Electroless nickel (Ni) immersion gold (Au), commonly referred to by the acronym ENIG, is most common protective coating applied on exposed copper (Cu) traces of printed circuit boards (PCBs). In this work, we elucidate local corrosion mechanism ENIG-Cu system applying microscopic, surface analysis and electrochemical techniques with high spatial resolution provide a comprehensive understanding...

This paper reports the utilization of capillary microfluidics to rapidly create nanostructure-patterned electrodes for energy storage applications. Using patterned photoresist as open-channel capillary microfluidics, Tobacco mosaic virus (TMV) bio-nanoscaffolds suspended in solution are autonomously delivered onto planar gold electrodes over a 1 cm2 area. The TMVs assemble on the electrode and ...

One-dimensional flexible supercapacitor yarns are of considerable interest for future wearable electronics. The bottleneck in this field is how to develop devices of high energy and power density, by using economically viable materials and scalable fabrication technologies. Here we report a hierarchical graphene-metallic textile composite electrode concept to address this challenge. The hierarc...

INTRODUCTION The expression „multifunctional PCB“, as a synonym for a PCB which is applicable with a variety of assembly techniques, is already established on the market. That means the PCB can be used for multiple reflow soldering and multiple assembly techniques like, Al-wire bonding, Auwire bonding, conductive adhesives and other interconnection methods. In the mixed COB/SMT assembly, where ...

Effects of various surface treatments on hydrogen embrittlement 6061-T6 aluminum alloy were investigated. Rotary bending fatigue tests showed that electroless Ni-P plating reduced the strength considerably because absorbed into substrate by plating. These findings suggest possibility evaluating conducting rotary after

Magnetic and Electrical Resistivity Study of Electroless Amorphous Ternary System (Ni-Co-P) show a qualitative dependence of crystalline phases formed during transformation on the annealing temperature and composition. Electrical Resistivity values increases with increase in cobalt content and samples with higher resistivity show lower temperature coefficients. The Initial increase in magnetiza...

Ni-P Electroless coatings provide appropriate resistance to wear and corrosion. Co-deposition of particles between layers can improve their properties, especially general corrosion and erosion-corrosion behavior by means of nano diamond as reinforcing particles. In this study Ni-P/nano diamond composite deposition were deposited on steel substrate. Structure of the coatings and corrosion r...

We have analyzed the effects of immersion gold (i-Au) and electroless nickel (e-Ni) thickness, on the reliability of a semiconductor device which has special constraints on the absolute Ni and Au layer thickness. The electrochemical reactions involved in the deposition of immersion Au over Ni involves a substitution process by which Ni atoms are replaced by Au atoms. We demonstrate that in some...

Electroless nickel composite coatings have the potential for high-temperature tribological applications, and a combination of high wear resistance low friction factor is one desirable solutions but still tricky problem. The addition self-lubricating WS2 hard Si3N4 nanoparticles to Ni-P expected obtain good performance. In this work, Ni-P-Si3N4-WS2 with various contents were prepared using elect...