morphology studied by field emission scanning electron microscopy fe sem

Two dimensional molecular self assemblies on surfaces studied by low temperature scanning tunneling microscopy

Ngày tải lên : 11/09/2015, 09:58

... Electron Microscopy TEM Transmission Electron Microscopy NFSOM Near -Field Scanning Optical Microscopy LEEM Low-Energy Electron Microscopy PEEM Photoemission Electron Microscopy UHV Ultra-High Vacuum ... microscopy (SEM) , transmission electron microscopy (TEM), near -field scanning optical microscopy (NFSOM), low-energy electron microscopy (LEEM), and photoemission electron microscopy (PEEM) The invention ... Temperature Scanning Tunneling Microscopy STS Scanning Tunneling Spectroscopy MBE Molecular Beam Epitaxy FIM Field Ion Microscopy AFM Atomic Force Microscope SEM Scanning Electron Microscopy TEM...

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STRUCTURES OF ADSORBED HALIDE ANIONS ON a COPPER ELECTRODE STUDIED BY IN SITU SCANNING TUNNELING MICROSCOPY

Ngày tải lên : 30/10/2015, 20:57

... electrochemical scanning tunneling microscopy (EC-STM) described in detail by Wilms et al [20] In order to eliminate the inﬂuence of oxygen as well as acoustic and electromagnetic interferences from ... support by the Deutsche Forschungsgemeinschaft (DFG) through the SFB 624 project is gratefully acknowledged STRUCTURES OF ADSORBED HALIDE ANIONS ON A COPPER ELECTRODE STUDIED BY 247 REFERENCES ... surface the supporting electrolyte (10 mM HCl) was replaced by STRUCTURES OF ADSORBED HALIDE ANIONS ON A COPPER ELECTRODE STUDIED BY 241 a solution containing iodide (10 mM HCl + mM KI) at a...

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Báo cáo hóa học: " On the Morphology, Structure and Field Emission Properties of Silver-Tetracyanoquinodimethane Nanostructures" pptx

Ngày tải lên : 21/06/2014, 17:20

... ﬁeld emission properties of Ag-TCNQ nanostructures, the morphologies characterization for those samples grown under different conditions is necessary The morphology is characterized by scanning electron ... scanning electron microscopy (SEM, XL30FEG,PHILIPS, with a resolution of nm) The structure of the as-grown nanostructures is by X-ray diffraction (XRD, Rigaku D/Max-3C) Field emission measurements ... AV-2 ) Emission Current (µA) 35 ln(I/V2 ) ( (b) -21 10 Applied field (V/ m) Those different nanostructures array with some certain morphology have different ﬁeld enhancement factor and effective...

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Báo cáo khoa học: "Site adaptations of Acanthogyrus (Acanthosentis) tilapiae: Observations through light and scanning electron microscopy" pptx

Ngày tải lên : 07/08/2014, 18:21

... gninnacS EW erriugA ,JJ avalA secnerefeR noitatsefni fo etis sti ot derohcna ylgnorts niamer tey noitcaer tsoh evissergga ylhgih a ekove ot detius msinagro na enifed ecafrus ydob eht no dna sicsoborp ... skooh sicsoborp eht fo stceffe lacol lufmrah eht gnicuder ylekil ,illiv fo ecafrus eht detanimod tey esrepsid erew sllec telbog citsalprepyh ehT esnopser tsoh eht tcelfer noitartlifni )slihponisoe ... eht fo sutats eht ot ecnerefer laiceps htiw ,)eadihcnyhronihcE :alahpecohtnacA( 4871 ,rellüM sinomlas suhcnyhronihcE fo ytilibairav dna htworg no seiceps tsoh fo tceffe ehT JM nildeR ,MO nimA...

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Báo cáo hóa học: " Layer-dependent nanoscale electrical properties of graphene studied by conductive scanning probe microscopy" docx

Ngày tải lên : 21/06/2014, 00:20

... different EFM phase shifts for different graphene layers at different samples biases In conclusion, the nanoscale electrical properties of graphene with different number of layers have been studied ... different electrical properties obtained on different number of graphene layers could be mainly attributed to their different electronic properties Acknowledgements This work was supported by ... change in Fermi level (EF) in graphene, which was different for SLG and BLG Our results can be interpreted in the similar viewpoint Different changes of EF with gate voltage for different graphene...

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Nanostructure, biopiezoelectric and bioferroelectric behaviors of mollusk shells studied by scanning probe microscopy techniques

Ngày tải lên : 10/09/2015, 09:23

... Oscillation DTA Differential Thermal Analysis EDTA Ethylenediaminetetraacetic acid FE Finite Element FeRAMs Nonvolatile Ferroelectric Memories FESEM Field Emission Scanning Electron Microscope ... Characterization under Flexural Stresses 39 3.3 Morphology Characterization 43 3.3.1 Field Emission Scanning Electron Microscopy (FE- SEM) 43 3.3.2 AFM 44 3.4 Mechanical ... Green Abalone shell studied by Scanning Probe Microscopy Techniques, Acta Materialia, 59 (2011), 3667-3679 Conference Presentations T Li and K Zeng, “Electro-Mechanical Coupling Effects of the Green...

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Báo cáo khoa học: Structure of the atrial natriuretic peptide receptor extracellular domain in the unbound and hormone-bound states by single-particle electron microscopy ppt

Ngày tải lên : 07/03/2014, 03:20

... quenched by water The difference spectrum obtained by subtracting the ANP–ECD emission from the apoECD emission revealed a shift to a longer wavelength (Fig 4C) This red shift in the emission difference ... 100% intensity The difference emission spectrum obtained by subtracting the emission intensity of ANP–ECD from that of the apoECD dimer is indicated by circles (D) Fluorescence emission spectra of ... observed here by single-particle EM closely resembles that recognized by X-ray crystallography, thus supporting the proposed signaling mechanism In summary, the 3D reconstructions by single-particle...

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Báo cáo khoa học: New roles of ﬂavoproteins in molecular cell biology: Blue-light active ﬂavoproteins studied by electron paramagnetic resonance pptx

Ngày tải lên : 16/03/2014, 02:20

... intraprotein electron transfer in photoreactivation by DNA photolyase in vivo Biochemistry 43, 15103–15110 Zeugner A, Byrdin M, Bouly J-P, Bakrim N, Giovani B, Brettel K & Ahmad M (2005) Light-induced electron ... determine the geometric and electronic structure of paramagnetic entities by hyperﬁne interactions between nuclear magnetic moments and the magnetic moment of the unpaired electron spin In most cases, ... in the order of $ 20 ls By using magnetic-ﬁeld modulation frequencies higher than the FEBS Journal 276 (2009) 4290–4303 ª 2009 The Authors Journal compilation ª 2009 FEBS 4293 Blue-light active...

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Báo cáo hóa học: " Memory properties and charge effect study in Si nanocrystals by scanning capacitance microscopy and spectroscopy" docx

Ngày tải lên : 21/06/2014, 05:20

... image by electrostatic force microscopy J Appl Phys 2003, 93:5369 Shafai C, Thomson DJ, Simard-Normandin M, Mattiusi G, Scanlon PJ: Delineation of semiconductor doping by scanning resistance microscopy ... Blanc J: Scanning capacitance microscopy Journal of Applied Physics 1985, 57(5):1437-1444 Barrett RC, Quate CF: Charge Storage in a Nitride-Oxide-Silicon Medium by Scanning Capacitance Microscopy ... electrostatic force microscopy J Appl Phys 2005, 97:043703 Thirstrup C, Sakurai M, Stokbro K, Aono M: Visible light emission from atomic scale patterns fabricated by the scanning tunneling microscope...

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Báo cáo hóa học: " Morphology-dependent field emission properties and wetting behavior of ZnO nanowire arrays" docx

Ngày tải lên : 21/06/2014, 06:20

... appeared dark gray indicating the deposition The morphology and crystal structures were characterized by field emission scanning electron microscope (FESEM, Philips Sirion 200) and X-ray diffractometer ... essence of the FE performance and wetting behavior related to the corresponding nanostructured arrays Abbreviations CA: contact angle; DI: de-ionized; FE- SEM: field emission scanning electron microscope; ... relationship, indicating that the electron emission is indeed caused by a vacuum tunneling b is the field- enhancement factor defined as the ratio of the local electric field at the tip of a nanowire...

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Báo cáo hóa học: " Effect of Substrate Morphology on Growth and Field Emission Properties of Carbon Nanotube Films" pptx

Ngày tải lên : 22/06/2014, 01:20

... morphological features were deposited on substrates with different surface morphology by the MPECVD process and their FE characteristics were investigated The correlation between structure, morphology, ... with different initial morphology by MPECVD 2.0 V/µm 3.0 V/µm 3.2 V/µm Total emission current: ~5 mA process It is found that substrate morphology strongly affects the growth morphology of CNTs in ... NH3 gas Scanning electron microscope (SEM) (LEO 435 VP) operating at 15 kV was used for surface morphological features of the substrate and ﬁlms Structural analysis of CNTs was carried out by transmission...

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Báo cáo hóa học: " Excellent Field Emission Properties of Short Conical Carbon Nanotubes Prepared by Microwave Plasma Enhanced CVD Process" doc

Ngày tải lên : 22/06/2014, 06:20

... of Fe *10 nm were deposited on chemically cleaned Si wafers by thermal evaporation technique at a base pressure of 2.0 10-6 Torr and no buffer layer was used between Fe film and Si substrates Fe- coated ... temperature, (ii) etching of Fe film by active plasma species, and (iii) conversion of the Fe film into Fe nanoparticles needed for CNTs nucleation and growth The Fe films were pretreated in NH3 ... in the range of 350–550 °C Scanning electron microscope (SEM) (LEO 435 VP) operating at 15 kV was used for surface morphological features of the films Transmission electron microscope (TEM) (Philips,...

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Báo cáo hóa học: " Excellent Field Emission Properties of Short Conical Carbon Nanotubes Prepared by Microwave Plasma Enhanced CVD Process" pot

Ngày tải lên : 22/06/2014, 19:20

... of Fe *10 nm were deposited on chemically cleaned Si wafers by thermal evaporation technique at a base pressure of 2.0 10-6 Torr and no buffer layer was used between Fe film and Si substrates Fe- coated ... temperature, (ii) etching of Fe film by active plasma species, and (iii) conversion of the Fe film into Fe nanoparticles needed for CNTs nucleation and growth The Fe films were pretreated in NH3 ... in the range of 350–550 °C Scanning electron microscope (SEM) (LEO 435 VP) operating at 15 kV was used for surface morphological features of the films Transmission electron microscope (TEM) (Philips,...

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Báo cáo vật lý: "EXOTHERMIC TRANSITIONS ON COOLING OF GELATINIZED NATIVE RICE STARCH STUDIED BY DIFFERENTIAL SCANNING CALORIMETRY" doc

Ngày tải lên : 07/08/2014, 14:20

... amylosemonoglyceride complexes J Cereal Sci., 3, 239–248 Marshall, W.E & Normand, F.L (1991) Exothermic transitions in whole grain milled rice and milled rice flour studied by differential scanning ... affected by cooling rate as compared with those of 1:2 and 1:3 systems in which, higher cooling rate produced larger exothermic peak It is believed that the differences in responses exhibited by the ... amyloselipid interactions during rice parboiling investigated by temperature resolved wide angle X-ray scattering and differential scanning calorimetry J Cereal Sci., 42, 334–343 Tufvesson, F...

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structural studies of multi-drug resistance p-glycoprotein by electron microscopy

Ngày tải lên : 14/11/2014, 09:26

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Tài liệu SCANNING PROBE MICROSCOPY – PHYSICAL PROPERTY CHARACTERIZATION AT NANOSCALE pptx

Ngày tải lên : 12/02/2014, 16:20

... electromagnetic field, it has been shown that the effective mass of the electron increased by four orders of magnitude By confining electrons to thin wires, an enhancement of their mass was achieved by orders ... effective mass of the electron increases by two orders of magnitude and the effective electron density decreases by three orders of magnitude The cyclotron resonance frequency was found to be few ... SCANNING PROBE MICROSCOPY – PHYSICAL PROPERTY CHARACTERIZATION AT NANOSCALE Edited by Vijay Nalladega Scanning Probe Microscopy – Physical Property Characterization at Nanoscale Edited by...

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Tài liệu Báo cáo Y học: The solution structure and activation of visual arrestin studied by small-angle X-ray scattering pot

Ngày tải lên : 22/02/2014, 07:20

... momentum transfer range available for Guinier analysis to 0.06 < S < 0.08 Data points obtained by dilution of a 140-lM stock solution are indicated by circles, while those obtained by further concentration ... time interval Recording of each protein sample was preceded and followed by recording from the buffer alone; these buffer measurements were compared and provided a check on beam properties and ... species comprise only a minor component of the mixture and their effect is limited to the low angle Guinier region Ó FEBS 2002 Effect of rhodopsin C-terminal phosphopeptide on arrestin conformation...

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Báo cáo khoa học: Protein stabilization by compatible solutes Effect of diglycerol phosphate on the dynamics of Desulfovibrio gigas rubredoxin studied by NMR docx

Ngày tải lên : 07/03/2014, 21:20

... stabilized by diglycerol phosphate (DGP), a solute accumulated by the hyperthermophilic archaeon Archaeoglobus fulgidus [7,29] Addition of 100 mM DGP yields a fourfold increase in the half-life for ... small Nevertheless, the faster time-scales would still be the least affected by solute addition, suggesting that the stabilizing effect operates via a higher restriction of the wider motions Most ... loss of the metal centre, this effect may be compared with a change of 4.2 kJỈmol)1 required by the Arrhenius equation to explain the fourfold increase in the half-life for thermal denaturation [7]...

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Báo cáo khoa học: High-pressure effects on horse heart metmyoglobin studied by small-angle neutron scattering pdf

Ngày tải lên : 08/03/2014, 10:20

... scattering data the actual protein contrast given by Eqn has been replaced by the quantity ! NA K0 Pị ẳ bp q0 b Pịvp ð0:1Þ ð4Þ Mp where q0b ðP Þ is given by Eqn Using this expression and the virial ... gyration, Rg(P,0), at each pressure were inferred from Rg(P,c) by extrapolation to c(P) ¼ according to Eqn Figure shows no signiﬁcant variation of Rg(P,0) within the studied pressure range The mean value ... transfers, q, ranging from 0.07 to 0.75 nm)1 q ¼ (4p/k)sin(h/2), where h is the scattering angle The SANS spectra were collected at room temperature, near 20 °C Each raw spectrum was divided by...

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Báo cáo khoa học: Structural features and dynamics of a cold-adapted alkaline phosphatase studied by EPR spectroscopy docx

Ngày tải lên : 16/03/2014, 01:20

... addition, by using double ˚ labeling, distances as long as 80 A have been measured using pulsed double resonance EPR methods (e.g pulsed electron- electron double resonance, double electron electron ... for six different spin-labeled sites of Vibrio AP, as well as for the two C67R1 ⁄ W274 variants It has reference areas based on previous work by Isas et al [37] who constructed a FEBS Journal ... activity of the two W274 variants was not affected by spin-labeling at C67 beyond the small decrease observed in the control Characterization of mobility by EPR spectroscopy Figure shows the EPR...

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