Results 131 to 140 of about 2,354 (185)

Synthesis, Purification and Opening of Short Cup-Stacked Carbon Nanotubes

Journal of Nanoscience and Nanotechnology, 2009
A simple method is demonstrated to synthesize high-quality cup-stacked carbon nanotubes (CSCNTs) with short length. The as-synthesized CSCNTs are 0.2-3.2 microm in length, even shorter than the ball-milled long CSCNTs (approximately 7 microm). These CSCNTs have a diameter of 80-120 nm and a hollow channel of 60-100 nm along the nanotube axis. Moreover,
Liu, Qingfeng, Ren, Wencai, Liu, Bilu, Chen, Zhi-Gang, Li, Feng, Cong, Hongtao, Cheng, Hui-Ming   +6 more
openaire   +3 more sources

Fluorination of Cup-stacked Carbon Nanotubes, Structures and Properties

MRS Proceedings, 2004
ABSTRACTCup-stacked carbon nanotubes (Cup-CNTs) was fluorinated in a temperature range RT-500• •by 0.5–1 atm elemental fluorine. The F/C atomic ratio (CF0.4-CF1.2) and the color are strongly dependent on the fluorination conditions. The color of fluorinated Cup-CNTs (F-Cup-CNTs) varies from black, through gray and yellow to white.
Hidekazu Touhara, Akiko Yonemoto, Kazunao Yamamoto, Shingo Komiyama, Shinji Kawasaki, Fujio Okino, Takashi Yanagisawa, Morinobu Endo   +7 more
openaire   +1 more source

A reversible strain-induced electrical conductivity in cup-stacked carbon nanotubes

Nanoscale, 2013
We have used in situ current-voltage measurements of cup-stacked carbon nanotubes (CSCNTs) to establish reversible strain induced (compressive bending) semiconducting to metallic behavior. The corresponding electrical resistance decreases by two orders of magnitude during the process, and reaches values comparable to those of highly crystalline multi ...
Takuya, Hayashi, Thomas C, O'Connor, Katsuhisa, Higashiyama, Kohei, Nishi, Kazunori, Fujisawa, Hiroyuki, Muramatsu, Yoong Ahm, Kim, Bobby G, Sumpter, Vincent, Meunier, Mauricio, Terrones, Morinobu, Endo   +10 more
openaire   +2 more sources

Damping Properties of Cups-Stacked Carbon Nanotubes (CSCNTs)/RTM6 Composites

Advanced Materials Research, 2012
Carbon nanotubes have better physical and mechanical behaviors than the traditional materials, in this study cups-stacked carbon nanotubes (CSCNTs) were filled into epoxy nancomposites to fabricate CSCNTs/epoxy nanocomposites. RTM6 was used by epoxy resin system. The cups-stacked carbon nanotubes (CSCNTs) were dispersed into the RTM6 matrix.
Yan Liu, Rui Feng Li, Hua Xin Peng, Andy Limmack, Zhi Wu Han   +4 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

Nanostructured V2O5.nH2O/cup-stacked carbon nanotube composite with remarkable Li+ specific capacity

Solid State Ionics, 2021
Abstract Nanostructures for lithium intercalation can be obtained by combining carbon nanotubes with nanoparticles, to achieve a composite that can be applied as electrochemical energy storage device. Depending on the chemical composition and architecture of the nanostructure, it can be used to develop batteries, supercapacitors, or hybrid battery ...
Neto, DBD, Parmar, R, Matsubara, EY, Minicucci, M, Gunnella, R, Rosolen, JM   +5 more
openaire   +2 more sources

Effect of ball milling on morphology of cup-stacked carbon nanotubes

Chemical Physics Letters, 2002
The effect of grinding on cup-stacked carbon nanotubes is studied. The application of a bending force on the sidewall of such carbon nanotubes, that is higher than the Van der Waals force acting between the cups, results in the shortening of carbon nanotubes and the formation of nano-barrels exhibiting an increased number of accessible active sites ...
Y.A. Kim, T. Hayashi, Y. Fukai, M. Endo, T. Yanagisawa, M.S. Dresselhaus   +5 more
openaire   +1 more source

A simple route to short cup-stacked carbon nanotubes by sonication

Carbon, 2010
A simple but effective way of producing short cup-stacked carbon nanotubes with high quality is demonstrated using sonication in an ethanol/distilled water mixture. The substantial removal of amorphous carbon deposited on the truncated conical layer-stacked nanotubes by controlled air oxidation was a critical precondition to cut the nanotubes without ...
Daisuke Shimamoto, Kazunori Fujisawa, Hiroyuki Muramatsu, Takuya Hayashi, Yoong Ahm Kim, Takahashi Yanagisawa, Morinobu Endo, Mildred S. Dresselhaus   +7 more
openaire   +1 more source

Processing and characterization of epoxy nanocomposites reinforced by cup-stacked carbon nanotubes

Polymer, 2005
The effect of the dispersion, ozone treatment and concentration of cup-stacked carbon nanotubes on mechanical, electrical and thermal properties of the epoxy/CSCNT nanocomposites were investigated. Ozone treatment of carbon fibers was found to increase the surface oxygen concentration, thereby causing the contact angle between water, epoxy resin and ...
Young-Kuk Choi, Yasuo Gotoh, Koh-ichi Sugimoto, Sung-Moo Song, Takashi Yanagisawa, Morinobu Endo   +5 more
openaire   +1 more source

Electrochemical Determination of Hydroquinone Using a Tyrosinase-Based Cup-Stacked Carbon Nanotube (CSCNT)/Carbon Fiber Felt Composite Electrode

Analytical Letters, 2021
This work shows that the cup-stacked carbon nanotube/carbon fiber felt composite electrode (CSCNT/felt) is a promising electronic conductive matrix to develop biosensors.
Wyllerson Evaristo Gomes, Thainá Godoy Beatto, Lara Cristina Marcatto, Elaine Yoshiko Matsubara, Renata Kelly Mendes, José Maurício Rosolen   +5 more
openaire   +1 more source