Metal alloys have material properties that are very appealing for micro electro mechanical systems (MEMS), but present a challenge for process integration within a lithographic manufacturing sequence of the type used in the semiconductor industry. The batch-mode micro electrodischarge machining (μEDM) discussed here uses lithographically-fabricated electrode arrays with high density and high un...

Pyocyanin is a toxin produced by Pseudomonas aeruginosa. Here we describe a novel paper-based electrochemical sensor for pyocyanin detection, manufactured with a simple and inexpensive approach based on electrode printing on paper. The resulting sensors constitute an effective electrochemical method to quantify pyocyanin in bacterial cultures without the conventional time consuming pretreatment...

Physical phase plates (PP) for transmission electron microscopy (TEM) are intensively studied since the first carbon film-based and electrostatic PPs have been experimentally realized [1,2]. By inducing a phase shift on a part of the electrons in the back focal plane of the objective lens, contrast enhancement can be achieved. Several groups have already demonstrated proof-of-principle experime...

BACKGROUND Squeaking after ceramic-on-ceramic total hip arthroplasty is a relatively uncommon phenomenon. It usually does not require treatment in the absence of pain, mechanical symptoms, and/or relentless squeaking. The purpose of this investigation was to report on four patients who presented with hip pain and squeaking due to fractured ceramic liners after ceramic-on-ceramic total hip arthr...

Abstract Reversible protonic ceramic electrochemical cells (R‐PCECs) is one of the most promising devices for efficient energy conversion and storage due to high flexibility in reversible operation on dual modes fuel cell electrolysis cells. The key limitations R‐PCECs performance lie mainly sluggish catalytic activity poor durability air electrode oxygen evolution/reduction reactions under rea...

We made a semiquantitative study of the comparative histology of pseudomembranes from 12 loose cemented ceramic-ceramic and 18 metal-polyethylene total hip replacements. We found no significant difference in cellular reaction between the two groups, but there was a major difference in the origin of the particulate debris. In the metal-polyethylene group, polyethylene of articular origin was pre...