Technology of High Density Build-up Wiring Board.

Optical interconnect on printed wiring board

Integration of high-speed parallel optical interconnects into printed wiring boards (PWB) is studied. The aim is a hybrid optical–electrical board including both electrical wiring and embedded polymer waveguides. Robust optical coupling between the waveguide and the emitter/detector should be achieved by the use of automated pick-and-place assembly. Different coupling schemes were analyzed by c...

Printed Wiring Board Pollution Prevention and Control Technology: Analysis of Updated Survey Results

Printed Wiring Board Pollution Prevention and Control Technology: Analysis of Updated Survey Results

Wiring Up Superconducting Qubits

A Viewpoint on: Realization of Microwave Quantum Circuits Using Hybrid Superconducting-Semiconducting Nanowire Josephson Elements G. de Lange, B. van Heck, A. Bruno, D. J. van Woerkom, A. Geresdi, S. R. Plissard, E. P.A.M. Bakkers, A.R. Akhmerov, and L. DiCarlo Physical Review Letters 115, 127002 2015 – Published September 14, 2015 Semiconductor-Nanowire-Based Superconducting Qubit T.W. Larsen,...

Wiring Up Displacement Currents

Realizing that conduction currents couldn’t sufficiently explain the behavior of capacitors, Maxwell postulated the existence of displacement currents and changed the face of electromagnetics forever. Conduction currents (Jf ) involve the transport of “free” electrical charges, and in Ampere’s law (∇×H = Jf ) they are the sole source of curled magnetic fields. Maxwell realized that time-varying...