scanning tunneling microscopy of carbon nanotubes and nanocones

CARBON NANOTUBES 2012 pptx

Ngày tải lên : 05/03/2014, 15:21

... Scanning tunneling microscopy of carbon nanotubes and nanocones 65 T W EBBESEN and T TAKADA: Topological and SP3 defect structures in nanotubes 71 S IHARA and S ITOH: Helically coiled and torodial ... on carbon nanotubes We hope this book will contribute to the dissemination of present understanding of the subject and to future developments in the science and technology of carbon nanotubes and ... properties of the nanotubes The symmetry groups for carbon nanotubes can be either symmorphic [such as armchair (n,n )and zigzag Physics of carbon nanotubes 29 Table Parameters of carbon nanotubes...

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CARBON NANOTUBES ppt

Ngày tải lên : 14/03/2014, 16:20

... Scanning tunneling microscopy of carbon nanotubes and nanocones 65 T W EBBESEN and T TAKADA: Topological and SP3 defect structures in nanotubes 71 S IHARA and S ITOH: Helically coiled and torodial ... on carbon nanotubes We hope this book will contribute to the dissemination of present understanding of the subject and to future developments in the science and technology of carbon nanotubes and ... properties of the nanotubes The symmetry groups for carbon nanotubes can be either symmorphic [such as armchair (n,n )and zigzag Physics of carbon nanotubes 29 Table Parameters of carbon nanotubes...

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CARBON NANOTUBES pot

Ngày tải lên : 27/06/2014, 17:20

... Scanning tunneling microscopy of carbon nanotubes and nanocones 65 T W EBBESEN and T TAKADA: Topological and SP3 defect structures in nanotubes 71 S IHARA and S ITOH: Helically coiled and torodial ... on carbon nanotubes We hope this book will contribute to the dissemination of present understanding of the subject and to future developments in the science and technology of carbon nanotubes and ... properties of the nanotubes The symmetry groups for carbon nanotubes can be either symmorphic [such as armchair (n,n )and zigzag Physics of carbon nanotubes 29 Table Parameters of carbon nanotubes...

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CARBON NANOTUBES.Elsevier Journals of Related Interest Applied Superconductivity Carbon Journal pdf

Ngày tải lên : 27/06/2014, 17:20

... Scanning tunneling microscopy of carbon nanotubes and nanocones 65 T W EBBESEN and T TAKADA: Topological and SP3 defect structures in nanotubes 71 S IHARA and S ITOH: Helically coiled and torodial ... on carbon nanotubes We hope this book will contribute to the dissemination of present understanding of the subject and to future developments in the science and technology of carbon nanotubes and ... properties of the nanotubes The symmetry groups for carbon nanotubes can be either symmorphic [such as armchair (n,n )and zigzag Physics of carbon nanotubes 29 Table Parameters of carbon nanotubes...

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sensor response of sol–gel multiwalled carbon nanotubes-tio2 composites

Ngày tải lên : 20/03/2014, 13:07

... sensor response, and times of adsorption/desorption of screenprinted and dip-coated films sensing a flux of 150 mL of N2 with a charge of 1% NH3 Material Fig Optical properties of: (a) dip-coated ... adsorption/desorption, and the direction and amount of charge transfer Fig Photocurrent ratio of dip-coated TiO2 –MWCNT films and TiO2 films as a function of wavelenght The spectral response of TiO2 (broken line) and ... electrochemical and photoelectrochemical energy conversion and storage, synthesis and characterization of composites based in inorganic and organic semiconductors, and nanocarbon materials in energy and...

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Báo cáo hóa học: " Multiscale investigation of graphene layers on 6H-SiC(000-1)" pot

Ngày tải lên : 21/06/2014, 05:20

... to 60 nm (c, d) Raman shift of the G and 2D bands, respectively The positions of both bands are shifted to higher energies The G band is around 1610 cm-1 and the 2D band around 2750 cm-1 This high ... centered at 1582 cm-1, and a 2D band at 2690 cm-1 The average up shift is then of 28 cm-1 for the G band, and of 60 (30) cm-1 for the 2D (D) band, respectively The G and 2D band Raman shift maps are ... D band lies around 1380 cm-1, the G band around 1610 cm-1, and the 2D band around 2750 cm-1 whereas neutral relaxed graphene has a D band around 1350 cm-1, a G band centered at 1582 cm-1, and...

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báo cáo hóa học:" Optimizing the thermoelectric performance of zigzag and chiral carbon nanotubes" pdf

Ngày tải lên : 21/06/2014, 17:20

... performance of zigzag and chiral carbon nanotubes Xiaojian Tan1, Huijun Liu*1, Yanwei Wen1, Hongyan Lv1, Lu Pan1, Jing Shi*1, and Xinfeng Tang2 Key Laboratory of Artificial Micro- and Nano-structures of ... dispersion and separation of carbon nanotubes Nat Mater 2003, 2:338-342 Figure Lattice thermal conductivity of tube (4,2) as a function of temperature Results from the Callaway-Holland model and the ... the NEGF and NEMD calculations HJL participated in the design of the study and discussions of the theoretical results YWW, HYL, and LP participated in the implementation of the LAMMPS and ATK...

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Modeling and simulation of buckling of pristine and defective carbon nanotubes

Ngày tải lên : 09/09/2015, 18:54

... properties of carbon nanotubes 1.1.3 Applications of carbon nanotubes 1.2 Motivation 1.3 Objective and scope of work 11 1.4 Layout of the thesis 13 CHAPTER 2: LITERATURE REVIEW 2.1 Buckling of CNTs ... achiral carbon nanotubes The latter comprises of both zigzag and armchair carbon nanotubes This categorization is done based on the orientation of carbon- carbon (C-C) bonds Orientation of C-C ... the shape of a cylinder Depending on the geometry of CNT, the following categories of CNT can be found Single-walled and multi-walled carbon nanotubes CNTs as single-walled carbon nanotubes (SWNTs)...

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Study of field emission characteristics of ultrathin film coated carbon nanotubes core shell structures 1

Ngày tải lên : 11/09/2015, 10:17

... LIST OF SYMBOLS XV XVII CHAPTER INTRODUCTION 1.1 Background 1.2 Carbon Nanotubes 1.2.1 Discovery of Carbon Nanotubes 1.2.2 Bonding Structures of Carbon Nanotubes 1.2.3 Properties of Carbon Nanotubes ... the tube axis, and a1 and a2 are the unit vectors of graphene in real space Fig 1.4 Schematic illustration of sp1, sp2 and sp3 hybrid carbon orbitals Fig 1.5 Illustration of energy of the electrons ... Schematic illustration of sp1, sp2 and sp3 hybrid carbon orbitals Hybridization determines the type of bonding of the carbon atoms with their types n neighbors, and different types of bonding are responsible...

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Study of field emission characteristics of ultrathin film coated carbon nanotubes core shell structures 2

Ngày tải lên : 11/09/2015, 10:17

... the quantum tunneling electron emission mechanism The slope of the linear region of the F-N plot is a function of both β and Ø, which can be expressed as below by transformation of the Eq (2.3): ... h/r, where h is the projection height and r is the radius of the emitter tip [39] As such, shapes like nanowires, nanotubes and nanocones have aroused more and more interest among FE researchers ... low and high electrical field This deviation might be due to the space charge effects, overheating of the emitter tips or the low concentration of the carriers in the tips, conduction band of...

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Study of field emission characteristics of ultrathin film coated carbon nanotubes core shell structures 3

Ngày tải lên : 11/09/2015, 10:17

... various materials, including carbon and carbon related materials (diamond, nanocrystalline diamond and CNTs, etc.) and non -carbon advanced materials, such as GaN, SiC, Ga2O3 and silicon whiskers [18] ... representing the order of diffraction, λ is the wavelength, d is the interplanar spacing of the reflecting (diffracting) plane, and θ is the angle of the incidence and of the diffraction of the radiation ... measurements of the work functions and band structures of the solid, the surface and adsorbed layers [27, 28] In this study, UPS technique was used to measure the work functions of the samples Photons of...

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