frontiers of carbon nanotubes and beyond
Báo cáo hóa học: " Thermal conductivity of carbon nanotubes and graphene in epoxy nanofluids and nanocomposites" pptx
... 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 ... cross-link density and hence, on the final properties of the system Thus, we aimed at studying the effect of two types of carbon- based nanofillers, in particular, nanotubes and graphene sheets, ... modes of the graphene and of the polymeric matrix plays a dominant role on the thermal conductivities of the liquid and solid states Keywords: carbon nanotubes; graphene; nanocomposites; nanofluids;...
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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
... preparation of hydride catalysts Figure 2b shows the EDX spectra of Nifilled MWNT TEM and HRTEM images of SWNTs obtained at a growth temperature of 950°C are respectively shown in Fig 3a and b It ... the yield of carbon with the growth temperature has been plotted and shown in Fig It could be seen that the carbon yield increased with increasing growth temperature and a maximum of around 146% ... MWNTs band), mainly due to defects [20] is also observed Raman spectra for SWNTs show the presence of RBM, at 388.9 cm–1, in addition to the G- and Dbands The increase in the intensity of D-band...
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Processing and applications of carbon nanotubes and graphene
... 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 1.6.1 Electronic and ... Figure 6.2 SEM images of (a) GO and (b) Zn-rGO, AFM images of (c) GO and (d) Zn-rGO, (e) TEM image of a free standing Zn-rGO sheet suspended on a lacey carbon TEM grid and (f) selected area electron ... 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)...
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The Science and Technology of Carbon Nanotubes potx
... Chapter Synthesis and Purification of MultiWalled and Single-Walled Carbon Nanotubes M.Yumura Chapter Electron Diffraction and Microscopy of Carbon Nanotubes S Amelinckx, A Lucas and P Lambin ... Structure and Raman Effect of Single-Walled Carbon Nanotubes R Saito, G Dresselhaus and M S Dresselhaus 51 Chapter Behaviour of Single-Walled Carbon Nanotubes in Magnetic Fields H Ajiki and T Ando ... Structures of Multi-Walled and SingleWalled Carbon Nanotubes EELS Study T Hanada, Y Okada and K Yase 29 Chapter Electronic Structure of Single-Walled Carbon Nanotubes K Tanaka, M Okada and Y...
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electrical and thermal interface conductance of carbon nanotubes grown under dc bias voltage
... existence of multiple G peaks The quality of the fit in the low-energy and high-energy tails of the D- and G-bands, respectively, is good The assignment of the peak components of the D- and G-bands ... 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 ... quality of the CNTs Yoshida et al.32 have shown that the FWHM 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...
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Báo cáo hóa học: "Synthesis of carbon nanotubes with and without catalyst particles" doc
... Shaw EJ, Schlogl R, Hart AJ, Hofmann S, Wardle BL: Nanoscale Zirconia as a Nonmetallic Catalyst for Graphitization of Carbon and Growth of Single- and Multiwall Carbon Nanotubes J Am Chem Soc 2009, ... Page of Figure Energy filtered TEM images of carbon nanotubes produced from phenylboronic acid in a MgO matrix The images show a carbon outer shell and a core (nanowire) comprised B, O and Mg ... decompose the hydrocarbon Reilly and Whitten proposed a free radical condensate (FRC) forms which provides carbon species through a leaving group The breaking of carbon- hydrogen or carbon- carbon bonds...
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Báo cáo hóa học: " Atomic Layer Deposition of ZnO on Multi-walled Carbon Nanotubes and Its Use for Synthesis of CNT–ZnO " doc
... of PECVD-grown CNTs b TEM image of ALD ZnO-coated CNTs c and d SEM images of ALD ZnO-coated CNTs e TEM image of ALD AlxOy-coated CNTs Fig Raman spectrum of CNTs before (a) and after (b) ALD of ... Raman spectrum of our PECVD MWCNTs (Fig curve a) shows a strong D band, indicating the existence of defects on the tube wall Compared to MWCNTs, the surfaces of the single-walled carbon nanotubes ... morphology of the PECVD CNTs prior to deposition Most of the nanotubes are multiwall tubes, and the average diameter of the CNTs is about nm Figure 1b shows the typical TEM image of ALD ZnO-coated...
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Báo cáo hóa học: " Aggregate structure of hydroxyproline-rich glycoprotein (HRGP) and HRGP assisted dispersion of carbon nanotubes" doc
... 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 ... opened up and displayed the random networks of linear fibrils Since the polyproline-II helix is a left-handed helix with about residues per turn and a pitch of 9.4 angstrom, the length of YK20 is ... 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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The Science and Technology of Carbon Nanotubes III ppt
... Chapter Synthesis and Purification of MultiWalled and Single-Walled Carbon Nanotubes M.Yumura Chapter Electron Diffraction and Microscopy of Carbon Nanotubes S Amelinckx, A Lucas and P Lambin ... Structure and Raman Effect of Single-Walled Carbon Nanotubes R Saito, G Dresselhaus and M S Dresselhaus 51 Chapter Behaviour of Single-Walled Carbon Nanotubes in Magnetic Fields H Ajiki and T Ando ... Structures of Multi-Walled and SingleWalled Carbon Nanotubes EELS Study T Hanada, Y Okada and K Yase 29 Chapter Electronic Structure of Single-Walled Carbon Nanotubes K Tanaka, M Okada and Y...
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The Science and Technology of Carbon Nanotubes pptx
... Chapter Synthesis and Purification of MultiWalled and Single-Walled Carbon Nanotubes M.Yumura Chapter Electron Diffraction and Microscopy of Carbon Nanotubes S Amelinckx, A Lucas and P Lambin ... Structure and Raman Effect of Single-Walled Carbon Nanotubes R Saito, G Dresselhaus and M S Dresselhaus 51 Chapter Behaviour of Single-Walled Carbon Nanotubes in Magnetic Fields H Ajiki and T Ando ... Structures of Multi-Walled and SingleWalled Carbon Nanotubes EELS Study T Hanada, Y Okada and K Yase 29 Chapter Electronic Structure of Single-Walled Carbon Nanotubes K Tanaka, M Okada and Y...
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Comprehensive molecular dynamics simulations of carbon nanotubes under axial force or torsion vibration and new continuum models
... 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 ... modelling and computational approaches for studying the mechanical properties and behaviour of CNTs are reported 1.1 Properties and applications of carbon nanotubes 1.1.1 Geometric properties of carbon ... List of tables xvii List of figures xix List of symbols and acronyms .xxvii Chapter Introduction 1.1 Properties and applications of carbon nanotubes...
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Carbon nanotubes and branched DNA based nucleic acid assays towards a PCR free detection and quantification of nucleic acids
... amplify signal of single hybridization event The multiple labelling strategies and the types of carrier involved are reviewed in Section 2.1 of Chapter and Section 5.1 of Chapter 1.2 Carbon Nanotubes ... scientific user facility sponsored by the U.S Department of Energy's (DOE's) Office of Biological and Environmental Research and the core R&D Laboratory of Fungal Biotechnology funded by the DOE Biomass ... turn improves the assay sensitivity, and (III) a single-strand DNA (ssDNA) standard bearing the same sequence and length as of the target gene was created and accurately quantified for use in...
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Controlled fabrication and assembly of carbon nanotubes based nanostructures
... the temperature and the pressure of operation, the volume and concentration of source gas, the size and the pretreatment of metallic catalyst, and the time of reaction The type of carbon nanotube ... mechanical and chemical properties Chapter Introduction Figure1.2 Single-walled and Multi-walled Carbon Nanotubes There are two types of carbon nanotubes: single-walled nanotubes (SWCNTs) and multi-walled ... 92 v List of Figures List of Figures Figure 1.1 Density of electronic states N(E) as a function of the dimensionality of the structure Figure 1.2 Single-walled and Multi-walled Carbon Nanotubes...
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Optical limitng and field emission studies of carbon nanotubes
... OPTICAL LIMITING AND FIELD EMISSION STUDIES OF CARBON NANOTUBES GOHEL AMARSINH B.Sc (Hons.) SUPERVISOR A/PROF ANDREW WEE THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE DEPARTMENT OF PHYSICS NATIONAL ... 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 ... Limiting Properties of a-Au and a-Ag Coated Carbon Nanotubes Introduction Surface Plasmon Absorption in Au and Ag Nanoparticles Experimental Procedure 3.3.1 Synthesis of Random Carbon Nanotubes 39 39...
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Deposition of carbon nanotubes on si nanowires by chemical vapor deposition
... 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 ... 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 ... crystalline Si core and a sheath of multi-walled CNTs; (b) a nanowire with a part of the core transformed into b-SiC and coated with a sheath of CNTs b-SiC nanowires and graphitic carbon, as shown...
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purification of carbon nanotubes
... strategy for cutting and purification of single-walled carbon nanotubes Carbon 2007;45(10):1972–8 [134] Bandow S, Asaka S, Zhao X, Ando Y Purification and magnetic properties of carbon nanotubes Appl ... weight of the original carbon sample Furthermore, they found that the yield depended crucially on the flow rate of oxidant, the amount of initial sample, the manner of packing of the carbon, and ... reactions of Fe and Ni impurities can be considered as an indication of the extent of removal of the amorphous carbon, and the optimum electrochemical oxidation time for the purification of the as-grown...
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Mechanical Properties of Carbon Nanotubes potx
... Properties of Carbon Nanotubes 297 Fig HREM images of bent nanotubes under mechanical duress (a) and (b) single kinks in the middle of SWNT with diameters of 0.8 and 1.2 nm, respectively (c) and (d) ... observed and is responsible for the apparent softening of MWNT of larger diameters A variety of largely and reversibly distorted (estimated up to 15% of local strain) configurations of the nanotubes ... indicative of the exceptional axial stiffness of these materials More recently studies Mechanical Properties of Carbon Nanotubes 293 Fig Top panel: bright field TEM images of free-standing multi-wall carbon...
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Frontiers of Radiation Therapy and Oncology Vol. 34 doc
... Development of Normal Tissue Damage – Fiction and Facts Klaus Rudiger Trott ¨ St Bartholomew’s and the Royal London School of Medicine and Dentistry, Queen Mary and Westfield College, University of London, ... radiation treatment of head and neck cancers Acta Oncol 1988;27:185–194 Prof K.R Trott, Department of Radiation Biology, St Bartholomew’s and the Royal London School of Medicine and Dentistry, Charterhouse ... understood, and is likely complex This paper will overview our current understanding only of the effects of epidermal growth factor (EGF) and its receptor (EGFR) in cell and tumor response to radiation and...
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applied physics of carbon nanotubes, 2005, p.361
... 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 and ... 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 might ... Dispersion and Separation of Carbon Nanotubes 10.3 Separation of Carbon Nanotubes Dispersed by Non-ionic Surfactant 10.4 Structure and Electrostatics of the...
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