nanomaterials nanotubes and nanomedicine

... radiation (50 kV, 40 mA) and a scan speed of 0.5°/min in h–2h mode The divergence, anti-scatter and receiving slits were fixed at 1o The crystallite size of AlFn(OH)3Àn (n = 1.5, 1.62 and 1.65) was calculated ... bath for 30 and collecting the fragments on holey carbon copper-supported grids Nitrogen adsorption and desorption isotherms were recorded at 77 K using an Accelerated Surface Area and Porosimetry ... open circles – anatase TiO2), and (c) AAO membranes treated by liquid phase deposition for h with Ti/Al ratio of Recently, Shyue and co-workers [18] formed TiO2 nanotubes by coating the walls...

Ngày tải lên: 19/03/2014, 16:48

... tract, and skin [7] for consumer, occupational, and environmental exposure scenarios Determining the retained dose and effects at the portal I Linkov and J Steevens (eds.), Nanomaterials: Risks and ... the dermal layers and skin is an important organ and can serve as a potential route of exposure and should not be overlooked I Linkov and J Steevens (eds.), Nanomaterials: Risks and Benefits, © ... solutions, and solubility are 36 I LYNCH AND A ELDER important parameters QDs and metal NPs have been used extensively to evaluate the barrier function of the skin and respiratory tract in regards to nanomaterials...

Ngày tải lên: 04/06/2014, 13:57

... (Editor) VOLUME 17 Molecular and Nano Electronics: Analysis, Design and Simulation J.M Seminario (Editor) VOLUME 18 Nanomaterials: Design and Simulation P.B Balbuena and J.M Seminario (Editors) ... difference between the singlet and triplet states Using the LANDZ basis set the singlet and the triplets correspond to D3h and C2v point groups The bond lengths, angles, and energies of Pt are shown ... Saenz, Carolina Herrera, and Jorge M Seminario Structural Properties of Pure and Binary Nanoclusters Investigated by Computer Simulations 35 Giulia Rossi and Riccardo Ferrando Computer Simulation...

Ngày tải lên: 04/06/2014, 14:38

... classes of nanomaterials: discrete nanomaterials, nanoscale device materials, and bulk nanomaterials Discrete nanomaterials or dn materials are material elements that are freestanding and 1–10 ... As always with respect to safety and risk management, the key is to (a) know and document the risks, (b) know and document safe handling procedures and (c) know and document emergency response ... chemical and biomedical engineers and physicists The objective is to provide the reader with the connections needed to understand the intense activity in the area of the mechanics of nanomaterials, and...

Ngày tải lên: 04/06/2014, 15:07

... downloaded at www.jcrystal.com My earliest implementation of routines for the creation and visualization of nanotubes and nanocones was realized in JSV (Java Structure Viewer), a program which I wrote ... generating a flat graphene sheet and then rolling it into a tube or a cone Two types of nanotubes can be capped with parts of the well-known Buckyball (C60) These are the {5,5} and the {9,0} tubes, which ... {7,0}, {10,0}, {13,0} and {16,0} tubes {7,0} Nanotube Bundle A bundle of seven {7,0} single-walled carbon nanotubes (SWCNT) {7,3} Nanotube Bundle A bundle of seven {7,3} nanotubes Inside {5,3}...

Ngày tải lên: 04/06/2014, 15:20

... conductivity of carbon nanotubes and graphene in epoxy nanofluids and nanocomposites Mario Martin-Gallego1, Raquel Verdejo1, Mohamed Khayet2, Jose Maria Ortiz de Zarate2, Mohamed Essalhi2, and Miguel Angel ... synthesis and characterization of nanofillers and nanocomposites, participated in the discussion, and drafted the manuscript RV helped in nanocomposite preparation, participated in the discussion, and ... vibrational 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;...

Ngày tải lên: 20/06/2014, 23:20

... those D band, D0 band and G band peaks changed only slightly Additional Raman peaks from the ZnO shells appeared; the relatively strong peaks at 427 and 567 cm-1 correspond to Ehigh and A1 (LO) ... distortion [18] The intensity ratio of the D0 over the G band (ID0 /IG) increases with a decrease in the graphite crystalline domain The D band and D0 band peak are very strong, indicating that the CNTs ... cm-1 corresponding to sp2-hybridized carbon and a D band at *1346 cm-1 originating from disordered carbon [17, 18] In addition to the D band, the D0 band as a shoulder of the Nanoscale Res Lett...

Ngày tải lên: 21/06/2014, 08:20

... Ni nanotube and nanowire arrays obtained under different conditions: (a), (c) and (e) are top views of samples 1, and respectively; (b), (d) and (f) are side views of the samples 1, and respectively ... electrodeposition process for Ni nanotubes and nanowires Figure 4a provides a clear understanding of the growth mechanism of Ni nanotubes The junction between the electrode surface and the bottom edge of ... mA) and sample (-0.8 V, 60 min, 0.04–0.26 mA) The morphology of the Ni nanostructure arrays was investigated using a JEOL JSM-6390LV SEM The structure and microstructure of the Ni nanotubes and...

Ngày tải lên: 21/06/2014, 20:20

... carbon and the methane decomposition rate depend on the structure and nature of the active catalytic sites and the size of the catalyst particles [21], alloy hydride catalysts with low cost and ... around 1589 cm–1 (G-band) [20] is observed In addition, a peak centred at around 1367 cm–1 (D- Fig EDAX spectra of (a) alloy filled MWNTs, and (b) Ni nanowire encapsulated MWNTs band), mainly due ... 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 for Nifilled MWNTs is due to the non-uniform filling of Ni, resulting...

Ngày tải lên: 22/06/2014, 22:20

... One-dimensional and quasi-one-dimensional materials such as nanotubes and nanowires demonstrate many extreme properties that can be tuned by controlling their structure and diameter Nanotubes, nanowires, and ... important and promising nanomaterials and nanostructures The role of nanomaterials in industries is growing Nanofibers are already used for insulation and reinforcement of composites, and many ... the functionalization and solubilization of carbon nanotubes, their self-assembly, film and fiber formation, and sensor and biosensor preparation Some basics on carbon nanotubes are introduced...

Ngày tải lên: 27/06/2014, 10:20

Ngày tải lên: 14/11/2014, 12:32

... Li Jing, and Sheng Su in CSMM and Mr Tan Choon Wan from the physics workshop I would also like to thank Prof Kang En-Tang, Dr Liu Yiliang and Dr Liu Gang from Department of Chemical and Biomolecular ... References 18 II Fabrication and characterization 2.1 Introduction 2.2 23 Preparation of aluminum oxide templates, titanium oxide nanotubes and magnetic nanowires and deposition of thin film 2.2.1 ... work: an aqueous mixture of X acetic acid and HF solution and a mixture of NH4F and water in ethylene glycol The concentration of NH4F, the applied voltage and the thickness of the sputtered titanium...

Ngày tải lên: 09/09/2015, 18:58

... armchair chirality (n = m) has no band gap between the conduction band and the valence band, so it is metallic A SWCNT with n - m = 3q (q is an integer) has a quite small band gap It thus exhibits quasi-metallic ... rad, and the gap between cone and plate was 0.5 mm During measurement, the gels were sandwiched between the cone and plate A periodic shear strain: γ = γ0sin(tω) (9) was applied to the cone, and ... spectra of pristine SWCNTs (solid curve) and a SWCNT film (dashed curve) (b) Raman intensity ratios of the D band to G band (ID/IG) of (i) asreceived SWCNTs and a SWCNT:POETE gel after successively...

Ngày tải lên: 10/09/2015, 08:35

... 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 ... SA-beads and COOH-beads 81 2.2.4.4 Hybridization with TG and NTG .81 2.2.4.5 Hybridization with conventional and CNT-based labels .82 2.2.5 Colorimetric detection 82 2.3 Results and ... carbon nanotubes and biosensors I want to thank A/P Sheu Fwu-Shan (NUS) and A/P Poenar D Puiu (NTU) for their guidances Special thanks to Dr Eishi Igata (NTU) for sharing his insights and experiences...

Ngày tải lên: 12/09/2015, 09:28

... Tsang and co-workers studied the interaction of protein, enzymes and DNA with carbon nanotubes They found that DNA molecules tended to cover the surface of nanotubes and the small proteins and ... al., 1996; Da Ros and Prato, 1999; Tagmatarchis and Shinohara, 2001; Bosi et al., 2003; Nakamura and Isobe, 2003; Sarova et al., 2006; Bianco and Da Ros, 2007) 1.2 Cell Protection and Antioxidant ... fullerene and light, so the polymer was tested on mice affected by bone tumor After injection and irradiation, tumor size and weight were reduced and the mouse survival time was extended (Jiang and...

Ngày tải lên: 17/02/2014, 05:20

... 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 ... 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 Huang ...

Ngày tải lên: 05/03/2014, 17:20

... H2SO4 Properties of Esters Esters give flowers and fruits their pleasant fragrances and flavors Hydrolysis: reaction with water (breaking a bond and adding the elements of water) An ester Heat ... O RCO R ' + NaOH Sodium acetate Ethanol Properties of Esters • Esters react with ammonia and with 1° and 2° amines to form amides O O OCH2 CH3 + NH3 Ethyl 2­phenyl acetate NH2 + CH3 CH2 OH 2­Phenylacetamide ... a carboxylic acid by first converting the carboxylic acid to an ester by Fischer esterification and then reaction of the ester with an amine Amides Amides In an amide, the -OH group in the carboxyl...

Ngày tải lên: 15/03/2014, 22:14

... research, toxicity concerns of nanomaterials and nanoparticles during manufacturing and/ or implantation will be covered as well The promise of nanomaterials for bone and cartilage tissue engineering ... nanometer in dimension and cells directly interact with (and create) nanostructured extra-cellular matrices (ECM), the biomimetic features and excellent physiochemical properties of nanomaterials play ... nano-imprinting, photolithography, and electron beam or nanosphere lithographies [4]) are available to synthesize nanomaterials with ordered or random nanotopographies (Fig 1, [6—9]) Nanomaterials can also...

Ngày tải lên: 20/03/2014, 13:05

... band into the conduction band leaving a hole behind Excited state conduction-band electrons and valence-band holes can recombine and dissipate as heat The valence-band holes are powerful oxidants, ... filled valence band and an empty conduction band When a photon with energy of hν matches or exceeds the bandgap energy of the semiconductor, an electron is excited from the valence band into the ... TiO2 AND CARBON NANOTUBES By Sung-Hwan Lee December, 2004 Chair: Wolfgang M Sigmund Major Department: Materials Science and Engineering Nanocomposite particles and fibers based on TiO2 and multi-walled...

Ngày tải lên: 20/03/2014, 13:06

... SEM and TEM images of ␣-Fe2 O3 nanotubes in sample S1 (a and b), Fe3 O4 nanotubes in sample S2 (c and d) and ␥-Fe2 O3 nanotubes in sample S3 (e and f) B Lv et al / Particuology (2008) 334–339 and ... outer and inner diameters of 70–120 nm and 45–80 nm, respectively Fig 3(c) and (d) show the morphologies of Fe3 O4 nanotubes (sample S2), with their well retained nanotube structure Fig 3(e) and ... Fig 3(d) and (e) show that there was no obvious change in the length and diameter of the nanotubes Comparison of the TEM images of the three samples indicates that the Fe3 O4 and ␥-Fe2 O3 nanotubes...

Ngày tải lên: 20/03/2014, 13:06