نتایج جستجو برای: uniaxial nanofibers

تعداد نتایج: 15313  

Journal: :The Analyst 2011
Zhen Liu Cuisong Zhou Baozhan Zheng Lei Qian Yan Mo Fulian Luo Yalin Shi Martin M F Choi Dan Xiao

A simple and cost-effective method was reported to synthesize small size (6 nm) gold nanoparticles (AuNPs) on polyacrylonitrile (PAN) electrospun nanofibers (AuNPs/PAN). The formation of AuNPs is attributed to the in situ reduction of Au(III) to Au(0) by 4-(dimethylamino)benzaldehyde doped in the PAN nanofibers. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) confirmed ...

2015
Xiang Gao Xiaohong Zhang Jinlin Song Xiao Xu Anxiu Xu Mengke Wang Bingwu Xie Enyi Huang Feng Deng Shicheng Wei

The construction of functional biomimetic scaffolds that recapitulate the topographical and biochemical features of bone tissue extracellular matrix is now of topical interest in bone tissue engineering. In this study, a novel surface-functionalized electrospun polycaprolactone (PCL) nanofiber scaffold with highly ordered structure was developed to simulate the critical features of native bone ...

2011
Xiuli Zhou Wei Guo Alejandro G Perez-Bergquist Qiangmin Wei Yanbin Chen Kai Sun Lumin Wang

Amorphous GaSb nanofibers were obtained by ion beam irradiation of bulk GaSb single-crystal wafers, resulting in fibers with diameters of ~20 nm. The Raman spectra and photoluminescence (PL) of the ion irradiation-induced nanofibers before and after annealing were studied. Results show that the Raman intensity of the GaSb LO phonon mode decreased after ion beam irradiation as a result of the fo...

2014
Tony M. Dinis Guillaume Vidal Rodrigo R. Jose Pascale Vigneron Damien Bresson Vincent Fitzpatrick Frédéric Marin David L. Kaplan Christophe Egles Thomas Claudepierre

With the aim of forming bioactive guides for peripheral nerve regeneration, silk fibroin was electrospun to obtain aligned nanofibers. These fibers were functionalized by incorporating Nerve Growth Factor (NGF) and Ciliary NeuroTrophic Factor (CNTF) during electrospinning. PC12 cells grown on the fibers confirmed the bioavailability and bioactivity of the NGF, which was not significantly releas...

2016
Jayesh J. Ahire Melanie Hattingh Deon P. Neveling Leon M. T. Dicks

Copper particles were incorporated into nanofibers during the electrospinning of poly-D,L-lactide (PDLLA) and poly(ethylene oxide) (PEO). The ability of the nanofibers to prevent Pseudomonas aeruginosa PA01 and Staphylococcus aureus (strain Xen 30) to form biofilms was tested. Nanofibers containing copper particles (Cu-F) were thinner (326 ± 149 nm in diameter), compared to nanofibers without c...

2005
Donglu Shi Peng He Jie Lian Xavier Chaud Sergey L. Bud’ko Eric Beaugnon Rodney C. Ewing Robert Tournier

Engineering applications of carbon nanofibers and nanotubes require their alignment in specific directions. Single-walled carbon nanotubes can be aligned in a magnetic field due to the presence of small amounts of catalyst elements, such as Ni and Co. However, for carbon nanofibers, their extremely low magnetic susceptibility is not sufficient for magnetically induced alignment. We present a me...

Journal: :The Journal of clinical investigation 2006
Patrick C H Hsieh Michael E Davis Joseph Gannon Catherine MacGillivray Richard T Lee

Endothelial cells can protect cardiomyocytes from injury, but the mechanism of this protection is incompletely described. Here we demonstrate that protection of cardiomyocytes by endothelial cells occurs through PDGF-BB signaling. PDGF-BB induced cardiomyocyte Akt phosphorylation in a time- and dose-dependent manner and prevented apoptosis via PI3K/Akt signaling. Using injectable self-assemblin...

Azam, Kamal , Ghasemi Koozekonan, Aysa , Golbabaei, Farideh , Kalantary, Saba , Karimi, Ali , Monazzam Esmaeilpour, Mohammad Reza ,

Introduction: The skin, can be exposed to harmful factors like ultraviolet radiation (UV). Exposure to this physical hazardous agent could be contributed to pigmentation, erythemas, early aging, skin cancer, and DNA damage. The aim of this study, therefore, was to fabricate the polyacrylonitrile (PAN) nanofibers with the UV protection property by the use of various concentrations of titanium di...

Journal: :Chemical communications 2010
Eun-Mee Kim Jin-Seung Jung Weon-Sik Chae

Internal mesostructures of silica nanofibers were dramatically changed through controlled interfacial interactions of confined lyotropic block copolymer systems in nanocylinders, which were further used as structure-directing templates for the fabrication of porous gold nanofibers with unprecedented nanoarchitectures.

Journal: :Chemical communications 2009
Zhengtao Zhu Lifeng Zhang Jane Y Howe Yiliang Liao Jordan T Speidel Steve Smith Hao Fong

The current of uni-axially aligned electrospun ZnO nanofibers is modulated reversibly under UV irradiation, with the sensitivity of the UV nanosensors depending on the surface coating of the nanofibers, due to the effect on the photo-generated current.

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