Imaging Néel Relaxation of Superparamagnetic Nanoparticles using Diamond Magnetic Microscopy

ORAL

Abstract

Widefield diamond magnetic microscopy using nitrogen-vacancy centers is an emerging technique in various fields, including the study of magnetic materials. Superparamagnetic iron-oxide nanoparticles (SPIONs) are of interest for biomedical imaging applications, many of which would benefit from characterizing SPION Néel relaxation times at the single-particle level. Here, we report progress on the use of diamond magnetic microscopy to study the magnetic relaxation dynamics of single SPIONs and characterize their heterogeneity.

*NSF DMR-1809800, NIH 1R21EB027405, and access to the DOE Center for Integrated NanoTechnologies user facilities.

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Presenters

  • Bryan A Richards

    • University of New Mexico

Authors

  • Bryan A Richards

    • University of New Mexico

  • Nate Ristoff

    • University of New Mexico

  • Abdelghani Laraoui

    • University of Nebraska - Lincoln

  • Ilja Fescenko

    • University of Latvia

  • Joshua Damron

    • Oak Ridge National Laboratory

  • Nazanin Mosavian

    • University of New Mexico

  • Janis Smits

    • University of New Mexico

  • Andrey Jarmola

    • ODMR Technologies Inc.
    • University of California Berkeley and US Army Research Lab Adelphi

  • Pauli Kehayias

    • Sandia National Laboratory

  • Maziar Saleh Ziabari

    • Sandia National Laboratories
    • University of New Mexico

  • Andrew M Mounce

    • Sandia National Laboratories
    • Sandia National Laboratory

  • Dale L Huber

    • Sandia National Laboratory

  • Victor Acosta

    • University of New Mexico