نتایج جستجو برای: copper silver

تعداد نتایج: 125988  

2013

The thermotransport of divalent Sr, Cd and Mn ions in silver chloride and bromide has been investigated experimentally. A model for the intrinsic contribution to the heat of transport is pro­ posed. This model is used to interpret our experiments, together with other experiments reported in the literature, namely the thermoelectric power of pure silver chloride and bromide, and the thermotransp...

Journal: :ACS Applied Nano Materials 2022

Tailoring of plasmon resonances is essential for applications in anticounterfeiting. This readily achieved by tuning the composition alloyed metal clusters; simplest case, binary alloys are used. Yet, one challenge correlation cluster morphology and with changing optoelectronic properties. Hitherto, early stages alloy nanocluster formation immiscible systems such as silver copper have been acce...

2013
Piero Baraldi Yilin Zhou Pan Yang Chengming Yuan Yujia Huo

With lead-free legislation impacting printed circuit board (PCB) manufacturing, immersion silver (ImAg) finish is adapted as the top finish of copper trace on PCB due to its many advantages. However, it is easy for silver to form electrochemical migration (ECM) in high humid environment, so that the potential bias and spacing between adjacent circuits are limited. In addition, since the thickne...

Journal: :Nano letters 2010
Hui Wu Liangbing Hu Michael W Rowell Desheng Kong Judy J Cha James R McDonough Jia Zhu Yuan Yang Michael D McGehee Yi Cui

Transparent electrodes, indespensible in displays and solar cells, are currently dominated by indium tin oxide (ITO) films although the high price of indium, brittleness of films, and high vacuum deposition are limiting their applications. Recently, solution-processed networks of nanostructures such as carbon nanotubes (CNTs), graphene, and silver nanowires have attracted great attention as rep...

2010
Simone Piccinin Ngoc Linh Nguyen Catherine Stampfl Matthias Scheffler

Silver–copper alloys have been proposed as catalysts for ethylene epoxidation due to their superior selectivity compared to pure silver, the predominant catalyst for this reaction. Under reaction conditions it has been previously shown that, rather than a two-dimensional (2D) Ag–Cu alloy, a thin copper oxide-like layer forms on top of silver, and several possible surface structures were identif...

Journal: :Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 1998
Z Liu J E Stout M Boldin J Rugh W F Diven V L Yu

One copper-silver ionization system was sequentially installed onto the hot-water recirculation lines of two hospital buildings colonized with Legionella pneumophila, serogroup 1. A third building with the same water supply and also colonized with Legionella served as a control. Four weeks after activation of the system, distal site positivity for Legionella in the first test building dropped t...

Journal: :Journal of dental research 1969
L N Johnson K Asgar F A Peyton

An etch resistance phase was found in dental silver amalgam when the amalgam was examined metallographically. This phase was common to the silver alloy ingot as well as to its prepared amalgam. Qualitative electron microprobe technics were used to identify this phase. Quantitative electron microprobe analysis defined it as the R' phase of the copper-tin system or the intermetallic compound Cu6Sn5.

Journal: :Dalton transactions 2012
Giacomo Dacarro Lucia Cucca Pietro Grisoli Piersandro Pallavicini Maddalena Patrini Angelo Taglietti

A polyethylenimine (PEI) self-assembled monolayer (SAM) is prepared, capable of complexing silver and copper cations and of anchoring silver nanoparticles, exerting antibacterial activity against Escherichia coli and Staphylococcus aureus. Functionalized glassy surfaces have been fully characterized through spectroscopic techniques (UV-Vis spectroscopy, spectroscopic ellipsometry), atomic force...

Journal: :Nanoscale 2011
Yongchao Lai Wenxiao Pan Dongju Zhang Jinhua Zhan

Silver nanoplates were prepared by modified galvanic displacement on commercial copper foil. SEM, TEM, UV-vis and XPS were employed to analyze those closely packed silver nanoplates. This type of surface-enhanced Raman spectroscopy substrates showed strong surface plasmon absorption and reliable surface-enhanced Raman activity.

شفیعی, بهنام, شهاب پور, جمشید,

Based on this study, the avcfiige gold and silver graJcs in the SaT Chesbmeh porphyry copper deposil arc 0.06 and 1.22 gil re.'ipcct ivcly which arc very different from the o nes repon ed previously. In the bioti lic andes ite and a!ICrcd phyllic/potassic samples from the siock, the high positin: correlation between the hypogene copper and gold grades ( r=0.81 ), and gold 'lIld silw.f grad...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید