Manipulation of Magnetic Nano-Particles with Strain Mediated Multiferroics

ORAL

Abstract

Strain mediated multiferroic systems provide an energy-efficient path to the manipulation of magnetic nano-particles for small scale mechanical, electrical, and biological applications. In this system, there is a magnetoleastic disk, a piezoelectric substrate and soft magnetic nano particles near the disk. The simulation consists of 1) voltage generated piezo-strains; 2) disk magnetic spin reorientation; and 3) the dynamic nano-particle movement. The particle dynamic model includes both translation and rotation considering: magnetic force, fluid drag, frictional force. The particle movement is studied for three dynamic cases with different frictional and drag coefficients: underdamped, critically damped and over damped. When the frictional and drag forces are small, the particle follows the rotation with a lag angle at steady state. The lag angle highly depends on the rotating frequency and the frictional/drag coefficients. When the frictional and drag forces further increase, the particle detaches from the disk when a critical velocity is reached. This work provides guidance on how to implement magnetic particle manipulation for a wide range of applications.

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Presenters

  • Cai Chen

    Mechanical and Aerospace Engineering, University of California, Los Angeles, Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Univ of California - Los Angeles

Authors

  • Cai Chen

    Mechanical and Aerospace Engineering, University of California, Los Angeles, Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Univ of California - Los Angeles

  • Robert Dyro

    Mechanical and Aerospace Engineering Department, University of California, Los Angeles

  • Greg Carman

    Department of Mechanical and Aerospace Engineering, UCLA, MAE Department, UCLA, Mechanical and Aerospace Engineering, University of California, Los Angeles, Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Mechanical and Aerospace Engineering Department, Univ of California - Los Angeles, Univ of California - Los Angeles, Department of Mechanical and Aerospace Engineering, University of California, Los Angeles

  • Abdon Sepulveda

    MAE Department, UCLA, Mechanical and Aerospace Engineering, University of California, Los Angeles, Mechanical and Aerospace Engineering Department, University of California, Los Angeles, Mechanical and Aerospace Engineering Department, Univ of California - Los Angeles, Univ of California - Los Angeles