We consider the adiabatic demagnetization in the rotating reference frame (ADRF) of a system of dipolar coupled nuclear spins s = 1/2 in an external magnetic field. The demagnetization starts with the offset of the external magnetic field (in frequency units) from the Larmor frequency being several times greater than the local dipolar field. For different subsystem sizes, we have found from num...

Ultrashort pulses of extreme ultraviolet light from high-harmonic generation are a new tool for probing coupled charge, spin, and phonon dynamics with element specificity, attosecond pump-probe synchronization, and time resolution of a few femtoseconds in a tabletop apparatus. In this paper, we address an important question in magneto-optics that has implications for understanding magnetism on ...

An automatic method for synthesizing MEMS mask-layouts is presented. This method uses evolutionary algorithm techniques to optimize the mask-layouts for a forward simulation of fabrication. Initially, a random population of masklayouts is generated. The fabrication of each layout is simulated through a digital process simulator to produce a 3D fabricated shape, which is compared to a user-speci...

This paper presents a new trapped-field magnet made of second-generation high-temperature superconducting (2G HTS) rings. This so-called ring-shape 2G HTS magnet has the potential to provide much stronger magnetic fields relative to existing permanent magnets. Compared to existing 2G HTS trappedfield magnets, e.g. 2G HTS bulks and stacks, this new ring-shape 2G HTS magnet is more flexible in si...

In this paper we demonstrate a novel intra-procedural technique for detecting heap dependences in sequential programs that use recursive data structures. The novelty of our technique lies in the way we compute, for each statement, abstract heap access paths that approximate the locations accessed by the statement, and the way we convert these paths into equations that can be solved using tradit...

In the perception of gaits, the relative timing of the individual motions in a gait is critical. When events occur periodically, as they do in a gait, then relative timing is equivalent to phase. Therefore, to perceive gaits requires frequency entrainment (finding the fundamental frequency of the gait) and phase locking (finding the phase relationships among the components of the gait). In this...

We calculate the effective properties of a magnetostrictive composite in the dilute limit. The composite consists of well separated identical ellipsoidal particles of magnetostrictive material, surrounded by an elastic matrix. The free energy of the magnetostrictive particles is computed using the constrained theory of DeSimone and James [2002. A constrained theory of magnetoelasticity with app...

In this paper, a Switched Reluctance Motor (SRM) drive system is proposed to make trade-off between torque profile and vibration amplitude. the system, power factor correction fast demagnetization are achieved using single-phase Vienna rectifier as front-end converter for SRMs with nominal voltage equal half DC-link voltage. The three-level provides doubled negative in demagnetization, resultin...