An X-ray absorption spectroscopic study of structural changes occurring at the Ni site of Chromatium vinosum hydrogenase during reductive activation, CO binding, and photolysis is presented. Structural details of the Ni sites for the ready silent intermediate state, SI(r), and the carbon monoxide complex, SI-CO, are presented for the first time in any hydrogenase. Analysis of nickel K-edge ener...

Carbon spheres and tubes were formed from acetylene decomposition on SBA-15 and Ni-SBA-15 at 650-850 °C. At 650 °C, the decomposed carbons covered the surface of the support, and no carbon spheres and filament materials were formed. Carbon sphere formation occurred at 750 °C-850 °C; with diameters ranging from 0.8 μm-1.1 μm. For Ni-SBA-15, the diameters of the spheres and filaments were 0.8 μm ...

Feasibility of an oxidized Ni/Au p contact on some aspects of device applications for a GaN/InGaN multiple quantum well light-emitting diode ~LED! was investigated. For the oxidation of Ni/Au p contact, furnace annealing of a completely fabricated LED was performed at 600 °C for 5 min in an O2 ambient. For the case of LED with an oxidized Ni/Au system, the I – V measurements showed a reduction ...

This review outlines the development of electroless Ni–P composite coatings. It highlights the method of formation, mechanism of particle incorporation, factors influencing particle incorporation, effect of particle incorporation on the structure, hardness, friction, wear and abrasion resistance, corrosion resistance, high temperature oxidation resistance of electroless Ni–P composite coatings ...

In this study, interfacial reactions of electrolytic Ni and electroless Ni(P) metallization of the ball-grid-array (BGA) substrate with the molten n–9Zn (wt.%) eutectic solder alloy were investigated, focusing on the shear strengths and the identification of the intermetallic compound IMC) phases at various reflow periods. Zn-containing Pb-free solder alloys were kept in molten condition (240 ◦...

The title compound, [Ni(C(5)H(5))(C(13)H(7)N(2))(C(18)H(15)P)] or (η(5)-C(5)H(5))(PPh(3))Ni-C C-C(7)H(6)-C(H)=C(CN)(2), contains an unusual disubstituted norbornadienyl (NBD) ligand containing ethynyl (-C C-) and dicyano-vinyl [-C(H)=C(CN)(2)] groups. Disorder is present in the NBD group with site occupancies of 0.636 (10) and 0.364 (10) for two distinct orientations. There are no strong hydrog...