Results 221 to 230 of about 4,127 (270)
Some of the next articles are maybe not open access.
A kind of conical cup-stacked carbon nanotube
Fullerenes Nanotubes and Carbon Nanostructures, 2019AbstractIn this article, a kind of conical cup-stacked carbon nanotubes (CSCNTs) grown by the microwave irradiation of the mixture of ferrocene and carbon black nanoparticles is reported. They are characterized by the long-cone shape, the nearly unchanged wall thickness and the huge hollow core.
Huanpeng Liu
exaly +2 more sources
Synthesis, Purification and Opening of Short Cup-Stacked Carbon Nanotubes
Journal of Nanoscience and Nanotechnology, 2009A 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,
Qingfeng Liu, Wencai Ren, Bilu Liu
exaly +6 more sources
Growth of a cup-stacked carbon nanotube carpet with a superhydrophobic surface
New Carbon Materials, 2013A carpet structure composed of high purity cup-stacked carbon nanotubes (CSCNTs) was synthesized by a catalytic chemical vapor deposition method. In a 15-min growth time, the CSCNT carpet with a height up to ∼300 μm and carbon purity above 99.9 wt.% was prepared.
Shisheng Li, Peng-Xiang Hou
exaly +2 more sources
The activation and hydrogen storage characteristics of the cup-stacked carbon nanotubes
Diamond and Related Materials, 2019Abstract In this study, the cup-stacked carbon nanotubes (CSCNTs) are chemically modified and used for the hydrogen storage for the first time. The SEM and TEM analyses indicate that because they are formed by the stacking of the truncated conical graphene layers the inner- and outer-edges of which are completely exposed, during KOH activation the ...
Huanpeng Liu, Chenyu Yang
exaly +2 more sources
Processing and characterization of epoxy nanocomposites reinforced by cup-stacked carbon nanotubes
Polymer, 2005The 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 ...
Yasuo Gotoh, Morinobu Endo
exaly +2 more sources
Exposed Edge Planes of Cup-Stacked Carbon Nanotubes for an Electrochemical Capacitor
Journal of Physical Chemistry Letters, 2010The end sites of graphitic planes and their catalytic, chemical, physical, and electrochemical roles have been a longstanding issue in the surface chemistry of carbon science. In this study, complete exposure of the active edge sites on the outer surface of catalytically grown cup-stacked carbon nanotubes is accomplished using a conventional ...
In Young Jang +2 more
exaly +2 more sources
Influence of Participation in a Cup-Stacking Unit on Timing Tasks
Perceptual and Motor Skills, 2005Cup stacking is a relatively new activity which has been promoted at conferences for physical educators as having many direct and indirect benefits, such as improved quickness. This study examined the influence of a cup-stacking instructional unit on reaction and anticipation times of 69 children in Grades 2 and 4.
Melanie A, Hart +2 more
openaire +3 more sources
Semiconducting properties of cup-stacked carbon nanotubes
Carbon, 2009The current–voltage characteristics of individual cup-stacked carbon nanotubes (CSCNTs) were investigated in situ inside the transmission electron microscope. Different from other quasi-1D carbon structures such as multi-walled carbon nanotubes, carbon nanofibers or graphitic fibers that normally behave as a metallic conductor of electrons, individual ...
Liu, Qingfeng +6 more
openaire +4 more sources