Results 231 to 240 of about 2,278,860 (251)

Structural characterization of cup-stacked-type nanofibers with an entirely hollow core

Applied Physics Letters, 2002
Straight long carbon nanofibers with a large hollow core obtained by a floating reactant method show a stacking morphology of truncated conical graphene layers, which in turn exhibit a large portion of open edges on the outer surface and also in the inner channels.
M. Endo, Y. A. Kim, T. Hayashi, Y. Fukai, K. Oshida, M. Terrones, T. Yanagisawa, S. Higaki, M. S. Dresselhaus   +8 more
openaire   +1 more source

Formation and atomic structure of boron nitride nanotubes with a cup-stacked structure

Solid State Communications, 2007
Abstract Boron nitride (BN) nanotubes were synthesized by annealing Fe 4 N/B powder at 1000  ∘ C for 1 h in a nitrogen gas atmosphere, and large amounts of BN nanotubes with a cup-stacked structure were obtained after a purification process. The atomic structures of the cup-stacked BN nanotubes were investigated by high-resolution electron microscopy
Takeo Oku, Naruhiro Koi, Katsuaki Suganuma, Rodion V. Belosludov, Yoshiyuki Kawazoe   +4 more
openaire   +1 more source

Positronium Formation in Alkali Metal-intercalated Cup-stacked Carbon Nanofibers

Journal of the Physical Society of Japan, 2005
Positrons injected into alkali metal-intercalated cup-stacked carbon nanofibers convert to positronium (Ps) atoms with a quite high yield of ca. 25%, which is insensitive to insertion of alkali metal intercalant layers and charge transfer from alkali metal to graphene sheets.
Hideoki Murakami, Toshihiro Hiejima, Mizuka Sano   +2 more
openaire   +1 more source

Atomic structures and stability of boron nitride nanotubes with a cup-stacked structure

Diamond and Related Materials, 2005
Abstract Boron nitride (BN) nanotubes were prepared as mixtures of α-Fe 2 O 3 , B and carbon powders, followed by annealing at 1100 °C for 2 h on alumina boats in a furnace under nitrogen atmosphere. BN nanotubes with cup-stacked structures were observed by high-resolution electron microscopy, and molecular mechanics calculation showed that the ...
Atsushi Nishiwaki, Takeo Oku, Hisato Tokoro, Shigeo Fujii   +3 more
openaire   +1 more source

Water Confined in Hydrophobic Cup-Stacked Carbon Nanotubes beyond Surface-Tension Dominance

The Journal of Physical Chemistry Letters, 2019
Water confined in carbon nanotubes (CNTs) can exhibit distinctly different behaviors from the bulk. We report transmission electron microscopy (TEM) observation of water phases inside hydrophobic cup-stacked CNTs exposed to high vacuum. Unexpectedly, we observed stable water morphologies beyond surface-tension dominance, including nanometer thin free ...
Qin-Yi Li, Ryo Matsushita, Yoko Tomo, Tatsuya Ikuta, Koji Takahashi   +4 more
openaire   +2 more sources

Influence of Cup Stacking on Hand-Eye Coordination and Reaction Time of Second-Grade Students

Perceptual and Motor Skills, 2004
Cup stacking has been adopted recently by many physical education programs to enhance rudimentary motor skills such as hand-eye coordination and ambidexterity as well as quickness and concentration; however, no empirical evidence has been published to support these claims.
Brian E, Udermann, Steven R, Murray, John M, Mayer, Kenneth, Sagendorf   +3 more
openaire   +2 more sources

Unstacking of Cup-Stacked Carbon Nanotubes

Synfacts, 2007
S. Fukuzumi, K. Saito, M. Ohtani
openaire   +1 more source

Fabrication of highly crystalline NbOx nanotube/cup-stacked CNT nanocomposites.

Journal of nanoscience and nanotechnology, 2012
Carbon nanotubes (CNTs) are promising catalyst supports for fuel cell applications. Metal oxide/CNT nanocomposites are also being studied for dye-sensitized solar-cell, photocatalyst, and sensor applications. The fabrication of nanocomposites consisting of highly crystalline NbOx nanotubes and cup-stacked carbon nanotubes (CSCNTs) is reported herein ...
Sayaka, Suzuki, Katsuya, Teshima, SunHyung, Lee, Kunio, Yubuta, Takahiro, Ishizaki, Toetsu, Shishido, Shuji, Oishi   +6 more
openaire   +1 more source

Adapting Task Difficulty in a Cup-Stacking Rehabilitative Task

Companion of the 2024 ACM/IEEE International Conference on Human-Robot Interaction
Melina Daniilidis, Nathaniel Steele Dennler, Maja J. Mataric, Stefanos Nikolaidis   +3 more
openaire   +1 more source

Fabrication of cup-stacked carbon nanofiber/apatite composites

Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan, 2011
Miao, Chengyu, Yamaguchi, Tomohiro, Kitajima, Kunio, Endo, Morinobu, Saito, Naoto, Taruta, Seiichi   +5 more
openaire   +1 more source