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The magnetic behavior of $Fe_{3-x}O_4$ nanoparticles synthesized either by high-temperature decomposition of an organic iron precursor or low-temperature co-precipitation in aqueous conditions, is compared. Transmission electron microscopy,…

A hybrid system composed of an isotropic nanoparticle and a semiconductor heterostructure with a quantum well has been considered. The nanoparticle is supposed to be polarizable in an external electric field. A theoretical model of the…

介观与纳米尺度物理 · 物理学 2012-06-22 V. A. Kochelap , S. M. Kukhtaruk

This research paper is intended to study the nanoparticles shapes on peristalsis of Casson fluid in a channel flow by considering Joule heating effects. The study of such flows has various relevance applications in biomedical engineering…

流体动力学 · 物理学 2021-12-01 Asha S K , Sunitha G

The dynamical response of Coulomb-interacting particles in nano-clusters are analyzed at different temperatures characterizing their solid- and liquid-like behavior. Depending on the trap-symmetry, both the spatial and temporal correlations…

无序系统与神经网络 · 物理学 2019-08-15 Biswarup Ash , J. Chakrabarti , Amit Ghosal

We investigate the effect of (weak) dipolar interactions on the field behavior of the temperature at the maximum of the zero-field-cooled magnetization of a polydisperse assembly of nanoparticles. For this purpose, we extend the…

统计力学 · 物理学 2009-11-11 M. Azeggagh , H. Kachkachi

Methods for controlling the motion of single particles, optically levitated in vacuum, have developed rapidly in recent years. The technique of cold damping makes use of feedback-controlled, electrostatic forces to increase dissipation…

Magnetic droplets are non-topological magnetodynamical solitons displaying a wide range of complex dynamic phenomena with potential for microwave signal generation. Bubbles, on the other hand, are internally static cylindrical magnetic…

It has been shown that under joint action of DC magnetic and AC electric fields neutral particles (atoms,molecules,nano-size particles etc.) nearby interface move with permanent velocity along the surface. The driving force depends on…

统计力学 · 物理学 2007-05-23 A. A. Ovchinnikov

We show that the observed non-monotonic behavior of the thermal conductance between two nanoparticles when they are brought into contact is originated by an intricate phase space dynamics. Here it is assumed that this dynamics results from…

介观与纳米尺度物理 · 物理学 2009-07-27 Agustin Pérez-Madrid , Luciano C. Lapas , J. Miguel Rubí

Coagulation growth kinetics of nanoparticles in plasma is affected by inter-particle electrostatic forces due to charging phenomenon. In stationary plasmas, unipolar charging of particles results in retardation of particles growth and may…

等离子体物理 · 物理学 2019-06-26 V. Vekselman , M. N. Shneider , Y. Raitses

Electrically charged particles, such as the electron, are ubiquitous. By contrast, no elementary particles with a net magnetic charge have ever been observed, despite intensive and prolonged searches. We pursue an alternative strategy,…

强关联电子 · 物理学 2011-11-08 Claudio Castelnovo , Roderich Moessner , Shivaji L. Sondhi

Active particles break out of thermodynamic equilibrium thanks to their directed motion, which leads to complex and interesting behaviors in the presence of confining potentials. When dealing with active nanoparticles, however, the…

软凝聚态物质 · 物理学 2021-03-29 Falko Schmidt , Hana Šípovà-Jungová , Mikael Käll , Alois Würger , Giovanni Volpe

The heating of particles by plasma radiation plays a critical role in space science involving dusty plasma as well as in industrial processes such as plasma vapor deposition, microchip production, etching and plasma fusion. Numerical…

等离子体物理 · 物理学 2025-09-09 A. Povitsky , M. N. Shneider

We study the role of magnetic monopoles at high enough temperature $T>2T_c$, when they can be considered heavy, rare objects embedded into matter consisting mostly of the usual "electric" quasiparticles, quarks and gluons. We review…

高能物理 - 唯象学 · 物理学 2009-09-02 Claudia Ratti , Edward Shuryak

A two dimensional magnetic particle in the presence of an external magnetic field is studied. Equilibrium thermodynamical properties are derived by evaluating analytically the partition function. When the external field is applied…

凝聚态物理 · 物理学 2009-11-07 P. Vargas , D. Altbir , M. Knobel , D. Laroze

Helium nanodroplets doped with polar molecules are studied by electrostatic deflection. This broadly applicable method allows even polyatomic molecules to attain sub-Kelvin temperatures and nearly full orientation in the field. The…

原子与分子团簇 · 物理学 2019-07-26 John W. Niman , Benjamin S. Kamerin , Daniel J. Merthe , Lorenz Kranabetter , Vitaly V. Kresin

We briefly introduce the formalism for describing dipolar molecules in an ultracold gaseous environment. This treatment includes the quantum mechanical states of the dipoles, the electric fields they produce, and their interactions with one…

原子物理 · 物理学 2009-01-05 John L. Bohn

Levitated particles are an ideal tool for measuring weak forces and investigating quantum mechanics in macroscopic objects. Arrays of two or more of these particles have been suggested for improving force sensitivity and entangling…

量子物理 · 物理学 2023-05-01 T. W. Penny , A. Pontin , P. F. Barker

Electrostatic cooling is known to occur in conductors and in porous electrodes in contact with aqueous electrolytes. Here we present for the first time evidence of electrostatic cooling at the junction of two electrolyte phases. These are,…

化学物理 · 物理学 2019-12-24 S. Porada , H. V. M. Hamelers , P. M. Biesheuvel

Artificial spin ices (ASI), containing magnetic monopole quasi-particles emerging at room temperature, have been investigated as a promising system to be applied in alternative low-power information technology devices. However, restrictions…

介观与纳米尺度物理 · 物理学 2024-06-26 D. G. Duarte , S. F. de Souza , L. B. de Oliveira , E. B. M. Junior , E. N. D. de Araujo , J. M. Fonseca , C. I. L. de Araujo