We propose IM6D, a novel real-time magnetic motion-tracking system using multiple identifiable, tiny, lightweight, wireless and occlusion-free markers. It provides reasonable accuracy update rates an appropriate working space for dexterous 3D interaction. Our follows electromagnetic induction principle to externally excite LC coils uses located pickup coil array track each of the with 5-DOF. apply this design practical markers 6-DOF achieve reliable tracking speed. also solved principle's...

Various magnetic micro-robots driven by an external field have recently been suggested for bio-medical application. The main benefit of control using that it is wireless and the robot battery-free. Most locomotion methods depend on swimming method alternatiing field. In addition, a rotating has used spiral method. this paper, we propose new mechanism within three-axis Helmholtz coil. proposed based snake-like skeletal motion consists NdFeB spherical magnet, artificial spine, ribs. This...

With the aim of improving detection accuracy a wireless magnetic position-sensing system using an <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> resonant marker, pickup coil with optimal size (10 mm in diameter × thick), as calculated by previous simulation study, was used and tested this paper. Our study confirmed that positional errors were reduced to submillimeter order area within xmlns:xlink="http://www.w3.org/1999/xlink">y</i> =120...

The magnetic domain structure on the (0 0 1) plane of an Fe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">16.1</sub> Ga xmlns:xlink="http://www.w3.org/1999/xlink">83.9</sub> single crystal grown by Czochralski method was observed magneto-optic Kerr effect microscopy. In zero field, four different phases appeared, with magnetization in kinds '1 easy directions plane. That is, field composed straight 90° walls and stair-like 180° walls. When a...

A detection technique having an accuracy of better than 1 mm is required for body motion analysis in the field medical treatment. wireless magnetic capture system one such effective technique. We propose a candidate using LC resonant marker (LC marker). Previous studies have showed that capable repeatable position if has adequate signal-to-noise (S/N ratio). However, there are some cases which results include unignorable errors because approximations, e.g. dipole assumption marker, applied...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Recently, materials and locomotion control methods of micro robot have been developed for applying to the biomedical application. Especially, many researches biomimetics magnetic actuators introduced. In this paper, we introduced methodology dynamic actuation flexible actuator so as drive robot. Proposed presents both static motion by correlation between moment rotating field. This method can...

Magnetic robots have been studied in the past. Insect-type micro-robots are used various biomedical applications; researchers developed inchworm for endoscopic use. A biological has a looping locomotion gait. However, most depend on general bending, or bellows, motion. In this paper, we introduce new robotic mechanism using magnetic force and torque control rotating field The proposed robot is controlled by torque, attractive force, body mechanisms (two stoppers, flexible body, different...

This paper presents a biologically inspired fish-robot driven by single flexible magnetic actuator with rotating field in three-axis Helmholtz coil. Generally, fish-robots are powered alternating and gradient fields, which provide motion such as bending the fish-robot's fins. On other hand, an external can create several gaits vibration, twisting their combination. Most fish-like micro-robots do not have pectoral fins on side simply propelled tail fin. The proposed robot swim perform variety...

Rotational magnetic loss in core materials has been examined with respect to the direction of rotation at high flux density by a newly developed two-dimensional measurement method. The rotational losses clockwise or anticlockwise directions depend largely on inclination angle filed sensing axis orthogonal axes. changes first appear 1.5 T accordance decrease phase difference between field H and B.

We examined the strain sensor using inverse magnetostriction effect to obtain high sensitivity. Since is composed of a conductive layer sandwiched between two magnetostrictive films, impedance low compared with former works. Therefore, sensitivity can be significantly improved due increase change ratio. The molybdenum as exhibited higher large ratio caused by anisotropy induced width direction films. In this study, for sample whose size 0.5 mm in and 2 ¿m thickness, we could highest 18 000.

In this paper, we present a pushing force mechanism in magnetic spiral-type machine for use therapy and diagnosis. Non of the current machines can create force. Thus, their locomotion or tasks are controlled by field strength driving frequency. However, proposed increases thrust on robot itself working space without controls. The developed uses suspension structure based two magnets between machines. Through mechanism, act independently via rotating field. different forces variation...

Controlling the structure composed of soft and hard magnetic phases at nanoscale is key to fabricating nanocomposite magnets with efficient exchange coupling. In our previous study, films containing ferrite nanoparticles were fabricated by a combination electrophoretic deposition electroplating show one possibility controlling three-dimensionally applying self-assembly nanoparticles. To expand this method fabrication magnets, use metal desired. paper, we attempted fabricate Fe–Co in Fe–Pt...

In this paper, we investigate the effects of easy axis direction against magnetoimpedance elements on stepped impedance properties. The angle between and element width is changed from 0° to 90°, examine resulting profiles. magnetic field at which highest shifts a lower with increasing angles, can be explained by bias susceptibility theory. On other hand, changes appear for an in range 35°–75°. We confirmed property through our observations that those jumps occur transitional points domain...

Thermal elasticity and electrical resistivity with the magnetic phase transition were studied in FeRh alloy films prepared by ion-beam sputtering subjected to post-annealing. Fe/sub 49.7/Rh/sub 50.3/ 48.9/Rh/sub 51.1/ deposited on conventional glass substrate post-annealing at 600/spl deg/C for 90 min, respectively. Both show a considerably sharp transition. In particular, film exhibits small thermal hysteresis of about 20/spl width, which is only 2 times over than that bulk. Furthermore,...

This paper proposes a simple method for predicting the magnetic losses of electrical steel sheets. By using this method, under arbitrary induction waveform with or without minor loops from loss data only sinusoidal excitation can be estimated.

We propose a new system for sensing the position of wireless magnetic marker. It consists resonating marker, driving coils, and pickup coils. The marker does not have battery or electric wires. has an accuracy around 2 mm, it can be used highly accurate without shielding, because is free from earth field noise.

Abstract In general, a blood pump must be small, have simple configuration, and sufficient hydrodynamic performance. Herein, we introduce new mechanisms for wireless that is small provides battery‐free operation. To achieve operation, implement magnetic torque force control methods use two external drivers: an coil permanent magnet with DC ‐motor, respectively. Power harvesting can used to drive electronic circuit monitoring (the observation of the conditions temperature) without internal...

This paper presents a magnetic centrifugal pump, driven by an external rotating field, for use in artificial heart-assist blood pumps. The magnet rotor the pump is synchronized to which then causes fabricated impeller produce force pump. Because direct application of proposed does not require shaft or mechanical bearings. Thus, mechanism and driving source give advantages compact size; wireless, battery-free operation; heat-free minimal risk bacterial infections. weight, length, diameter are...

3D motion tracking is one key technology in computer animation, virtual reality, natural user interface, and so on. Over the last thirty years numerous projects with various approaches have developed systems, including mechanical, ultrasonic, magnetic, optical schemes. Recently, interest has also been growing of small targets complex environments subtle movements. For example, behavior analysis insects or other creatures earth will contribute to growth biology related sciences, precise...

Highly accurate wireless motion capture system using LC resonant magnetic marker has been developed. The consists of soft core with wound coil and a chip capacitor without battery or electric wires, driven wirelessly by the action electromagnetic induction. realized position accuracy is less than 1 mm within space 150 from pickup array. Compared dc system, proposed applicable for precision motion-capturing under optically isolated shielding because not influenced very much earth field noise.

A wireless multi-motion capture system using five LC resonant magnetic markers has been developed and is demonstrated. Each marker an individual frequency, 157, 201, 273, 323, 440 kHz, respectively. new measuring technique applied in order to reduce the acquisition time. In this are excited by a superposed wave corresponding all frequencies, while voltage signals induced through pick-up coils separated frequency spectrum FFT analysis. Regardless of number markers, amplitude for each can be...