نتایج جستجو برای: ag doped

تعداد نتایج: 90820  

Journal: :The Journal of chemical physics 2014
Xingchen Tu Minglang Wang Stefano Sanvito Shimin Hou

Besides the peak at one conductance quantum, G0, two additional features at ∼0.4 G0 and ∼1.3 G0 have been observed in the conductance histograms of silver quantum point contacts at room temperature in ambient conditions. In order to understand such feature, here we investigate the electronic transport and mechanical properties of clean and oxygen-doped silver atomic contacts by employing the no...

2011
Carmen Steluta Ciobanu Florian Massuyeau Liliana Violeta Constantin Daniela Predoi

Synthesis of nanosized particle of Ag-doped hydroxyapatite with antibacterial properties is in the great interest in the development of new biomedical applications. In this article, we propose a method for synthesized the Ag-doped nanocrystalline hydroxyapatite. A silver-doped nanocrystalline hydroxyapatite was synthesized at 100°C in deionized water. Other phase or impurities were not observed...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2015
Natarajan Prakash Rajan Karthikeyan Dheivasigamani Thangaraju Mani Navaneethan Mukannan Arivanandhan Tadanobu Koyama Yasuhiro Hayakawa

Erbium co-doped TiO2 /Ag catalysts are synthesized by using a simple, one-step solvothermal method and characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, Raman analysis, X-ray photoelectron spectroscopy, and diffuse reflectance spectroscopy. The catalysts exhibit anatase crystal structures with increased visible light absorption co...

2015
Jihyun Park Tae Il Lee Jae - Min Myoung

A Silver (Ag) thin film is introduced as a template and doping source for vertically aligned p–type ZnO nanorods. ZnO nanorods were grown using an ammonium hydroxide based hydrothermal process. During the hydrothermal process, the Ag thin film was dissolved to generate Ag ions in the solution. The Ag ions can contribute to doping in the wurzite structure of ZnO and the (111) grain of Ag thin fi...

Journal: :Nanotechnology 2008
Maik Eichelbaum Klaus Rademann Armin Hoell Dragomir M Tatchev Wilfried Weigel Reinhard Stößer Gianfranco Pacchioni

We report the chemistry and photophysics of atomic gold and silver particles in inorganic glasses. By synchrotron irradiation of gold-doped soda-lime silicate glasses we could create and identify unambiguously the gold dimer as a stable and bright luminescing particle embedded in the glassy matrix. The gold dimer spectra coincide perfectly with rare gas matrix spectra of Au(2). The glass matrix...

Journal: :Materials Science and Engineering A-structural Materials Properties Microstructure and Processing 2021

The microstructure, precipitation kinetics, electrical conductivity, and mechanical properties of Cu-7.9 wt%Ag Cu-5.8 doped with 0.6 wt%Nb were investigated. As-cast microstructure revealed both discontinuous continuous Ag in Cu matrix. Differential scanning calorimetry data indicated that occurred at higher temperatures activation energy. Both micro-sized nano-sized Nb particles observed the N...

2003
Thaddeus J. Norman Thea Wilson Donny Magana Jin Z. Zhang Frank Bridges

Ag(I) doped ZnSe nanoparticles were synthesized using molecular cluster precursors. In the emission spectrum at 390 excitation, three emission bands, centered at 432 nm, 517 nm, and 484 nm, respectively were observed. The 432 nm and 517 nm bands can be assigned to ZnSe band-edge emission and donoraccepter emission from the vacancies and trap states in the ZnSe lattice to the Ag(I) dopant, respe...

Journal: :Optics express 2011
Seong Min Lee Kyung Cheol Choi Dong Hyuk Kim Duk Young Jeon

We elucidate that the luminescence from Eu3+-doped phosphor excited by the electron collision can be modified on location near the metallic nanoparticles. The Eu3+-doped phosphor was fabricated on the nanoscaled Ag particles ranging of 5 nm to 30 nm diameter. As a result of the cathodoluminescence measurements, the phosphor films on the Ag particles showed up to twofold more than that of an iso...

2013
Carmen Steluta Ciobanu Simona Liliana Iconaru Mariana Carmen Chifiriuc Adrian Costescu Philippe Le Coustumer Daniela Predoi

The synthesis of nanosized particles of Ag-doped hydroxyapatite with antibacterial properties is of great interest for the development of new biomedical applications. The aim of this study was the evaluation of Ca(10-x)Ag(x)(PO4)6(OH)2 nanoparticles (Ag:HAp-NPs) for their antibacterial and antifungal activity. Resistance to antimicrobial agents by pathogenic bacteria has emerged in the recent y...

Journal: :Physical chemistry chemical physics : PCCP 2017
Nana Sun Bing Yan

The robust gallium carboxylate Ga(OH)(btec)·0.5H2O (MIL-61) is selected as a parent MOF to prepare Ln-MIL-61 by PSM. This work investigates the luminescence of Ln-doped MIL-61 (Ln = Eu3+, Tb3+, Sm3+, Dy3+) in the visible light region. Upon 314 nm excitation, the emission spectra of Eu-MIL-61, Tb-MIL-61 and Eu/Tb-MIL-61 all exhibit their respective strong sharp emission bands. However, Sm-MIL-61...

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