Brittle solder joints in Electroless Ni electroless Pd immersion Au (ENEPIG) surface finishes are one of the key re­ liability issues in electronics assembly. Previous characterization of the reflow process has indicated that interfa­ cial voids formed after solder reflow are responsible for the decreases in solder joint strength. However, the mechanisms behind the formation of these voids in t...

Nobel-metal based bimetallic nanoparticles (BNPs) are composed of two different metals presenting heteroatom interactions. In these nanomaterials it is possible to tune the relative composition that allows for modulation electronic and catalytic properties. They great interest their technological industrial applications due properties which may exceed those monometallic analogue structures. A t...

Reddish Au condensates, predominant atom clusters and minor amount of multiply twinned particles and fcc nanoparticles with internal compressive stress, were produced by pulsed laser ablation on gold target in de-ionized water under a very high power density. Such condensates were self-assembled as lamellae and then nano- to micro-diameter tubes with multiple walls when aged at room temperature...

Kai-Ming G. Fu,1,2 Taylor A. Johnston,1,2 Ankoor S. Shah,1,2 Lori Arnold,3 John Smiley,2 Troy A. Hackett,4 Preston E. Garraghty,3 and Charles E. Schroeder1,2 1Albert Einstein College of Medicine, Bronx, New York 10461, 2Nathan Kline Institute, Orangeburg, New York 10962, 3Department of Psychology, Program in Neural Science, Indiana University, Bloomington, Indiana 47405, and 4Vanderbilt Univers...

We studied the evolution of dealloying-induced strain along the {111} in a Ag-Au nano-crystal in situ, during formation of nanoporous gold at the initial stage of dealloying using Bragg coherent X-ray diffractive imaging. The strain magnitude with maximum probability in the crystal doubled in 10 s of dealloying. Although formation of nano-pores just began at the surface, the greatest strain is ...

Nanoporous templates have been developed and fabricated employing technology based on heavy ion bombardment and track etching of polymer films or polymer layers deposited on substrates; an alternative and unique tool based on the adaptation of an atomic force microscopy has been also developed to elaborate nanotemplates with pores of ultra-small dimensions down to a few nanometers. Different ty...

We report on the formation of UV emitting Si nanoclusters (NCs) in Si, using a two stage Au implantation technique. These Si NCs, with an average size of 2 nm, show photoluminescence at room temperature, over a narrow band of about 100 meV with a peak of emission near 3.3 eV. With emission lifetimes in the range of 1.5-2.5 ns, the transitions seem to come from excitonic recombinations across a ...