نتایج جستجو برای: nano structure

تعداد نتایج: 1611864  

Journal: :international journal of nano dimension 0
s. narendar defence research and development laboratory, kanchanbagh, hyderabad-500 058, india. s. ravinder department of mechanical engineering, vardhaman college of engineering, shamshabad, hyderabad-501 218, india. s. gopalakrishnan department of aerospace engineering. indian institute of science, bangalore-560 012, india.

fabrication, characterization and application of micro-/nano-rods/wires are among the hottest topics in materials science and applied physics. micro-/nano-rod-based structures and devices are developed for a wide-ranging use in various fields of micro-/nanoscience (e.g. biology, electronics, medicine, optics, optoelectronics, photonics and sensors). it is well known that the structure and prope...

The Nano-CrY zeolite synthesized and characterized by Fourier transfer infrared (FT-IR), X-ray diffraction (XRD),and Scanning electron microscopy (SEM).The result show that nano catalyst prepared with mainly particles size about 30-80 nm .The XRD show the structure of the zeolite does not collapse. This Nano-CrY zeolite has been used as new, and nontoxic catalyst for catalyzes of synthesis of 2...

D. Zaarei, Iman Danaee, M. R. Khorram, M. R. Shishesaz,

The micro layers micaceous iron oxide and nano-TiO 2 were incorporated into the epoxy resin by mechanical mixing and sonication process. Optical micrographs showed that the number and diameter size of nanoparticle agglomerates were decreased by sonication. The structure and composition of the nanocomposite was determined using transmission electron microscopy which showed the presence of disper...

Journal: :Optics express 2012
Lee-Woon Jang Jin-Woo Ju Dae-Woo Jeon Jae-Woo Park A Y Polyakov Seung-Jae Lee Jong-Hyeob Baek Song-Mei Lee Yong-Hoon Cho In-Hwan Lee

2.7 times increase in room temperature photoluminescence (PL) intensity and 3.2 times increase in electroluminescence (EL) intensity were observed in blue multi-quantum-well (MQW) GaN/InGaN light emitting diodes (LEDs) as a result of introduction of nano-needle structure embedded with Ag nanoparticles (NPs) into n-GaN film underlying the active MQW region and thick p-GaN contact layer of LEDs. ...

2010
Vasudevanpillai Biju

W elcome to Nano Reviews, a new and unique Open Access journal in the Nanoscience, Na-notechnology, Nanobiotechnology, and Single-molecule research areas Á the 3NS field. Research results in the 3NS field are crucial to the fundamental challenges we face in the biomedical and environmental sciences, and give us the tools and the raw materials we need to support future technological development....

Journal: :Biomaterials 2008
Marina I Santos Kadriye Tuzlakoglu Sabine Fuchs Manuela E Gomes Kirsten Peters Ronald E Unger Erhan Piskin Rui L Reis C James Kirkpatrick

Presently the majority of tissue engineering approaches aimed at regenerating bone relies only on post-implantation vascularization. Strategies that include seeding endothelial cells (ECs) on biomaterials and promoting their adhesion, migration and functionality might be a solution for the formation of vascularized bone. Nano/micro-fiber-combined scaffolds have an innovative structure, inspired...

Journal: :Biomedical materials 2009
S B Huang S S Gao H Y Yu

The purpose of the research was to determine the effect of nano-hydroxyapatite concentrations on initial enamel lesions under dynamic pH-cycling conditions. Initial enamel lesions were prepared in bovine enamel with an acidic buffer. NaF (positive control), deionized water (negative control) and four different concentrations of nano-hydroxyapatite (1%, 5%, 10% and 15% wt%) were selected as the ...

Journal: :journal of dental research, dental clinics, dental prospects 0
farzin heravi dental research center, school of d mohammad ramezani pharmaceutical and biotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran maryam poosti assistant professor, department of orthodontics, school of dentistry, islamic azad university, tehran, iran mohsen hosseini achool of dentistry, mashhad university of medical sciences, mashhad, iran arezoo shajiei farzaneh ahrari dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran

background and aims. incorporation of nano-particles to orthodontic bonding systems has been considered to prevent enamel demineralization around appliances. this study investigated cytotoxicity of transbond xt adhesive containing 1 wt% titanium dioxide (tio2) nano-particles. materials and methods. ten composite disks were prepared from each of the conventional and tio2-containg composites and ...

Journal: :ماشین های کشاورزی 0
حسین میرزایی مقدم محمد هادی خوش تقاضا محسن برزگر بفروئی علی سلیمی

in this research, kiwifruits (hayward) were selected in two mass ranges (large and small). they were placed in one-liter glass bottles in the vicinity of the polyethylene sachets containing potassium permanganate nano-zeolite (0, 0.2, 0.4 and 0.8 g) and were stored in a germinator (5°c temperature and 30% relative humidity). then, the physicochemical properties of the fruits (soluble solid cont...

Journal: :Journal of the Korean Institute of Electrical and Electronic Material Engineers 2005

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