نتایج جستجو برای: zinc oxide nanoparticls

تعداد نتایج: 238105  

Journal: :Journal of the American Chemical Society 2009
Benjamin D Yuhas Peidong Yang

We present an all-oxide solar cell fabricated from vertically oriented zinc oxide nanowires and cuprous oxide nanoparticles. Our solar cell consists of vertically oriented n-type zinc oxide nanowires, surrounded by a film constructed from p-type cuprous oxide nanoparticles. Our solution-based synthesis of inexpensive and environmentally benign oxide materials in a solar cell would allow for the...

Journal: :Journal of the American Chemical Society 2004
Ming Yin Yi Gu Igor L Kuskovsky Tamar Andelman Yimei Zhu G F Neumark Stephen O'Brien

Nanoscale zinc oxide (ZnO) rods of diameters close to the Bohr-exciton radius ( approximately 2 nm) can be prepared from a simple acetate precursor, resulting in ligand-capped rods of ZnO, highly dispersible in nonpolar solvents. Zinc oxide, ZnO, is a wide band-gap semiconductor with applications in blue/ultraviolet (UV) optoelectronic devices and piezoelectric devices. We observe self-assembly...

2016
Ion Tiginyanu Lidia Ghimpu Jorit Gröttrup Vitalie Postolache Matthias Mecklenburg Marion A. Stevens-Kalceff Veaceslav Ursaki Nader Payami Robert Feidenhansl Karl Schulte Rainer Adelung Yogendra Kumar Mishra

In present work, the nano- and microscale tetrapods from zinc oxide were integrated on the surface of Aerographite material (as backbone) in carbon-metal oxide hybrid hierarchical network via a simple and single step magnetron sputtering process. The fabricated hybrid networks are characterized for morphology, microstructural and optical properties. The cathodoluminescence investigations reveal...

2017
Mohamed Afify Ahmed Sabry Mohamed Hassan Ahmed Sabry Afify Mohamed Ataalla Amr Mohammed Anna Staneva Yanko Dimitriev Jean-Marc Tulliani

Zinc oxide nanoparticles are obtained by a wet chemical method using zinc sulphate as a raw material. Doping sepiolite, micro-fibrous inorganic clay, with ZnO after precipitation under basic conditions and subsequent thermal treatment is investigated as both materials are abundant. They are used for the development of humidity and gas sensors of great environmental importance. The particle size...

Journal: :Journal of Materials Science: Materials in Electronics 2012

2001

Design: The Age-Related Eye Disease Study, an 11center double-masked clinical trial, enrolled participants in an AMD trial if they had extensive small drusen, intermediate drusen, large drusen, noncentral geographic atrophy, or pigment abnormalities in 1 or both eyes, or advanced AMD or vision loss due to AMD in 1 eye. At least 1 eye had best-corrected visual acuity of 20/32 or better. Particip...

2014
N Surajkumar Singh S Dorendrajit Singh

Undoped Zinc oxide (ZnO) nanoparticles as well as ZnO nanoparticles doped with Magnesium (Mg) were synthesized by wet chemical precipitation method using Zinc acetate and Magnesium acetate in Ethylene glycol and distilled water medium. The prepared nanoparticles were characterized with X-ray diffraction (XRD). The XRD patterns show the pattern of typical ZnO nanoparticles and correspond with st...

2003
Ying Dai Yue Zhang Yuan Qiang Bai Zhong Lin Wang

Bicrystalline ZnO nanowires synthesized are composed of two crystals that form a twin structure parallel to the (0 1 1 4) plane with a growth direction closely parallel to [0 1 1 1] and the (2 1 1 0) side facet. The twin structure is suggested to be a key factor in leading the axial growth of the nanowire. The photoluminescence spectra of the nanowires show a weak UV emission at 385 nm and a st...

2001

Design: The Age-Related Eye Disease Study, an 11center double-masked clinical trial, enrolled participants in an AMD trial if they had extensive small drusen, intermediate drusen, large drusen, noncentral geographic atrophy, or pigment abnormalities in 1 or both eyes, or advanced AMD or vision loss due to AMD in 1 eye. At least 1 eye had best-corrected visual acuity of 20/32 or better. Particip...

Journal: :Proceedings of the American Thoracic Society 2005
Claudette M St Croix Karanee Leelavaninchkul Simon C Watkins Valerian E Kagan Bruce R Pitt

Among putative small molecules that affect sensitivity to acute lung injury, zinc and nitric oxide are potentially unique by virtue of their interdependence and dual capacities to be cytoprotective or injurious. Nitric oxide and zinc appear to be linked via an intracellular signaling pathway involving S-nitrosation of metallothoinein--itself a small protein known to be an important inducible ge...

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