (1 1 1) planes of silicon. The crystallinity of the nanowires is con-siderably higher when only argon was used instead of a mixture of argon and hydrogen. The role of hydrogen in promoting ... 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...

Growth kinetics of silicon nanowires by platinum assisted vapour–liquid–solid mechanism

... Vertically-aligned Si nanowires using Pt. Si nanowires using Ptare longer than those using Au. (c) HRTEM image of Si nanowire using Au. (d) HRTEM image of Si nanowire using Pt. Both were single ... catalyst(Fig. 1e and f). Note that a Si-rich globule was formed when using Fig. 1. Synthesis of Si nanowires using Au and Pt as catalysts. (a) Vertically-aligned Si nanowires using Au. (b) Vertically-aligned ... crystal. (e) EDS line mapping of Si nanowires using Au catalyst. (f) EDS line mapping of Si nanowires using Pt catalyst. (g) HRTEM image of interfaces between the globule and nanowire grown with Pt....

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