optical response of carbon nanotubes

Optical limitng and field emission studies of carbon nanotubes

Ngày tải lên : 27/11/2015, 12:23

... Carbon Properties of Carbon Carbon Nanotubes Structure of Carbon Nanotubes Electronic Structure of Carbon Nanotubes Synthesis Methods of Carbon Nanotubes 1.6.1 Arc Discharge 1.6.2 Laser Ablation ... Applications of Carbon Nanotubes 1.8.1 Nano-electronic Devices 1.8.2 Nanoscale Junctions 1.8.3 Nanoprobes 1.8.4 Nanoelectrodes Optical Limiting Effects of Carbon Nanotubes Carbon Nanotubes as ... clearly shows the potential of nanotubes serving as electrodes in such devices 1.8 Optical Limiting Effects of Carbon Nanotubes Carbon nanotubes also show excellent optical limiting characteristics...

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The Science and Technology of Carbon Nanotubes potx

Ngày tải lên : 05/03/2014, 17:20

... 63 Chapter Electronic Properties of Carbon Nanotubes Probed by Magnetic Measurements M Kosaka and K Tanigaki 76 viii Chapter Optical Response of Carbon Nanotubes F Bommeli, L Degiorgi, ... dependence of@ e structure of EELS on the diameter and the anisotropic features of CNTs Introduction - Morphological Features of CNTs Since the discovery of carbon nanotubes (CNTs) [I], most of the ... of the science and technological aspects of CNTs vi It is our biggest sorrow that in the course of preparation of this monograph one of the Editors, Professor Kenichi Fukui, Nobel Laureate of...

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Deposition of carbon nanotubes on si nanowires by chemical vapor deposition

Ngày tải lên : 16/03/2014, 15:04

... high (b1100°C), a mixture of graphitic carbon and SiC nanowires was formed because of both the carbonization of the nanowires and the fast carbon deposition to form the carbon- like structure Conclusions ... formed by carbon atoms diusing into the Si NWs, CNTs could not be formed very well on the surface of nanowires because of both the volume change of the nanowires and breaking of the carbon network ... coated carbon grew to become large carbon sheets, as shown in the bottom image in Fig 4b Even the nanowires were completely carbonized and mixed into a lot of carbon sheets to form a mixture of Fig...

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purification of carbon nanotubes

Ngày tải lên : 20/03/2014, 13:06

... Multi-step purification of carbon nanotubes Carbon 2002;40(1):81–5 Ikazaki F, Ohshima S, Uchida K, Kuriki Y, Hayakawa H, Yumura M, et al Chemical purification of carbon nanotubes by use of graphite-intercalation ... decomposition of hydrocarbons Carbon 2000;38(14):2041–5 Montoro LA, Rosolen JM A multi-step treatment to effective purification of single-walled carbon nanotubes Carbon 2006;44(15):3293–301 CARBON ( ... New method of purification of carbon nanotubes based on hydrogen treatment J Phys Chem B 2004;108(22):6935–7 [55] Tan SH, Goak JC, Hong SC, Lee N Purification of singlewalled carbon nanotubes using...

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Mechanical Properties of Carbon Nanotubes potx

Ngày tải lên : 24/03/2014, 05:20

... Young’s modulus of carbon nanotubes The amplitude of those oscillations was deﬁned by means of careful TEM observations of a number of nanotubes The authors obtained an average value of 1.8 TPa for ... number of experimental measurements of the Young’s modulus of nanotubes have been reported The ﬁrst such study [71] correlated the amplitude of the thermal vibrations of the free ends of anchored nanotubes ... 10) nanotubes a pseudogap of the order of 0.1 eV is predicted to open up in the density of states due to the breaking of mirror symmetry in the rope [18] Mechanical Properties of Carbon Nanotubes...

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electrical and thermal interface conductance of carbon nanotubes grown under dc bias voltage

Ngày tải lên : 06/05/2014, 08:53

... spectra of CNTs grown under negative and zero dc bias voltage represent sp3 rich phases of CNTs and suggest the existence of amorphous carbon or defects on the walls of CNTs.31 The absence of a ... intensity of the G-band reﬂects the degree of graphitization of carbon materials The effect of dc bias voltage on the IG/ID ratio and the FWHM are presented in Figure The line shapes of the G- ... both ends of each CNT.18,25 A total of ﬁve individual nanotubes were studied for each growth condition (or dc bias voltage), and the nanotubes were randomly picked from three samples of MWCNT...

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applied physics of carbon nanotubes, 2005, p.361

Ngày tải lên : 04/06/2014, 14:50

... single-walled variant of carbon nanotubes Since then, we have observed the progress of science and technology as it relates to carbon nanotubes changing from the discovery of various methods to ... concepts to the studies of the unique physical and mechanical properties of carbon nanotubes Some of the chapters in these books deal with what might be unique about carbon nanotubes and where one ... desirable nanotubes, and unique and novel measurement tools to characterize the chiralities of nanotubes Other chapters deal with the measurement of the electronic properties of carbon nanotubes...

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Báo cáo hóa học: " The application of carbon nanotubes in target drug delivery systems for cancer therapies" docx

Ngày tải lên : 20/06/2014, 22:20

... energy of singlewalled carbon nanotubes Appl Phys Lett 1999, 16:2307-2309 Peigney A, Laurent C, Flahaut E, Bacsa RR, Rousset A: Specific surface area of carbon nanotubes and bundles of carbon nanotubes ... applications of single walled carbon nanotubes Curr Med Chem 2010, 17:10-24 Ito Y, Venkatesan N, Hirako N, Sugioka N, Takada K: Effect of fiber length of carbon nanotubes on the absorption of erythropoietin ... separation of carbon nanotubes Nat Mater 2003, 2:338-342 Kim O-K, Je J, Baldwin JW, Kooi S, Pehrsson PE: Solubilization of single-wall carbon nanotubes by supramolecular encapsulation of helical...

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Báo cáo hóa học: " Thermal conductivity of carbon nanotubes and graphene in epoxy nanofluids and nanocomposites" pptx

Ngày tải lên : 20/06/2014, 23:20

... single wall carbon nanotubes Carbon 2002, 40:2043-2061 24 Deng F, Zheng QS, Wang LF: Effects of anisotropy, aspect ratio, and nonstraightness of carbon nanotubes on thermal conductivity of carbon ... properties of the system Thus, we aimed at studying the effect of two types of carbon- based nanofillers, in particular, nanotubes and graphene sheets, on the thermal conductivity of an uncured ... indicate that MWNTs are the most effective carbon nanofillers to improve the K of liquid resins Indeed, the K of the nanofluids gradually increased as a function of MWNT content, reaching a 70% improvement...

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Báo cáo hóa học: "Synthesis of carbon nanotubes with and without catalyst particles" doc

Ngày tải lên : 21/06/2014, 04:20

... Catalyzing Growth of Single-Walled Carbon Nanotubes on Substrates Nano Lett 2006, 6:2987 17 Lu C, Liu J: Controlling the Diameter of Carbon Nanotubes in Chemical Vapor Deposition Method by Carbon Feeding ... role of free radical condensates in the production of carbon nanotubes during the hydrocarbon CVD process Carbon 2006, 44:1653 55 Rümmeli MH, Bachmatiuk A, Scott A, Börrnert F, Warner JH, Hoffman ... Rümmeli MH: Tuning carbon nanotubes through poor metal addition to iron catalysts in CVD Fuller Nanotubes Carbon Nanostruct 2010, 18:703 13 Baker T: Formation of filamentous carbon Chem Ind (London)...

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Báo cáo hóa học: " Plasma-Assisted Synthesis of Carbon Nanotubes" pot

Ngày tải lên : 21/06/2014, 07:20

... high energy of *100 eV and caused C–C bond breakage The presence of plasma radicals such as NHx and H further chemically etched the surface of the carbon nanotubes The growth mechanism of SWNT in ... resistibility of the carbon nanotubes towards ion-etching effects In the tip-growth mechanism, the catalyst was at the tip of the vertically growing SWNT, offered protection to walls of the nanotube ... temperature of the plasma, and there was no plasma-heating effect at W so that the formation of sp linear carbon chains was generated in the carbon plasma Thus, a fraction of the sp linear carbon...

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Báo cáo hóa học: "Exploring the Immunotoxicity of Carbon Nanotubes" ppt

Ngày tải lên : 22/06/2014, 01:20

... activation of macrophages The unusual feature of the response is a very early switch from the acute phase of the response to fibrogenic events resulting in significant pulmonary deposition of collagen ... eosin staining of mouse lung tissue (a, e) Fluronic F-68-treated group acts as the solvent control (b, f) Early response (3 days) of the mouse lung tissue to a single dose of 0.5 mg of SWNT (c, ... the interactions of two types of SWNT (1) iron-rich (nonpurified) SWCNT (26% of iron) and (2) iron-stripped (purified) SWNT (0.23 wt% of iron) with RAW264.7 macrophages Each type of SWNT was able...

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Báo cáo hóa học: " Aggregate structure of hydroxyproline-rich glycoprotein (HRGP) and HRGP assisted dispersion of carbon nanotubes" doc

Ngày tải lên : 22/06/2014, 22:20

... of monogalactosylated serine and arabinosylated hydroxyproline Dispersion of SWNTs in YK20 solutions About mg of HiPCO carbon nanotubes (carbon nanotechnology Inc.) were added to a solution of ... non-complexed insoluble nanotubes The microfuge tube at the far left shows SWNTs solubilized in a mg/mL solution of YK20 while the microfuge tube to the right shows the 10-fold dilution of the SWNT-YK20 ... spectrum of SWNT-YK20 complexes multiplied by a factor of 2.25 Thus, the binding of SWNTs imposes some other conformations of YK20, and the polyproline II content in the secondary structure of the...

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Báo cáo hóa học: "Single step process for the synthesis of carbon nanotubes and metal/alloy-ﬁlled multiwalled carbon nanotubes" docx

Ngày tải lên : 22/06/2014, 22:20

... TEM images of Zr-based AB2 alloy filled MWNTs grown at a temperature of 850°C, (c) HRTEM image of Ni-filled MWNT grown at 875°C, (d) TEM image of MWNTs grown at 900°C optical mode E2g of two-dimensional ... Fig Dependence of carbon yield on the reaction temperature be through the precipitation of carbon in the form of MWNTs from the molten catalytic particles The melting temperatures of the alloy-C ... production of hydrogen [23] Carbon nanofibers possessing a platelet structure were obtained by Wang et al., by decomposition of methane over Ni–Cu–MgO catalyst [24] Since the morphology of deposited carbon...

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The Science and Technology of Carbon Nanotubes III ppt

Ngày tải lên : 27/06/2014, 17:20

... 63 Chapter Electronic Properties of Carbon Nanotubes Probed by Magnetic Measurements M Kosaka and K Tanigaki 76 viii Chapter Optical Response of Carbon Nanotubes F Bommeli, L Degiorgi, ... dependence of@ e structure of EELS on the diameter and the anisotropic features of CNTs Introduction - Morphological Features of CNTs Since the discovery of carbon nanotubes (CNTs) [I], most of the ... of the science and technological aspects of CNTs vi It is our biggest sorrow that in the course of preparation of this monograph one of the Editors, Professor Kenichi Fukui, Nobel Laureate of...

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The Science and Technology of Carbon Nanotubes pptx

Ngày tải lên : 27/06/2014, 18:20

... 63 Chapter Electronic Properties of Carbon Nanotubes Probed by Magnetic Measurements M Kosaka and K Tanigaki 76 viii Chapter Optical Response of Carbon Nanotubes F Bommeli, L Degiorgi, ... dependence of@ e structure of EELS on the diameter and the anisotropic features of CNTs Introduction - Morphological Features of CNTs Since the discovery of carbon nanotubes (CNTs) [I], most of the ... of the science and technological aspects of CNTs vi It is our biggest sorrow that in the course of preparation of this monograph one of the Editors, Professor Kenichi Fukui, Nobel Laureate of...

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Chemistry of Carbon Nanotubes phần 3 potx

Ngày tải lên : 06/08/2014, 13:22

... Chemistry of Carbon Nanotubes of translocation, a prerequisite for nanoscale separation devices 5.3 Encapsulation of Liquids A particular area of interest is the use of carbon tubes in nanofluidics ... internal cavities of tubes.411 Comparison of the catalytic activities of immobilized enzyme with those of the free species in the hydrolysis of penicillin showed that a significant amount of the inserted ... by TEM One of the most exotic applications of CNT filled with a molten metal was the preparation of miniaturized thermometers The group of Bando described how the height of a column of liquid...

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synthesis of carbon nanotubes and polymers to increase the performance of polymer blends

Ngày tải lên : 14/11/2014, 12:32

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Comprehensive molecular dynamics simulations of carbon nanotubes under axial force or torsion vibration and new continuum models

Ngày tải lên : 09/09/2015, 11:19

... properties of carbon nanotubes 1.1.2 Mechanical properties of CNT and its characterization 1.1.3 Applications of CNT 12 1.2 Computational models to study mechanics of carbon nanotubes ... Effect of L on τ- response of SWCNT 88 Figure 4.3: Effect of D on τ- response of SWCNT 88 Figure 4.4: Definition of twist direction in chiral SWCNT 89 Figure 4.5: Comparison of ... mechanical properties and behaviour of CNTs are reported 1.1 Properties and applications of carbon nanotubes 1.1.1 Geometric properties of carbon nanotubes Multi-walled carbon nanotube (MWCNT) was first...

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Processing and applications of carbon nanotubes and graphene

Ngày tải lên : 10/09/2015, 08:35

... 1.3 Dispersion of carbon nanotubes 1.4 Applications of carbon nanotubes 10 1.5 Structure and morphology of graphene 12 1.6 Properties of graphene 14 ... classified into single-walled carbon nanotubes (SWCNTs), double-walled carbon nanotubes (DWCNTs) and multi-walled carbon nanotubes (MWCNT) according to the number of graphene sheet layers (a) ... functionalization treatment of CNTs Figure 1.6 Schematic presentation of a functionalization process of oxidized CNTs [25] 1.4 Applications of carbon nanotubes CNTs have a lot of attractive applications...

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