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Title: Driven assembly with multiaxial fields: Creating a soft mode in assemblies of anisometric induced dipoles

Abstract

In this paper, we show that multiaxial fields can induce time-averaged, noncentrosymmetric interactions between particles having polarization anisotropy, yet the multiaxial field itself does not exert either a force or a torque on an isolated particle. These induced interactions lead to particle assemblies whose energy is strongly dependent on both the translational and orientational degrees of freedom of the system. The situation is similar to a collection of permanent dipoles, but the symmetry of the time-averaged interaction is quite distinct, and the scale of the system energy can be dynamically controlled by the magnitude of the applied multiaxial field. In this paper, the case of polarizable rods is considered in detail, and it is suggested that collections of rods embedded in spheres can be used to create a material with a dynamically tunable magnetic permeability or dielectric permittivity. We report on Monte Carlo simulations performed to investigate the behavior of assemblies of both multiaxial-field induced dipoles and permanent dipoles arranged onto two-dimensional lattices. The ground state of the induced dipoles is an orientational soft mode of aligned dipoles, whereas that of the permanent dipoles is a vortex state.

Authors:
 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1235289
Alternate Identifier(s):
OSTI ID: 1421107
Report Number(s):
SAND-2015-3836J
Journal ID: ISSN 0021-8979; 583966
Grant/Contract Number:  
AC04-94AL85000; FWP Number: 12-014113
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 118; Journal Issue: 02; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; polarization; ground states; Monte Carlo methods; polarizability; tensor methods

Citation Formats

Martin, James E., and Swol, Frank Van. Driven assembly with multiaxial fields: Creating a soft mode in assemblies of anisometric induced dipoles. United States: N. p., 2015. Web. doi:10.1063/1.4923301.
Martin, James E., & Swol, Frank Van. Driven assembly with multiaxial fields: Creating a soft mode in assemblies of anisometric induced dipoles. United States. https://doi.org/10.1063/1.4923301
Martin, James E., and Swol, Frank Van. Fri . "Driven assembly with multiaxial fields: Creating a soft mode in assemblies of anisometric induced dipoles". United States. https://doi.org/10.1063/1.4923301. https://www.osti.gov/servlets/purl/1235289.
@article{osti_1235289,
title = {Driven assembly with multiaxial fields: Creating a soft mode in assemblies of anisometric induced dipoles},
author = {Martin, James E. and Swol, Frank Van},
abstractNote = {In this paper, we show that multiaxial fields can induce time-averaged, noncentrosymmetric interactions between particles having polarization anisotropy, yet the multiaxial field itself does not exert either a force or a torque on an isolated particle. These induced interactions lead to particle assemblies whose energy is strongly dependent on both the translational and orientational degrees of freedom of the system. The situation is similar to a collection of permanent dipoles, but the symmetry of the time-averaged interaction is quite distinct, and the scale of the system energy can be dynamically controlled by the magnitude of the applied multiaxial field. In this paper, the case of polarizable rods is considered in detail, and it is suggested that collections of rods embedded in spheres can be used to create a material with a dynamically tunable magnetic permeability or dielectric permittivity. We report on Monte Carlo simulations performed to investigate the behavior of assemblies of both multiaxial-field induced dipoles and permanent dipoles arranged onto two-dimensional lattices. The ground state of the induced dipoles is an orientational soft mode of aligned dipoles, whereas that of the permanent dipoles is a vortex state.},
doi = {10.1063/1.4923301},
journal = {Journal of Applied Physics},
number = 02,
volume = 118,
place = {United States},
year = {Fri Jul 10 00:00:00 EDT 2015},
month = {Fri Jul 10 00:00:00 EDT 2015}
}