نتایج جستجو برای: graphitized nanofibers

تعداد نتایج: 7482  

2015
Michele Greque de Morais Christopher Stillings Roland Dersch Markus Rudisile Patrícia Pranke Jorge Alberto Vieira Costa Joachim Wendorff

Electrospun nanofibers composed of polymers have been extensively researched because of their scientific and technical applications. Commercially available polyhydroxybutyrate (PHB) and polyhydroxybutyrate-co-valerate (PHB-HV) copolymers are good choices for such nanofibers. We used a highly integrated method, by adjusting the properties of the spinning solutions, where the cyanophyte Arthrospi...

2014
Jingwei Xie Matthew R. MacEwan Wenying Liu Nithya Jesuraj Xiaoran Li Daniel Hunter Younan Xia

Compared to the nerve guidance conduits (NGCs) constructed from a single layer of aligned nanofibers, bilayer NGCs with random and aligned nanofibers in the outer and inner layers are more robust and tear-resistant during surgical procedures thanks to an isotropic mechanical property provided by the random nanofibers. However, it remains unclear whether the random nanofibers will interfere with...

2017
Dongsheng Chen Yanyan Zhu

CH3NH3PbI3 perovskite nanofibers were synthesized by versatile electrospinning techniques. The synthetic CH3NH3PbI3 nanofibers were characterized by X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, and photoluminescence. As counter electrodes, the synthesized nanofibers increased the performance of the dye-sensitized solar cells from 1.58 to 2.09%. This improvement w...

2016
Khalil Abdelrazek Khalil El-Sayed M. Sherif A. M. Nabawy Hany S. Abdo Wagih W. Marzouk Hamad F. Alharbi

TiC nanofibers reinforced Al matrix composites were produced by High Frequency Induction Heat Sintering (HFIHS).The titanium carbide nanofibers with an average diameter of 90 nm are first prepared by electrospinning technique and high temperature calcination process. A composite solution containing polyacrylonitrile and titanium isopropoxide is first electrospun into the nanofibers, which are s...

2012
Deng-Guang Yu Jie Zhou Nicholas P Chatterton Ying Li Jing Huang Xia Wang

BACKGROUND The objective of this investigation was to develop a new class of antibacterial material in the form of nanofibers coated with silver nanoparticles (AgNPs) using a modified coaxial electrospinning approach. Through manipulation of the distribution on the surface of nanofibers, the antibacterial effect of Ag can be improved substantially. METHODS Using polyacrylonitrile (PAN) as the...

2011
Zhenyu Song Xiaoxiao Hou Liqun Zhang Sizhu Wu

Partially aligned polyacrylonitrile (PAN)-based nanofibers were electrospun from PAN and PAN/single-walled carbon nanotubes (SWNTs) in a solution of dimethylformamide (DMF) to make the nanofiber composites. The as-spun nanofibers were then hot-stretched in the oven to enhance its orientation and crystallinity. With the introduction of SWNTs and by the hot-stretched process, the mechanical prope...

Journal: :ACS nano 2009
Jingwei Xie Matthew R MacEwan Xiaoran Li Shelly E Sakiyama-Elbert Younan Xia

Electrospun nanofibers can be readily assembled into various types of scaffolds for applications in neural tissue engineering. The objective of this study is to examine and understand the unique patterns of neurite outgrowth from primary dorsal root ganglia (DRG) cultured on scaffolds of electrospun nanofibers having different orders, structures, and surface properties. We found that the neurit...

2012
Dongju Jung Itsunari Minami Sahishnu Patel Jonghwan Lee Bin Jiang Qinghua Yuan Liu Li Sachiko Kobayashi Yong Chen Ki-Bum Lee Norio Nakatsuji

BACKGROUND Electrospun nanofibers have been widely used as substrata for mammalian cell culture owing to their structural similarity to natural extracellular matrices. Structurally consistent electrospun nanofibers can be produced with synthetic polymers but require chemical modification to graft cell-adhesive molecules to make the nanofibers functional. Development of a facile method of grafti...

2010
R Nirmala Ki Taek Nam R Navamathavan Soo-Jin Park Hak Yong Kim

Polyurethane nanofibers containing calcium chloride (CaCl2) were prepared via an electrospinning technique for the biomedical applications. Polyurethane nanofibers with different concentration of CaCl2 were electrospun, and their bioactivity evaluation was conducted by incubating in biomimetic simulated body fluid (SBF) solution. The morphology, structure and thermal properties of the polyureth...

2015
Jakub Hrib Jakub Sirc Radka Hobzova Zuzana Hampejsova Zuzana Bosakova Marcela Munzarova Jiri Michalek

Nanofibers were prepared from polycaprolactone, polylactide and polyvinyl alcohol using Nanospider(TM) technology. Polyethylene glycols with molecular weights of 2 000, 6 000, 10 000 and 20 000 g/mol, which can be used to moderate the release profile of incorporated pharmacologically active compounds, served as model molecules. They were terminated by aromatic isocyanate and incorporated into t...

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