A5003246455- Carbon Nanotubes in Composites
- Graphene research and applications
- Fullerene Chemistry and Applications
- Diamond and Carbon-based Materials Research
- Nanotechnology research and applications
- Boron and Carbon Nanomaterials Research
- Ion-surface interactions and analysis
- Force Microscopy Techniques and Applications
- Mechanical and Optical Resonators
- Electron and X-Ray Spectroscopy Techniques
- Molecular Junctions and Nanostructures
- Advanced Electron Microscopy Techniques and Applications
- Advanced Materials Characterization Techniques
- nanoparticles nucleation surface interactions
- Mass Spectrometry Techniques and Applications
- Advanced Chemical Physics Studies
- Nanowire Synthesis and Applications
- Electrohydrodynamics and Fluid Dynamics
- Thermal properties of materials
- Quasicrystal Structures and Properties
- Atomic and Molecular Physics
- Advancements in Battery Materials
- Synthesis and Properties of Aromatic Compounds
- Surface and Thin Film Phenomena
- Chemical and Physical Properties of Materials
Toyota Physical and Chemical Research Institute
2020-2023
Toyota Central Research and Development Laboratories (Japan)
2020-2022
Nagoya University
2010-2019
Japan Women's University
2011
Sebelas Maret University
2011
Tsumura (Japan)
2003-2008
Noritake (Japan)
2003-2008
Hokkaido University
2007
Mie University
1997-2006
National Institute for Materials Science
2000
Pulsed laser vaporization of a heated, Fe/Ni or Co/Ni catalyzed, carbon target in argon gas has been used to synthesize single-wall nanotubes (SWNTs). Electron microscopy, x-ray diffraction, and Raman spectroscopy were all study the effect catalyst on tube yield, evolution diameter distribution with increasing growth environment temperature $T$. By controlling range $780<T<1050\ifmmode^\circ\else\textdegree\fi{}\mathrm{C}$, we have able tune tubules from $\ensuremath{\sim}0.81$...
We have manufactured cathode ray tubes (CRTs) equipped with field emitters composed of multiwalled carbon nanotubes. The fabricated CRTs (20 mm in diameter by 74 length) are a triode type, consisting (nanotube emitter arrays), grid and an anode (phosphor screen). lighting elements, which assembled to form giant outdoor display. Stable electron emission, adequate luminance long life demonstrated. CRT elements presented here the first practical products utilizing nanotubes on industrial scale.
Raman scattering spectra of single-wall nanotubes with mean radii 0.55, 0.65, and 1.0 nm show size-dependent multiple splittings the optical phonon peak corresponding to ${E}_{2g}$ mode in graphite. These constitute first experimental evidence for unique feature that they exhibit discrete diameter-dependent dispersions arising from their cylindrical symmetry. The observed dispersion is well explained on basis graphite, shows possibilities predicting controlling basic property zone-folding scheme.
Electron and x-ray-diffraction studies of nanotubes have revealed that the distances between graphitic sheets are larger by a few percent than those in bulk graphite. The mean value interlayer spacings is 0.344\ifmmode\pm\else\textpm\fi{}0.001 nm.
The structure of ${\mathrm{C}}_{60}$ molecules adsorbed on the Cu(111)-(1\ifmmode\times\else\texttimes\fi{}1) surface has been investigated by scanning tunneling microscopy (STM). Bias voltage dependent STM images individual in monolayer film showed unique intramolecular structures with a threefold symmetry. observed agree well those calculated using local density approximation. With charge transfer from Cu(111) substrate to film, molecule ratchets hollow sites.
Arc discharging carbon rods containing 8.8 wt% La 2 O 3 produces a carbonaceous deposit nano-particles (nm-size particles) consisting of graphite shells around core nano-crystals averaging 10-30 nm in diameter but sometimes 3-4 nm. Transmission electron microscopy, nm-size diffraction and energy-loss spectroscopy have revealed that the are La-carbide, LaC , interfaces between carbide flat, no intermediate layers formed.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMass Spectroscopic and ESR Characterization of Soluble Yttrium-Containing Metallofullerenes YC82 Y2C82Hisanori ShinoharaHisanori ShinoharaMore by Hisanori Shinohara, Hiroyasu SatoHiroyasu SatoMore Sato, Yahachi SaitoYahachi SaitoMore Saito, Masato OhkohchiMasato OhkohchiMore Ohkohchi, Yoshinori AndoYoshinori AndoMore AndoCite this: J. Phys. Chem. 1992, 96, 9, 3571–3573Publication Date (Print):April 1, 1992Publication History Published online1 May...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolation and spectroscopic properties of scandium fullerenes (Sc2@C74, Sc2@C82, Sc2@C84)Hisanori Shinohara, Hiroki Yamaguchi, Naoyuki Hayashi, Hiroyasu Sato, Masato Ohkohchi, Yoshinori Ando, Yahachi SaitoCite this: J. Phys. Chem. 1993, 97, 17, 4259–4261Publication Date (Print):April 1, 1993Publication History Published online1 May 2002Published inissue 1 April...
An X-ray crystallographic analysis of a (BEDT-TTF)2C60 CT complex reveals that C60 molecules are sandwiched by BEDT-TTF and their librational motion is suppressed sufficiently at 150 K to show distinctive bond alternation.
We performed in situ transport measurements a transmission-electron microscope (TEM) on individual double-walled carbon nanotubes (DWNT). Using selected-area electron diffraction, the chiral indices of two tubes constituting DWNTs were determined through careful comparison with theory. discuss case DWNT whose have gap at half filling and show finite density delocalized state Fermi level. The exact determination should be reachable any transport-measurement experiment samples that allow TEM...
Field ion-scanning tunneling microscopy was employed to study the monolayer and multilayer adsorption behaviors of C 60 fullerene on Si(100)2×1 surface. The molecules reside stably in trough at room temperature without rotation, encompassing 8 neighbouring dimer-forming surface Si atoms with nearest neighbour distance 12 Å. For first second layers, only local ordering square quasi-hexagonal patterns observed. orderly Stranski-Krastanov mode island formation hexagonal packing observed above...
H. Nagashima, A. Nakaoka, Y. Saito, M. Kato, T. Kawanishi and K. Itoh, J. Chem. Soc., Commun., 1992, 377 DOI: 10.1039/C39920000377
Absorption spectra have been measured in the near-infrared region for a thin-film sample of single-wall carbon nanotubes 1.2–1.5 nm diameter. Two absorption peaks are observed at 0.7 and 1.2 eV. The spectrum has compared with calculation based on tight-binding model taking into account distribution diameter helical arrangement tubes. We found that one-dimensional exciton effect plays an important role fundamental optical transition semiconducting nanotubes.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotothermal investigation of the triplet state carbon molecule (C60)Masahide Terazima, Noboru Hirota, Hisanori Shinohara, and Yahachi SaitoCite this: J. Phys. Chem. 1991, 95, 23, 9080–9085Publication Date (Print):November 1, 1991Publication History Published online1 May 2002Published inissue 1 November 1991https://pubs.acs.org/doi/10.1021/j100176a013https://doi.org/10.1021/j100176a013research-articleACS PublicationsRequest reuse permissionsArticle...
A purification procedure for single-walled nanotubes is presented in this report. novel method that incorporates the hydrothermal treatment along with other treatments such as extraction of fullerenes and oxidation dissolution metal particles used study. The effects each process also discussed by characterizing intermediate products using X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission microscopy.
A bulk bundle (with a diameter of about 100 µ m) single-walled nanotubes (SWNTs), which were obtained after purification process carbon soot containing SWNTs, was used as an electron emitter. Many spikes micro-bundles typical 20–30 nm) SWNTs extruded from the surface Field emission originating individual observed on fluorescent screen 50 mm apart tip. Each micro-bundle gave corresponding bright spot, but no fine structure within spots. probe hole device to measure current single...