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Interconnection of electrodes using field emission induced growth of nanowires

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

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

... consisted of the a-Fe2O3 Fig The I–V characteristics of (a) the ITO /a-Fe2O3 film /a-Fe2O3 NW/ CAFM-tip structure and (b) the ITO /a-Fe2O3 film /CAFM-tip structure Fig The CAFM images of (a) morphology and ... 108 NWs/cm2 123 332 Fig (a) TEM image of an a-Fe2O3 NW, (b) HR-TEM image of the a-Fe2O3 nanowire, and the SAED pattern of the a-Fe2O3 NW (inset) for sample C, and 18.3 108 NWs/cm2 for sample D Table ... resistivity of an a-Fe2O3 NW, and L and r represent the average length (800 nm) and radius (15 nm) of the NW, respectively We assumed that q (4.42 103 Xcm) is a constant for all of the as-produced a-Fe2O3...
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ultra-sharp a-fe2o3 nanoflakes growth mechanism and field-emission

ultra-sharp a-fe2o3 nanoflakes growth mechanism and field-emission

... at half length and radii (solid circles) of tangent circles of the tips as a function of heating temperatures FIGURE ZHENG et al Ultra-sharp α-Fe2 O3 nanoflakes: growth mechanism and field-emission ... 245, 291, 408 and 499 cm−1 correspond to the α-Fe2 O3 phase [20], namely two A1g modes (225 and 499 cm−1 ) and three Eg modes (245, 291 and 408 cm−1 ) Those peaks locating at 552 and 671 cm−1 ... [110] and the growth plane may be (110) where the oxygen is rich and Fe is deficient [13] Driven by the O-rich and Fe-deficient, at low temperatures (260 – 300 ◦ C), the diffusion of Fe atoms and...
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Báo cáo hóa học:

Báo cáo hóa học: " Nano-structure fabrication of GaAs using AFM tip-induced local oxidation method: different doping types and plane orientations" ppt

... doi:10.1186/1556-276X-6-550 Cite this article as: Ahn et al.: Nano-structure fabrication of GaAs using AFM tip-induced local oxidation method: different doping types and plane orientations Nanoscale Research Letters ... height profiles of p -GaAs( 100), n -GaAs( 100), pGaAs(711), and n -GaAs( 711) As a function of the applied bias voltages and the loading forces Conclusions To summarize, the AFM tip-induced local oxidation ... increase in a local maximum electric field and thus improved local oxidation Figure shows the loading force-dependent local oxide height for GaAs with different doping types and Page of plane orientations...
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Báo cáo hóa học:

Báo cáo hóa học: " Fabrication of functional micro- and nanoneedle electrodes using a carbon nanotube template and electrodeposition" ppt

... nanotube nanoneedle (a) Carbon nanotube nanoneedle before Au nanoparticle coating and (b) after Au nanoparticle coating (scale bar: μm) (c) Magnified view of Au nanoparticle-coated nanoneedle (scale ... Figure Schematic diagram of the nanoneedle fabrication process (a) A carbon nanotube nanoneedle using dielectrophoresis and (b) a functional material-coated micro- or nanoneedle using electrodeposition ... this article as: An et al.: Fabrication of functional micro- and nanoneedle electrodes using a carbon nanotube template and electrodeposition Nanoscale Research Letters 2011 6:306 Submit your manuscript...
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Báo cáo hóa học:

Báo cáo hóa học: " Field emission enhancement of Au-Si nano-particle-decorated silicon nanowires" doc

... electron field emission characteristics Appl Surf Sci 2004, 221:38 doi:10.1186/1556-276X-6-176 Cite this article as: Zhao et al.: Field emission enhancement of Au-Si nano-particle-decorated silicon ... potential barrier height of emitter Conclusions Au film coating on the tip of SiNWs reduces the FE properties of SiNWs because of Au having high work function Well-aligned Au-Si nano-particle-decorated ... E on value of the Au-Si nanoparticle-decorated SiNWs is about 1.95 V/μm, and J can reach 200 μA/cm at the applied field of 2.79 V/μm Improvement of the FE properties may be due to Au-Si nano-particle...
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Báo cáo hóa học:

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

... field emitters Adv Mater 2007, 19:2593 30 Zhang Y, Lee CT: Site-controlled Growth and Field Emission Properties of ZnO Nanorod Arrays J Phys Chem C 2009, 113:5920 31 Patra SK, Rao GM: Field emission ... Cooperative and Anisotropic wetting for Liquid Reprography Adv Mater 2009, 21:1 doi:10.1186/1556-276X-6-74 Cite this article as: Yao et al.: Morphology-dependent field emission properties and wetting behavior ... Efficient field emission from ZnO nanoneedle arrays Appl Phys Lett 2003, 83:144 Tseng YK, Huang CJ, Cheng HM, Lin IN, Liu KS, Chen IC: Characterization and Field- Emission Properties of Needle-like...
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Báo cáo hóa học:

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

... that the emission area in this high field region not changed, and the stability of field emission is high The slopes and intercedes of these plots in the high field region are the same, showing the ... AlQ3 Conclusions In conclusion, the field emission properties for Ag-TCNQ nanostructured array were dependent on the structure and morphology determined by the reaction temperature and the initial ... dependence on the other growth conditions are first studied in detail Figure shows the characteristics of emission current density versus applied field for them grown under the reaction temperature of...
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báo cáo hóa học:

báo cáo hóa học:" Paradox of low field enhancement factor for field emission nanodiodes in relation to quantum screening effects" doc

... Paradox of low field enhancement factor for field emission nanodiodes in relation to quantum screening effects Tsung-Chieh Cheng*1, Pai-Yen Chen2, and Shen-Yao Wu1 Department of Mechanical ... wuman0802@msn.com Abstract We put forward the quantum screening effect in field emission [FE] nanodiodes, explaining relatively low field enhancement factors due to the increased potential barrier ... bottom of cathode is still large It is quite evident that the quantum screening effect may decrease the field enhancement factor Besides, comparing with the field emission properties of SiNTs...
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báo cáo hóa học:

báo cáo hóa học:" Synthesis and Enhanced Field-Emission of Thin-Walled, Open-Ended, and Well-Aligned N-Doped Carbon " pot

... ratio 0.90 0.87 0.92 and the strong band around 1,335 cm-1 is referred to the D-band The D-band corresponds to the defects and disordered in the graphene sheets, and the G-band is attributed to ... Conclusions Thin-walled, open-ended, and well-aligned N-doped CNTs were synthesized by using acetonitrile as a carbon source Temperature effects on diameter, TWI of as-produced CNTs and Fe encapsulation ... graphitized carbon fabric [37], SWCNTs [38], aligned carbon nanotubes on plastic substrates [18]), N-doped CNTs (e.g., aligned N-doped CNTs [14], N-doped double-walled CNTs [39]), and FeNi-filled...
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Báo cáo hóa học:

Báo cáo hóa học: " Field Emission Properties and Fabrication of CdS Nanotube Arrays" pot

... the FE properties of CdS nanotube arrays The FE properties of CdS nanotube arrays increase with the increase of l/t The length of samples A, B, and C are almost same, so the arrays of CdS nanotube ... images of b, c, and d are high magnification TEM images of A, B, and C, respectively The inset images are SAED patterns of corresponding CdS nanotube Fig a Field emission J–E curve of CdS nanotube ... (PL) measurement of the CdS nanotube arrays are shown in Fig 2d A green emission band around 550 nm and a red emission band around 750 nm [14] are observed The PL intensities of CdS nanotube arrays...
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Báo cáo hóa học:

Báo cáo hóa học: " A Study on Field Emission Characteristics of Planar Graphene Layers Obtained from a Highly Oriented Pyrolyzed Graphite Block" potx

... electrons are emitted from the graphene tip creating an electron current that can be modulated on and off Fig Fabrication process of graphene sheets using a mechanical exfoliation method The graphene ... vacuum chamber, two tungsten tips were located on the graphene sample; one was contacted directly to the sample and grounded as a cathode, and the other was placed an arbitrary distance, d, apart ... field-enhancement factor, u: work function, A: area, ": reduced Planck h constant, and m: electron mass Assuming the work function of graphene is eV and the gap between the graphene sheet and the nanomanipulator...
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Báo cáo hóa học:

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

... variety of nanostructured carbon films ranging from diamond [24], carbon nanosheets [25] CNTs [20, 23], and carbon nanobells [26, 27] to monochiral MWNTs [28] on Si substrates This technique offers ... treatment of Fe film on such substrates These particles probably seeded the nucleation and growth of CNTs Surface morphology of CNT films deposited on such substrates is presented in Fig Sample consists ... aligned growth This indicates that orientation of nanotubes is largely dependent on the local geometry of the substrate This was further confirmed by the orientation of CNTs near the edge of the substrates...
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Báo cáo hóa học:

Báo cáo hóa học: " Synthesis, Electrical Measurement, and Field Emission Properties of a-Fe2O3 Nanowires" potx

... consisted of the a-Fe2O3 Fig The I–V characteristics of (a) the ITO /a-Fe2O3 film /a-Fe2O3 NW/ CAFM-tip structure and (b) the ITO /a-Fe2O3 film /CAFM-tip structure Fig The CAFM images of (a) morphology and ... 108 NWs/cm2 123 332 Fig (a) TEM image of an a-Fe2O3 NW, (b) HR-TEM image of the a-Fe2O3 nanowire, and the SAED pattern of the a-Fe2O3 NW (inset) for sample C, and 18.3 108 NWs/cm2 for sample D Table ... resistivity of an a-Fe2O3 NW, and L and r represent the average length (800 nm) and radius (15 nm) of the NW, respectively We assumed that q (4.42 103 Xcm) is a constant for all of the as-produced a-Fe2O3...
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Báo cáo hóa học:

Báo cáo hóa học: " Field Emission and Radial Distribution Function Studies of Fractal-like Amorphous Carbon Nanotips" potx

... resolution of 0.25 nm One of the tungsten tips is landed on a platinum contact which ends at the base of the nanostructure and the other is positioned close to the outer branches of the nanostructure ... silica /carbon heterostructures [16] and arrays of fractal-like a-C nanotips [11] RDF Studies Previous to the FE experiments we made energy-filtered convergent-beam electron diffraction (EFCBED) studies ... eV b C–K ELNES of a nanostructure typical of highly sp2 amorphous carbon transition These two transitions are consistent with the ELNES spectrum of a-C [21] Based on this type of spectrum we...
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Interconnection of electrodes using field emission induced growth of nanowires

Interconnection of electrodes using field emission induced growth of nanowires

... stress during growth from the high electric field Cold -field emission induced growth of single ultrathin nanowires of tens of microns long was first reported by Thong et al (2002) By using high ... nanotube) through the technique of field emission induced growth (FEIG), as shown in Figure 1.4 In FEIG of nanowires, an electric field high enough for field emission is applied on a sharp tip ... initiate field emission from a sharp tip followed by continued field emission from the grown nanowire, nanowire of several tens of micrometers could be grown Low field emission currents of ~100nA...
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