Coiled coils have attracted considerable interest as design templates in a wide range of applications. Successful coiled-coil design strategies therefore require a detailed understanding of coiled-coil folding. One common feature shared by coiled coils is the presence of a short autonomous helical folding unit, termed "trigger sequence," that is indispensable for folding. Detailed knowledge of ...

A critical component of the 1.3-GHz NMR Magnet (1.3G) program, currently ongoing at the Francis Bitter Magnet Laboratory, Plasma Science and Fusion Center, MIT and now approaching its final stage, is the all high-temperature superconductor (HTS) 800-MHz insert (H800). The insert consists of three nested DP coils fabricated with 6-mm wide REBCO conductor. Coil 1, the innermost coil of H800 has a...

Conditions for load-independent output voltage or current in two-coil wireless power transfer (WPT) systems have been studied. However, analysis of load-independent output current in three-coil WPT system is still lacking in previous studies. This paper investigates the output current characteristics of a three-coil WPT system against load variations, and determines the operating frequency to a...

A surface coil for MRI consisted of two concentric loops was developed to produce brain images with a commercial MR imager. Prior to build the coil prototype, the magnetic field (B1) generated by the coil was numerically simulated. This field simulation is based on the Biot-Savart law for the circularand square-shaped loop coils. From these theoretical results, we can appreciate an improvement ...

We describe the development of hemolysis from moderate residual shunting across a patent ductus arteriosus following coil embolization. The fall in hemoglobin levels from 11.6 to 6.0 gm/dl necessitated a second coil procedure which resulted in complete closure of the residual shunting and resolution of hemolysis. Therefore, appearance of anemia following coil embolization of patent ductus arter...

We are studying the undersea wireless power transfer to probes. One of problems is that transmission efficiency decreases due misalignment receiving coil caused by tidal currents. By bending spiral used as coil, magnetic fluxes, which does not interlink transmitting and can link coils magnetically. The increase interlinked fluxes suppresses decrease in case misalignment. using a bent compared w...

Metal-detector performance depends heavily on the sensor head. Errors in coil placement within the head can lead to degradation in detector performance. Electromagnetic modelling of typical very-low-frequency detector heads shows the effect of coil placement errors on detector sensitivity. Provided the bucking coil ‘tracks’ the receive coil, required error corrections can remain small. A correc...