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Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays

Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays

Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays

... Physica E 30 (2005) 169–173 Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays Chun Lia, Guojia Fanga,Ã, Su Shenga, Zhiqiang ... field electron emission is one of the most important and promising applications of nanoscale tubes or wires with sharp tip arrays. For field electron emission devices, the desired tip diameter of ... first-order Raman peak of the silver cap-removed SiNW arrays shows a downshift and asymmetric broadening due to the phonon quantum confinement effects, and intensity enhancement. Field electron emission...
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synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires

synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires

... wastoo high.Investigating the electronic properties of 1D nanoma-terials can reveal the relationship between the electronic properties of emitters and the FE properties of the device.In addition, ... field of 3.3 V/lm and a large current density of 10-3A/cm2(under an applied field of about 7 V/lm) canbe obtained using optimal factors of DNWsin the cathode.Keywords Nanowires Á Field emission ... with a diameter of 15 nm and a length of 800 nm was embedded in the PR.Fig. 2 (a) TEM image of an a-Fe2O3NW, (b) HR-TEM image of thea-Fe2O3 nanowire, and the SAED pattern of the a-Fe2O3NW...
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Báo cáo khoa học: Determination of the redox potentials and electron transfer properties of the FAD- and FMN-binding domains of the human oxidoreductase NR1 doc

Báo cáo khoa học: Determination of the redox potentials and electron transfer properties of the FAD- and FMN-binding domains of the human oxidoreductase NR1 doc

... deter-mination of both thermodynamic and kinetic properties of NR1, and as we have shown for CPR and P450 BM3(23,24,28) the properties of the flavin binding domains of NR1 are likely to mimic the redox properties ... hydride and electron transfer. J. Biol. Chem. 276, 29163–29170.Ó FEBS 2003 Redox properties of human NR1 (Eur. J. Biochem. 270) 1175Determination of the redox potentials and electron transfer properties ... (CPR). The FAD/NADPH- and FMN-bindingdomains of NR1 have been expressed and purified and theirredox properties studied by stopped-flow and steady-statekinetic methods, and by potentiometry....
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Tài liệu Báo cáo khoa học: Toggle switches, pulses and oscillations are intrinsic properties of the Src activation/deactivation cycle doc

Tài liệu Báo cáo khoa học: Toggle switches, pulses and oscillations are intrinsic properties of the Src activation/deactivation cycle doc

... 6. Control of the period and amplitude of Src oscillations bythe activities of the activatory phosphatase RPTP and inhibitorykinase Csk. Dependence of the oscillation amplitude (A) and period(B) ... coexistence of oscillations (limit cycle) and a stablesteady state implies subcritical Hopf bifurcation and the appearance of an unstable limit cycle. The unstable and stable limit cycles collide and ... large activities of Csk and RPTP, demonstrating robustness of thebistable behavior.Oscillations occurring within regions 3 and 4 corre-spond to lower concentrations of active Csk and RPTPthan...
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Tài liệu Báo cáo Y học: Electrochemical, FT-IR and UV/VIS spectroscopic properties of the caa3 oxidase from T. thermophilus docx

Tài liệu Báo cáo Y học: Electrochemical, FT-IR and UV/VIS spectroscopic properties of the caa3 oxidase from T. thermophilus docx

... oxidases is presented and on this basis the contributions of the reorganization of thepolypeptide backbone, of individual amino acids and of thehemes c, a and a3upon electron transfer to/from ... electrochemical,UV-VIS and FT-IR spectroscopic properties of the caa3-oxidase from T. thermophilus in the presence and absence of cyanide, and compare the observed properties to previousreports on members of ... oxidized and the negativesignals with the reduced form of the enzyme. For thereduced form, the Soret band can be observed at 415 and 442 nm, and for the oxidized form at 403 and 422 nm. Theb–band...
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Role of an electrolyte and substrate on the stability of porous silicon

Role of an electrolyte and substrate on the stability of porous silicon

... exhibits superior properties compared to porous silicon formed using HF:H2O2-based electrolyte at the same current density, time of anodization and type of substrate. Porous silicon films formed ... fabrication of porous silicon viz, HF, ethanol, H2O2 and HNO3[1,11,12]. HF is mainly used for thedissolution of silicon, ethanol is basically used toreduce the surface tension of the electrolyticmixture ... have demonstrated by means of high-resolution XRD studies that texturization of silicon surface is an effective method for theformation of stable and thick porous silicon films[13]. In this...
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Tripathy, optical properties of nano silicon

Tripathy, optical properties of nano silicon

... nanometer sized crystalline silicon. The broad Raman band resembles that of density -of- state spectrum in amorphous silicon and indicates the presence of amorphous silicon like structure in the ... recombination of the localized electrons trapped by the surface states located within the band gap of porous silicon with its partner in the valence band and the radiative recombination of photon-excited ... inspite of intensive studies by Kanemitsu (1995) and John and Singh (1995), no conclusive argument has been given on the mecha-nisms of efficient light emission from porous silicon and related...
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Thermal properties of the vernacular buildings envelopes: the case of the

Thermal properties of the vernacular buildings envelopes: the case of the "Sassi di Matera" and "Trulli di Alberobello

... Department of Engineering and Environmental Physics, Faculty of Architecture, University of Basilicata, Italy. 2 Department of Architecture and Town Planning, Faculty of Engineering, Polytechnic of ... Polytechnic of Bari, were performed on some samples of calcarenite sandstone and calcareous stone of Fasano. The goal of the laboratory tests was to experimentally find the thermophysical properties of ... measurement of thermal conductance of two different typologies of building wall: a wall in blocks of calcarenite sandstone assembled with mortar, typical of the constructions of "Sassi of Matera,"...
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