نتایج جستجو برای: cnt

تعداد نتایج: 4697  

2015
Ju-Ro Lee Seungmi Ryu Soojin Kim Byung-Soo Kim

Regulating stem cell microenvironment is one of the essential elements in stem cell culture. Recently, carbon nanotube (CNT) has come into the spotlight as a biomaterial that retains unique properties. Based on its high chemical stability, elasticity, mechanical strength, and electrical conductivity, CNT shows great potential as an application for biomedical substrate. Also, properties of CNT c...

Journal: :Nanotechnology 2009
Hai M Duong Namiko Yamamoto Dimitrios V Papavassiliou Shigeo Maruyama Brian L Wardle

Directional thermal conductivities of aligned carbon nanotube (CNT) polymer nanocomposites were calculated using a random walk simulation with and without inter-CNT contact effects. The CNT contact effect has not been explored for its role in thermal transport, and it is shown here to significantly affect the effective transport properties including anisotropy ratios. The primary focus of the p...

Journal: :Dalton transactions 2013
Yuanguo Xu Hui Xu Lei Wang Jia Yan Huaming Li Yanhua Song Liying Huang Guobin Cai

A novel, multi-walled carbon nanotubes (CNT) modified white C3N4 composite (CNT/white C3N4) with enhanced visible-light-response photoactivity was prepared. The white C3N4 and CNT combined together and formed the CNT/white C3N4 composite due to electrostatically-driven self-assembly with the hydrothermal method. The as-prepared white C3N4 and CNT/white C3N4 composite photocatalyst were characte...

Journal: :Physical review letters 2011
Qinghong Yuan Hong Hu Feng Ding

A previously overlooked step of carbon nanotube (CNT) growth, incorporating C atoms into the CNT wall through the CNT-catalyst interface, is studied by density functional theory calculations. A significant barrier for incorporating C atoms into the CNT wall (∼2  eV for most used catalysts, Fe, Co, and Ni) is revealed and the incorporation can be the threshold step of CNT growth in most experime...

2012
Joshua Kevek Tal Sharf Jenna Wardini

We have fabricated suspended carbon nanotube (CNT) devices specifically designed for biological sensing applications. We use 6-inch-wafer processes to maximize yield. Our fabrication process produces suspended CNT with clean surfaces and minimal environ mental noise. The electrode layout is compatible with a microfluidic system for delivering liquids and biological molecules to the sensor. We r...

Journal: :Small 2007
Xiefei Zhang Qingwen Li Yi Tu Yuan Li James Y Coulter Lianxi Zheng Yonghao Zhao Qianxi Jia Dean E Peterson Yuntian Zhu

The superior mechanical properties of carbon nanotubes (CNTs) mean they have been regarded as a new material with the potential to revolutionize and enable many advanced technologies. CNTs have extremely high tensile strength ( 150 GPa), high modulus ( 1 TPa), large aspect ratio, low density, good chemical and environmental stability, and high thermal and electrical conductivity. These superior...

Journal: :Microelectronics Reliability 2013
Wei-Chih Chiu Bing-Yue Tsui

0026-2714/$ see front matter 2013 Elsevier Ltd. A http://dx.doi.org/10.1016/j.microrel.2013.03.001 ⇑ Corresponding author. Tel.: +886 734 747 0177; f E-mail address: [email protected] (W.-C. Chiu) In this paper, a simple and low temperature fabrication process, slow spin rate coating and dry etching, is proposed to construct the CNT-interconnects for future VLSI interconnect applications. Two ...

Journal: :Water research 2013
Irène Schwyzer Ralf Kaegi Laura Sigg Bernd Nowack

Carbon nanotubes (CNTs) are often processed in suspended form and therefore a release of CNT-suspensions into the aquatic environment is plausible. In this study, the behaviour of two physico-chemically very different CNT types in the presence of varying, environmentally relevant calcium-containing media was investigated, including the long-term colloidal stability and the sedimentary structure...

2015
Qing-Qing Ni Yao-Feng Zhu Lu-Jun Yu Ya-Qin Fu

Multiple-phase nanocomposites filled with carbon nanotubes (CNTs) have been developed for their significant potential in microwave attenuation. The introduction of other phases onto the CNTs to achieve CNT-based heterostructures has been proposed to obtain absorbing materials with enhanced microwave absorption properties and broadband frequency due to their different loss mechanisms. The existe...

Journal: :ACS nano 2012
Eric R Meshot Eric Verploegen Mostafa Bedewy Sameh Tawfick Arthur R Woll Katherine S Green Marianne Hromalik Lucas J Koerner Hugh T Philipp Mark W Tate Sol M Gruner A John Hart

The production of high-performance carbon nanotube (CNT) materials demands understanding of the growth behavior of individual CNTs as well as collective effects among CNTs. We demonstrate the first use of grazing incidence small-angle X-ray scattering to monitor in real time the synthesis of CNT films by chemical vapor deposition. We use a custom-built cold-wall reactor along with a high-speed ...

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