A new single step direct-write photomask process has been proposed by using Bi/In bimetallic thermal resist which turns almost transparent with high energy laser exposure. The Bi over In metallic films, each layer ~40 nm thick, were DCsputtered onto quartz mask plate substrates in a single pump-down chamber. Before laser exposure the Bi/In had 2.91 Optical Density. Bi/In is a bimetallic thermal...

We discuss methods of Extended X-ray Absorption Fine-Structure (EXAFS) analysis that provide three-dimensional structural characterization of metal nanoparticles, both monoand bi-metallic. For the bimetallic alloys, we use short range order measurements to discriminate between random and non-random inter-particle distributions of atoms. We also discuss the application of EXAFS to heterogeneous ...

Coal sediment samples from Okaba coal mine in Kogi State, Nigeria, were subjected to analysis for some metallic and non-metallic compositions. Of 35 elements determined by energy-dispersive X-ray fluorescence spectrometry, a number of anomalously high levels were recorded. Elements determined are Al, Si, P, S, K, Ca, Ti, Cr, Mn, V, Fe, Ni, Cu, Zn, Rb, Zr, Ru, Ba, Sr, Y, Se, Os, Bi, Sb, Pb, Mg, ...

A general route to synthesize a series of ultrafine Mo-based HER-active bi-/tri-metallic carbide electrocatalysts by direct carbonization multi-metal molybdate precursors.

Electromagnetic waves reflected from and transmitted through the multilayer nanoresonators including main layer made of a bi-isotropic material or metamaterial sandwiched between dielectric, epsilon-near-zero metallic spacer layers have been analytically modeled. The numerical graphical analysis, based on exact solution electromagnetic boundary problem, confirms opportunities to use such as utr...

Since metal nanoparticles have a high surface-to-volume ratio and very active surface atoms, they are very attractive catalysts for a wide variety of organic and inorganic reactions, compared to bulk catalysts. Metal nanoparticles suspended in colloidal solutions and those adsorbed onto bulk supports have been used as catalysts for a wide variety of carbon-carbon bond formation reactions such a...

To exploit Rashba effect in a 2D electron gas on silicon surface for spin transport, it is necessary to have surface reconstruction with spin-split metallic surface-state bands. However, metals with strong spin-orbit coupling (e.g., Bi, Tl, Sb, Pt) induce reconstructions on silicon with almost exclusively spin-split insulating bands. We propose a strategy to create spin-split metallic bands usi...

Growing need for a variety of micro electro-mechanical systems necessitates advances in manufacturing technologies for high volume production at low cost. In this study, a mechanical micro pump actuator will be modelled using MEMS module of COMSOL simulation tool. The micro pump actuator will be based on bimetallic actuation which in-turn is based on the difference in the thermal expansion coef...