A technique has been developed for fabricating three dimensional "hair brush" electrode arrays from monocrystalline silicon blocks. Arrays consist of a square pattern of 100 penetrating electrodes, with 400 microns interelectrode spacing. Each electrode is 1.5mm in length and tapers from about 100 microns at its base to a sharp point at the tip. The tips of each electrode are coated with platin...

The platinum butadiynyl complex trans-(C(6)F(5))(p-tol(3)P)(2)Pt(C≡C)(2)H and a CuI adduct of a 1,10-phenanthroline based 33-membered macrocycle react in the presence of K(2)CO(3) and I(2) or O(2) to give a rotaxane (ca. 9%) in which the macrocycle is threaded by the sp carbon chain of trans,trans-(C(6)F(5))(p-tol(3)P)(2)Pt(C≡C)(4)Pt(Pp-tol(3))(2)(C(6)F(5)). The crystal structure and macrocycle...

This paper aims to evaluate a Type-II insulated wire (i.e., Glass fibre wire) as function of thermal ageing time based on partial discharges (PD) activity. Partial discharge inception voltage (PDIV), extinction (PDEV), and repetitive (RPDIV) measurements have been performed both unaged thermally aged specimens. Each specimen modelled the turn-to-turn insulation; hence it was made by pair wires ...

Bond wire lift-off is one of the major failure mechanisms in insulated gate bipolar transistor (IGBT) modules. Detecting fault bond wires important to avoid open-circuit IGBT ensure reliable operation power converters. In this paper, we propose a novel fatigue detection method for IGBT, which could be used normal working conditions. Firstly, investigated dependence on heatsink thermal resistanc...

H. Bassen, A. Kam, W. Kainz, G. Mendoza, H. Wang Center for Devices and Radiological Health, Food and Drug Administration, Rockville, MD, United States, Diagnostic Radiology Department, National Institutes of Health, Bethesda, MD, United States Introduction – Potentially dangerous heating occurs at the narrow tip of certain medical implants in patients being imaged by standard MRI systems [1, 2...