نتایج جستجو برای: y swcnt

تعداد نتایج: 495297  

Journal: :Nanoscale 2012
Young Ran Park Woo-Jae Kim Min Jae Ko Nam Ki Min Cheol Jin Lee

The ultraviolet optical properties of semiconducting-enriched and metallic-enriched single-walled carbon nanotube (semi-enriched and m-enriched SWCNT) networks were studied using spectroscopic ellipsometry. According to calculated energy loss function, the energy loss peak assigned to the maximum intensity of π-plasmon energy was found to increase from 4.5 eV to 5.0 eV as SWCNT network composit...

2012
Owen Im Jian Li Mian Wang Lijie Grace Zhang Michael Keidar

BACKGROUND Many shortcomings exist in the traditional methods of treating bone defects, such as donor tissue shortages for autografts and disease transmission for allografts. The objective of this study was to design a novel three-dimensional nanostructured bone substitute based on magnetically synthesized single-walled carbon nanotubes (SWCNT), biomimetic hydrothermally treated nanocrystalline...

Journal: :PLoS ONE 2009
Nagarjun V. Konduru Yulia Y. Tyurina Weihong Feng Liana V. Basova Natalia A. Belikova Hülya Bayir Katherine Clark Marc Rubin Donna Stolz Helen Vallhov Annika Scheynius Erika Witasp Bengt Fadeel Padmakar D. Kichambare Alexander Star Elena R. Kisin Ashley R. Murray Anna A. Shvedova Valerian E. Kagan

Broad applications of single-walled carbon nanotubes (SWCNT) dictate the necessity to better understand their health effects. Poor recognition of non-functionalized SWCNT by phagocytes is prohibitive towards controlling their biological action. We report that SWCNT coating with a phospholipid "eat-me" signal, phosphatidylserine (PS), makes them recognizable in vitro by different phagocytic cell...

2017
Jinwook Baek Travis G. Novak Houngkyung Kim Jinsup Lee Byoungwook Jang Junseok Lee Seokwoo Jeon

In this work, we present the experimental investigation on the contact resistance of graphene/single-walled carbon nanotube (SWCNT) junction using transfer length method with the simple equivalent circuit model. We find that p-n like junctions are formed in graphene/SWCNT transistors, and the contact resistance in the junction is observed to be ~ 494 and ~ 617 kΩ in case of metallic SWCNT (m-SW...

2001
Ladislav Kavan Peter Rapta Lothar Dunsch

had focussed on practical issues of hydrogen storage [1], Li batteries [2] and supercapacitors [3]. Owing to their unique electronic structure, the singlewalled carbon nanotubes (SWCNT) show characteristic Raman and VisNIR spectra. They are understood in terms of resonance enhancement and optical band-gap excitation in onedimensional conductor with Van Hove singularities in the electronic densi...

Journal: :international journal of nanoscience and nanotechnology 2011
n. farhadian

in this work, a molecular dynamics simulation of the transport of water - methanol mixture through the single wall carbon nanotube (swcnt) is reported. methanol and water are selected as fluid molecules since water represents a strongly polar molecule while methanol is as an intermediate between polar and strongly polar molecules. some physical properties of the methanol-water mixture such as r...

Journal: :American journal of physiology. Lung cellular and molecular physiology 2005
Anna A Shvedova Elena R Kisin Robert Mercer Ashley R Murray Victor J Johnson Alla I Potapovich Yulia Y Tyurina Olga Gorelik Sevaram Arepalli Diane Schwegler-Berry Ann F Hubbs James Antonini Douglas E Evans Bon-Ki Ku Dawn Ramsey Andrew Maynard Valerian E Kagan Vincent Castranova Paul Baron

Single-walled carbon nanotubes (SWCNT) are new materials of emerging technological importance. As SWCNT are introduced into the life cycle of commercial products, their effects on human health and environment should be addressed. We demonstrated that pharyngeal aspiration of SWCNT elicited unusual pulmonary effects in C57BL/6 mice that combined a robust but acute inflammation with early onset y...

Journal: :American journal of respiratory cell and molecular biology 2008
Anna A Shvedova James P Fabisiak Elena R Kisin Ashley R Murray Jenny R Roberts Yulia Y Tyurina James M Antonini Wei Hong Feng Choudari Kommineni Jeffrey Reynolds Aaron Barchowsky Vince Castranova Valerian E Kagan

Carbon nanotubes (CNT), with their applications in industry and medicine, may lead to new risks to human health. CNT induce a robust pulmonary inflammation and oxidative stress in rodents. Realistic exposures to CNT may occur in conjunction with other pathogenic impacts (microbial infections) and trigger enhanced responses. We evaluated interactions between pharyngeal aspiration of single-walle...

Journal: :Nanoscale 2016
Donghwan Kim Younsu Jung Junfeng Sun Chisun Yeom Hyejin Park Dae Gon Jung Yeonkyeong Ju Kevin Chen Ali Javey Gyoujin Cho

Printed p-type single walled carbon nanotube (SWCNT) based circuits exhibit high power dissipation owing to their thick printed dielectric layers (>2 μm) and long channels (>100 μm). In order to reduce the static power dissipation of printed SWCNT-base circuits while maintaining the same printing conditions and channel lengths, complementary metal-oxide-semiconductor (CMOS) based circuits are m...

2015
Yifan Li Wei Chen Hongru Ren Xuyan Zhou Hui Li

Molecular dynamics simulation has been carried out to explore the configuration and quantity threshold of multiple graphene nanoribbons (GNRs) in single-walled carbon nanotube (SWCNT). The simulation results showed that several GNRs tangled together to form a perfect spiral structure to maximize the π-π stacking area when filling inside SWCNT. The formation of multiple helical configuration is ...

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