Results 181 to 190 of about 9,972 (221)

Incorporating optical bistability into a magnetically bistable system: a photochromic redox isomeric complex

Chemical Communications, 2009
A photochromic cobalt-bis(dioxolene)spirooxazine metal complex has been synthesized which exhibits both photochromic and redox-active behavior, providing a potentially powerful approach to the development of optically induced changes in redox, magnetic, or optical properties of a metal center.
Michelle M, Paquette, Roni A, Kopelman, Elvira, Beitler, Natia L, Frank   +3 more
openaire   +2 more sources

Stochastic resonance in bistable magnetic wires

Physica A: Statistical Mechanics and its Applications, 2003
Abstract In bistable magnetic wires, the switching field H ∗ is an applied magnetic field sufficient to remagnetise a wire. The spectrum of the fluctuations of H ∗ depends on temperature. We demonstrate that this effect leads to a maximum of the thermal dependence of the amplitude of the wire magnetisation.
G Krupińska, P Gawroński, J.M Blanco, J Gonzalez, K Kułakowski   +4 more
openaire   +1 more source

Magnetic bistability of a single atom

Conference Digest. 2000 International Quantum Electronics Conference (Cat. No.00TH8504), 2005
Photon antibunching is a prime example of quantum fluctuations of the electrodynamic field of resonance fluorescence. In the entangled atom-photon system it is complementally accompanied by transient atomic Rabi oscillations. Polarization resolved resonance fluorescence reveals an analogous phenomenon which can be interpreted as magnetic bistability at
H. Schadwinkel, V. Gomer, D. Meschede
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Optical Bistability in a Magnetic Semiconductor

Journal of Optics, 2003
Recently magnetic semiconductors are found to exhibit optical histability. We, in this paper tried and succeded in giving a theoretical model for optical bistability in a magnetic semiconductor. Using this model it is found that the decrease of magnetic impurity concentration or interaction potential favours this bistability phenomenon.
Sukanta Kumar Tripathy, S. Ananda Rao
openaire   +1 more source

Magnetically induced bistable behavior of ferronematic liquid crystals

Physical Review E, 2013
In the framework of the modified model [S. V. Burylov and A. N. Zakhlevnykh, Phys. Rev. E 88, 012511 (2013)] of soft ferronematic liquid crystals, i.e., suspensions of needlelike ferroparticles in nematic solvents, we consider the ferronematic states with different mutual orientations of the director and magnetization.
S V, Burylov, A N, Zakhlevnykh
openaire   +2 more sources

Giant Magnetic Moments and Magnetic Bistability of Stoichiomatric MnO Clusters

Physical Review Letters, 1998
Ab initio calculations based on density functional theory and generalized gradient approximation reveal many unusual features of stoichiometric $(\mathrm{MnO}{)}_{x}$ $(x\ensuremath{\le}9)$ clusters that contrast with their bulk behavior. The clusters are ferromagnetic and carry atomiclike magnetic moments ranging from $4{\ensuremath{\mu}}_{\mathrm{B}}$
S. K. Nayak, P. Jena
openaire   +1 more source

Domain‐wall dynamics in bistable magnetic microwires

physica status solidi (a), 2009
AbstractIn the present work we give an overview on the domain‐wall dynamics in amorphous glass‐coated microwires with positive magnetostriction. They are characterized by a peculiar domain structure that allows us to study the magnetization process of a single domain wall. The domain‐wall dynamics is characterized by at least 4 regimes.
Rastislav Varga, Yuriy Kostyk, Kornel Richter, Arcady Zhukov, Manuel Vazquez   +4 more
openaire   +1 more source

Evaluation of use of magnetically bistable microwires for magnetic labels

physica status solidi (a), 2010
AbstractThe dynamics of the magnetization reversal by means of head‐to‐head domain‐wall propagation is investigated both experimentally and theoretically for magnetic labels made from Fe‐rich bistable glass‐coated microwires. It is shown that the amplitudes of the electromagnetic harmonics generated by bistable Fe‐rich magnetic labels of the length 1–4 
Sergey Gudoshnikov, Nikolai Usov, Arcady Zhukov, Valentina Zhukova, Pavel Palvanov, Boris Ljubimov, Olga Serebryakova, Sergey Gorbunov   +7 more
openaire   +1 more source

A Magnet‐Driven Soft Bistable Actuator

Advanced Functional Materials
AbstractBistable morphing structures are widely used as actuation mechanisms in soft actuators, soft robotics, energy absorbers, mechanical computers, optical lenses, metamaterials, and flexible electronics. However, untethered actuators, repetitive actuators, and hybrid‐assembly (containing in‐plane‐assembly and out‐of‐plane‐assembly) actuators remain
Zhou Chen, Shangcheng Kong, Yunhu He, Shiting Chen, Wanying Wang, Lihan Jin, Shun Zhang, Ying Hong, Lulu Pan, Haikun Wu, Youneng Xie, Changhong Linghu, Zhengyi Mao, Zhengbao Yang, Chi Hou Chan, Jizhou Song, Jian Lu   +16 more
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BISTABLE MAGNETIC PROXIMITY SENSOR

2010
The present invention relates to a bistable magnetic proximity sensor particularly adapted to be used in conjunction with a control system for a moving platform, comprising a casing (10) in which there are mounted at least one thin reed-like actuation plate or strip (26) provided with magnetic polarities oriented according to a first direction, and ...
STEM SRL, MORO SIMONE, MORO FABIO
openaire   +1 more source