We measured the spontaneous decays of internally hot copper and silver dimer anions, ${\mathrm{Cu}}_{2}^{\ensuremath{-}}$ ${\mathrm{Ag}}_{2}^{\ensuremath{-}}$, stored in one two ion-beam storage rings Double Electrostatic Ion Ring Experiment (DESIREE) at Stockholm University. A coincidence detection technique was utilized enabling essentially background-free measurements ${\mathrm{Cu}}_{2}^{\en...

The nonlinear optical properties and the role of the surface-plasmon resonance (SPR) on optical limiting (OL) properties of Ag–Cu nanoclusters co-doped in SiO2 matrix prepared using the sol-gel technique with a Cu/Ag molar ratio of 1, 2 and 3, respectively, are presented. The studies were made using the second harmonic of high-power nanosecond and picosecond Nd:YAG lasers. These films show a se...

MAMMALIAN METALLOTHIONEIN IS REMARKABLE IN ITS METAL BINDING PROPERTIES: well-characterized species exist for metal to sulfur ratios of M(7)S(20), M(12)S(20), and M(18)S(20), where M = Cd(ll), Zn(ll), Hg(ll), Ag(I), Au(I), and Cu(I). Circular dichroism and luminescence spectra provide rich details of a complicated metal binding chemistry when metals are added directly to the metal free- or zinc...

The effects of five nanomaterials (multiwalled carbon nanotubes [MWCNTs], Ag, Cu, ZnO, Si) and their corresponding bulk counterparts on seed germination, root elongation, and biomass of Cucurbita pepo (zucchini) were investigated. The plants were grown in hydroponic solutions amended with nanoparticles or bulk material suspensions at 1000 mg/L. Seed germination was unaffected by any of the trea...

Adsorption of carbonmonoxide on the silver ion-exchanged Ag-ZSM-5 zeolite has been studied using both quantum cluster and embedded cluster at the models B3LYP/6-31G(d,p) level of theory. The Ag...Oz distance in Ag-ZSM-5 complexes is predicted to be 2.26 Å for the quantum cluster and 2.32 Å for the embedded cluster, the latter is in agreement with the experimental value of 2.30 + 0.03 Å. The opt...

The study was designed to investigate the synergic effect of Ti and Sn in active metal brazing Al2O3 ceramic copper brazed, using multicomponent Ag-Cu-Zr filler alloy. Numerous fine hexagonal-shaped rod-like ternary intermetallic (Zr, Ti)5Sn3 phase (L/D = 5.1 ± 0.8, measured microns) were found dispersed Ag-Cu matrix Ag-18Cu-6Sn-3Zr-1Ti alloy, along with CuZrSn phases. An approximate 15° reduct...

Solid solutions of Ag-Cu were prepared via ball milling process, for about 5-30 h. The Cu-20at%Ag and Cu-3.64at%Ag composition were investigated by X-ray diffraction technique. It was realized that the solid solubility level could be increased by increasing the initial solute content in the mixture. In addition, shifts in peak positions of silver and copper were observed with milling time. The ...

Metallic glasses are perfect materials for preparing nanostructures by dealloying, but the obtained commonly of porous structures. Through combination chemical dealloying and ultrasonic vibration, ultrathin Cu&Ag bimetallic nanoporous membranes (NPMs) have been prepared from a Zr48Cu36Ag8Al8 MG ribbon. Furthermore, introducing oxygen into ribbon to change mechanism process, (Cu&Ag)@Ag core-shel...