Geometry-dependent critical currents in superconducting nanocircuits

In this paper we calculate the critical currents in thin superconducting strips with sharp right-angle turns, 180-degree turnarounds, and more complicated geometries, where all the line widths are much smaller than the Pearl length $\Lambda = 2 \lambda^2/d$. We define the critical current as the current that reduces the Gibbs free-energy barrier to zero. We show that current crowding, which occurs whenever the current rounds a sharp turn, tends to reduce the critical current, but we also show that when the radius of curvature is less than the coherence length this effect is partially compensated by a radius-of-curvature effect. We propose several patterns with rounded corners to avoid critical-current reduction due to current crowding. These results are relevant to superconducting nanowire single-photon detectors, where they suggest a means of improving the bias conditions and reducing dark counts. These results also have relevance to normal-metal nanocircuits, as these patterns can reduce the electrical resistance, electromigration, and hot spots caused by nonuniform heating.Comment: 29 pages, 24 figure

A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)

Meeting abstrac

Autogenic training programme for aviation staff Amsterdam, 13th January - 12th March 1982: an analysis of results

SIGLELD:f82/2904 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Introduction to collaborative online learning

This collaborative learning object (CLO) is designed to help colleagues and students explore the online tools they will be using with other course participants. It also provides opportunities to explore some of the concepts that underpin the work of the course team to create such CLOs. This resource was produced by a project at London South Bank University (LSBU) to create Open Educational Resources (OERs) funded by JISC and the HEA. It shares OERs created to support Level 7 courses in the areas of research methods, education for sustainability and creating such CLOs. The project wiki address is http://blockedoers.pbwiki.com

Creating Collaborative Learning Objects

This Collaborative Learning Object (CLO) is designed to help colleagues create such resources for use with their own students. The aim of this workshop is to help them design a course and to consider the individual learning activities (or objects) that their students will engage with. It also explores the skills they need to make what they design a reality. This resource was produced by a project at London South Bank University (LSBU) to create Open Educational Resources (OERs) funded by JISC and the HEA. It shares OERs created to support Level 7 courses in the areas of research methods, education for sustainability and creating such CLOs. The project wiki is available at http://blockedoer.pbwiki.com.

Autogenic training programme for aviation staff Amsterdam, 13th January - 12th March 1982: an analysis of results

SIGLELD:f82/2904 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

'The supervision' as observed during a tour of USA atomic energy and chemical plants 1970

SIGLELD:f82/2905 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Reducing response times and increasing safety at emergency incidents. Pt. 2 Technical report: travelling fellowships 1983

SIGLELD:84/09217(Reducing) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Modern techniques in market gardens of Holland and Germany

SIGLELD:f82/2908 / BLDSC - British Library Document Supply CentreGBUnited Kingdo