نتایج جستجو برای: cuo nanocrystalline

تعداد نتایج: 14467  

2016
Terence K. S. Wong Siarhei Zhuk Saeid Masudy-Panah Goutam K. Dalapati

The current state of thin film heterojunction solar cells based on cuprous oxide (Cu₂O), cupric oxide (CuO) and copper (III) oxide (Cu₄O₃) is reviewed. These p-type semiconducting oxides prepared by Cu oxidation, sputtering or electrochemical deposition are non-toxic, sustainable photovoltaic materials with application potential for solar electricity. However, defects at the copper oxide hetero...

2014
Lin-Bao Luo Xian-He Wang Chao Xie Zhong-Jun Li Rui Lu Xiao-Bao Yang Jian Lu

In this work, we presented a surface mechanical attrition treatment (SMAT)-assisted approach to the synthesis of one-dimensional copper oxide nanowires (CuO NWs) for nanodevices applications. The as-prepared CuO NWs have diameter and the length of 50 ~ 200 nm and 5 ~ 20 μm, respectively, with a preferential growth orientation along [1 [Formula: see text] 0] direction. Interestingly, nanofield-e...

Journal: :journal of dentistry, shiraz university of medical sciences 0
baratali ramazanzadeh dental research center, dept. of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. arezoo jahanbin dental research center, dept. of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. masoud yaghoubi dept. of orthodontics, school of dentistry, bojnourd university of medical sciences, bojnord, iran. nasser shahtahmassbi dept. of physics, ferdowsi university of mashhad, mashhad, iran. kiarash ghazvini dept. of microbiology, ghaem hospital, mashhad university of medical sciences, mashhad, iran. mohammadtaghi shakeri dept. of community medicine and public health, ghaem hospital, mashhad university of medical sciences, mashhad, iran.

statement of the problem: during the orthodontic treatment, microbial plaques may accumulate around the brackets and cause caries, especially in high-risk patients. finding ways to eliminate this microbial plaque seems to be essential. purpose: the aim of this study was to compare the antibacterial effects of nano copper oxide (cuo) and nano zinc oxide (zno) coated brackets against streptococcu...

ژورنال: :نشریه شیمی و مهندسی شیمی ایران 2015
سید قربان حسینی اسماعیل ایومن

در این پژوهش، تجزیه گرمایی آمونیوم پرکلرات با افزودن نانوذره­هایcuo تجاری بررسی شده است. نانوذره­های cuo با روش های مشخصه یابی پراش اشعه ایکس (xrd) و میکروسکوپ الکترونی عبوری (tem) بررسی شد. تصویر آنالیز tem نشان می دهد که نانوذره­های cuo دارای مورفولوژی به تقریب کروی هستند. فعالیت کاتالیستی نانوذره­های cuo بر تجزیه گرمایی آمونیوم پرکلرات (ap) با آنالیزهای گرمایی dsc و tga بررسی شد، که نتیجه­ها...

2010
SHI SU RUZHONG ZUO YAN RAN WANLI ZHAO XIAOHUI WANG LONGTU LI

The CuO modified (Na0.52K0.48)NbO3 (NKN) piezoelectric ceramics were prepared by a solid-state reaction method. On the one hand, CuO doping can improve the densification behavior and simultaneously promote the grain growth, however, has little effect on the Curie temperature. On the other hand, the mechanical quality factor Qm obviously increases, the dielectric loss tanδ decreases, and the pie...

Journal: :Journal of the Egyptian Society of Parasitology 2015
Halim A Saad Mohamed I Soliman Ahmed M Azzam B Mostafa

Nanoparticles (NPs) have received more attention as antiparasitic agents. In the present study, silver and copper nanoparticles were synthesized and characterized using scanning electron microscopy (SEM), transmission electron microscope (TEM) and X-ray fluorescence (XRF). The antiparasitic activity of Ag and CuO nanoparticles were tested against two of the most environmentally spread parasites...

2015
Mathieu Lasfargues Qiao Geng Hui Cao Yulong Ding

In this study, the effect of nanoparticle concentration was tested for both CuO and TiO₂ in eutectic mixture of sodium and potassium nitrate. Results showed an enhancement in specific heat capacity (Cp) for both types of nanoparticles (+10.48% at 440 °C for 0.1 wt % CuO and +4.95% at 440 °C for 0.5 wt % TiO₂) but the behavior toward a rise in concentration was different with CuO displaying its ...

2013
Xavier Rocquefelte Karlheinz Schwarz Peter Blaha Sanjeev Kumar Jeroen van den Brink

Multiferroic materials, in which ferroelectric and magnetic ordering coexist, are of fundamental interest for the development of multi-state memory devices that allow for electrical writing and non-destructive magnetic readout operation. The great challenge is to create multiferroic materials that operate at room temperature and have a large ferroelectric polarization P. Cupric oxide, CuO, is p...

2013
Jen-Kai Wu Wei-Jen Chen Yuan Huei Chang Yang Fang Chen Da-Ren Hang Chi-Te Liang Jing-Yu Lu

The fabrication and properties of n-ZnO nanowires/p-CuO coaxial heterojunction (CH) with a photoresist (PR) blocking layer are reported. In our study, c-plane wurtzite ZnO nanowires were grown by aqueous chemical method, and monoclinic CuO (111) was then coated on the ZnO nanowires by electrochemical deposition to form CH. To improve the device performance, a PR layer was inserted between the Z...

2014
Mariola J. Edelmann Leslie A. Shack Caitlin D. Naske Keisha B. Walters Bindu Nanduri

Copper (II) oxide (CuO) nanoparticles (NP) are widely used in industry and medicine. In our study we evaluated the response of BEAS-2B human lung cells to CuO NP, using Stable isotope labeling by amino acids in cell culture (SILAC)-based proteomics and phosphoproteomics. Pathway modeling of the protein differential expression showed that CuO NP affect proteins relevant in cellular function and ...

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