Abstract The ongoing development of electromagnets based on high temperature superconductors has led to the conceptual exploration high-magnetic-field fusion reactors tokamak type, operating at on-axis fields above 10 T. In this work we explore consequences potential future availability high-field three-dimensional physics design point a stellarator reactor. We find that, when an increase in ma...

We present a novel method for mapping and localization in indoor environments using a wearable gesture interface. The ear-mounted FreeDigiter device consists of an infrared proximity sensor and a dual axis accelerometer. A user builds a topological map of a new environment by walking through the environment wearing our device. The accelerometer is used to identify footsteps while the proximity ...

An implantable sensor system has been developed to explore the physiological behaviour of the bladder wall. It consists of a 3-axis digital accelerometer and a pressure sensor on the upper side of a flexible polyimide printed circuit board. On the bottom side, two metallic hooks prevent migration of the device in the bladder wall while simultaneously acting as electrodes to record the electrica...

An optimized end pole compensation scheme for the 1.8 Tesla, 25-pole wiggler W20/SRRC was studied by using 2D magnetostatic code OPERA-2d. The maximum deviation of the dipole steering for this wiggler can be minimized either by optimizing the sizes of the bias magnets or by optimizing the easy-axis rotating angles of the permanent rotators. After optimization, the dipole steering is within 100 ...

This paper presents techniques of integrating haptic device into computer-aided design and manufacturing. The methodology is proposed as three steps: 1) develop the virtual sculpting system for aiding product design; 2) convert the product design into acceptable form for downstream manufacturing or rapid prototyping; 3) develop multi-axis polyhedral machining planning system with haptic input. ...

A confocal reflectance microscope has been developed that incorporates a dual-wedge scanner to reduce the size of the device relative to current raster scanning instruments. The scanner is implemented with two prisms that are rotated about the optical axis. Spiral and rosette scans are performed by rotating the prisms in the same or opposite directions, respectively. Experimental measurements s...

Five different commonly prescribed ankle-foot devices for below-knee prostheses were tested for effects on gait: SACH, SAFE, SEATTLE, SINGLE AXIS, and MULTIPLE AXIS. Subjective ratings by the amputees served to resolve which physical variables determined the preferred ankle-foot device. Ratings were related to age, body weight, length of residual limb, and ratio of stride frequency to stride le...

This paper reports a new 2-degree of freedom (2-dof) micromachined MEMS nanopositioner with the actuation and sensing elements on the same chip. The features of this new MEMS device are: its 2-dof (x-y axis) motion capability, the achievement of bi-directional movement (positive and negative displacement) along each axis thanks to the use of Z-shaped electrothermal actuators, and the measuremen...

Oblivious manipulation of the device by the patient is referred to as "Twiddler's" syndrome. It is characterized by the coiling of the pacemaker lead due to the rotation of the pacemaker generator on its long axis. However, the rotation of the pacemaker generator on its transverse axis with subsequent coiling of the pacemaker leads around the pulse generator is called as ''Reel syndrome''. In t...

Human-robot interaction sensing is a compulsory feature in modern robotic systems where direct contact or close collaboration is desired. Rehabilitation and assistive robotics are fields where interaction forces are required for both safety and increased control performance of the device with a more comfortable experience for the user. In order to provide an efficient interaction feedback betwe...