We report the development of an instrumentation and control system instantiated on a microprocessor-field programmable gate array (FPGA) device for a harmonic oscillator comprising a portion of a magnetic resonance force microscope. The specific advantages of the system are that it minimizes computation, increases maintainability, and reduces the technical barrier required to enter the experime...

Static magnetic undulators used by x-ray light sources are fundamentally too limited to achieve shorter undulator periods and dynamic control. To overcome these limitations, we report experimental demonstration of a novel short-period microwave undulator, essentially a Thomson scattering device, that has yielded tunable spontaneous emission and seeded coherent radiation. Its equivalent undulato...

OBJECTIVE To investigate the effects of microcurrent cranial electrical stimulation (CES) therapy on activity in pain processing brain regions. DESIGN A randomized, controlled, three-group, double-blind pilot study. PARTICIPANTS Persons with physician-diagnosed fibromyalgia. INTERVENTION Active CES device, sham device, and usual care alone. RESULTS Those individuals using the active dev...

We present a single cell detection device based on magnetic bead assay and micro Coulter counters. This device consists of two successive micro Coulter counters, coupled with a high gradient magnetic field generated by an external magnet. The device can identify single cells in terms of the transit time difference of the cell through the two micro Coulter counters. Target cells are conjugated w...

In this paper the Paul’s trap placed in a homogeneous static magnetic field is presented. The motion of ions in such system is investigated. It is shown that such system can work in two regimes: as a mass-spectrometer and as a device which separates a particle beam depending on the mass and specific charge. An application of the external static magnetic field gives a possibility to work for a n...

A device is described which is designed to refuel tokamaks of major radius -1 m and magnetic field -1 T by the injection of a compact torus. The injector utilizes an acceleration stage which adds kinetic energy to the compact torus so that it can penetrate the tokamak magnetic field. The performance of the device was found to be optimized in an unexpected parameter regime. It is theorized that ...

he controversy over whether pacemaker patients should be llowed in the magnetic resonance imaging (MRI) suite is ot new (1). With nearly 250 device patients reportedly aving undergone safe magnetic resonance (MR) scanning, ome investigators suggest selected pacemaker patients ight safely undergo MRI (2–5). Nevertheless, many auhorities such as Pinski and Trohman (6), flatly state that R scannin...

We consider resonant vortices around nodal points of the wavefunction in electron transport through a mesoscopic device. With a suitable choice of the device geometry, the dominating role is played by single vortices of a preferred orientation. To characterize strength of the resulting magnetic moment we have introduced a magnetance, the quantity defined in analogy with the device conductance. ...

Optical characteristics and construction of a focusing device for collecting low-energy n-mesons in a solid angle of about 4nsr are considered. The focusing device is an axially-symmetric magnetic lens with magnetic field of ~ 100 kOe and pulsating current of ~ 1.4 MA. Parameters of a supply system operating at several hertz rate are given. At area of 100 cm 2 in the focus plane of the system t...

In this paper, we report an experimental realization of quantum switch using nuclear spins and magnetic resonant pulses. The nuclear spins of H and C in carbon13 labelled chloroform are used to carry the information, then nuclear magnetic resonance pulses are applied to perform either bypass or cross function to achieve the switching. Compared with a traditional space or time domain switch, thi...