نتایج جستجو برای: Nanofiber diameter

تعداد نتایج: 115606  

2016
Narinder Kaur Vipin Kumar Sanjay R. Dhakate

Electrospun fibrous membranes find place in diverse applications like sensors, filters, fuel cell membranes, scaffolds for tissue engineering, organic electronics etc. The objectives of present work are to electrospun polyacrylonitrile (PAN) nanofibers and PAN-CNT nanocomposite nanofibers and convert into carbon nanofiber and carbon-CNT composite nanofiber. The work was divided into two parts, ...

2016
Yi-Jun Pan Jia-Horng Lin Kun-Chien Chiang Philippe Lambin

Twisted stainless steel wires are used as wire electrodes for electrospinning the polyvinyl alcohol (PVA)/zinc citrate nanofiber mats. The morphology and diameter of the nanofibers in PVA/zinc citrate nanofiber mats are evaluated. We measured the antibacterial efficacy against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) of the nanofiber mats. We also examined the cell adhes...

Journal: :Nanotechnology 2017
Erika García-López Daniel Olvera-Trejo Luis F Velásquez-García

We report the design, fabrication, and characterization of novel, low-cost, and modular miniaturized nanofiber electrospinning sources for the scalable production of non-woven aligned nanofiber mats with low diameter variation. The devices are monolithic arrays of electrospinning emitters made via stereolithography; the emitters are arranged so each element has an independent line of sight to a...

2017
Bitao Fan Shujun Chen Qiufang Yao Qingfeng Sun Chunde Jin

Cellulose nanofiber/AlOOH aerogel for flame retardant and thermal insulation was successfully prepared through a hydrothermal method. Their flame retardant and thermal insulation properties were investigated. The morphology image of the cellulose nanofiber/AlOOH exhibited spherical AlOOH with an average diameter of 0.5 μm that was wrapped by cellulose nanofiber or adhered to them. Cellulose nan...

2015
Hwa-Jeong Lee Sang Joon Lee Saji Uthaman Reju George Thomas Hoon Hyun Yong Yeon Jeong Chong-Su Cho In-Kyu Park O. Thompson Mefford

Nanofibers are one-dimensional nanomaterial in fiber form with diameter less than 1 µm and an aspect ratio (length/diameter) larger than 100:1. Among the different types of nanoparticle-loaded nanofiber systems, nanofibers loaded with magnetic nanoparticles have gained much attention from biomedical scientists due to a synergistic effect obtained from the unique properties of both the nanofiber...

Journal: :iranian journal of basic medical sciences 0
asgar emamgholi neuroscience research center, baqiyatallah university of medical science, tehran, iran microbial biotechnology, faculty of science, payame noor university, unit of tehran center, tehran, iran mohsen rahimi department of parasitology and mycology, school of medicine, baqiyatallah university of medical science, tehran, iran gholamreza kaka neuroscience research center, baqiyatallah university of medical science, tehran, iran seyed homayoon sadraie department of anatomy, school of medicine, baqiyatallah university of medical science, tehran, iran saleh najafi microbial biotechnology, faculty of science, payame noor university, unit of tehran center, tehran, iran

objective(s):various methods for repairing bone defects are presented. cell therapy is one of these methods. bone marrow stromal cells (bmscs) seem to be suitable for this purpose. on the other hand, lots of biomaterials are used to improve and repair the defect in the body, so in this study we tried to produce a similar structure to the bone by the chitosan and hydroxyapatite. materials and me...

2012
Jin Ju Yoo Chan Kim Chung-Wook Chung Young-Il Jeong Dae Hwan Kang

BACKGROUND The study investigated the use of combined photodynamic therapy (PDT) and stent placement for the treatment of cholangiocarcinoma (CC). For this purpose, 5-aminolevulinic acid (ALA) was incorporated into poly(vinyl alcohol) (PVA) nanofiber, and coated onto metal stents. Their efficacy was assessed in PDT towards HuCC-T1 CC cells. METHODS Fabrication of ALA-PVA nanofiber, and simult...

ژورنال: دانشور پزشکی 2015
صدری, مینو, وطنی, حسین, یوسفی, ایمان,

Background and Objective: Lawsonia inermis (henna) has unique properties and has been used as a medicine since the past. In this project, a polymeric nanofiber composite from Chitosan/Polyethylene oxide/Henna extract was produced as a wound’s cover by electrospinning method. Materials and Methods: Polymeric nanofibers were prepared by electrospinning method. In order to study the effect of h...

2006
Choongho Yu Sanjoy Saha Jianhua Zhou Li Shi Alan M. Cassell Brett A. Cruden Quoc Ngo Jun Li

We have measured the thermal resistance of a 152-nm-diameter carbon nanofiber before and after a platinum layer was deposited on the contacts between the nanofiber and the measurement device. The contact resistance was reduced by the platinum coating for about 9–13% of the total thermal resistance of the nanofiber sample before the platinum coating. At a temperature of 300 K, the axial thermal ...

ژورنال: مجله طب نظامی 2019

Background and Aim: Electrospun nanofibers can be used to produce filter media in personal protective equipment for the military. The present study aimed to optimize the electrospinning process used to create polyurethane nanofiber substrates and compare the optimum substrate filtration performance with a typical commercial substrate used in the structure of N95 respirators. Methods: In this ex...

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