Imaging the Vector Magnetic Field of Magnetospirillum Gryphiswaldense by Optically Detected Magnetic Resonance using Nitrogen-Vacancy Centers in Diamond

ORAL

Abstract

Nitrogen vacancy centers in diamond are single-spin systems that are stable under ambient conditions with strong optical spin transitions, making them optimal for room-temperature detection of nanoscale magnetic fields using optically detected magnetic resonance (ODMR). We use these ensembles of diamond spins as a scanned probe magnetometer to map the field emitted by Magnetospirillum Gryphiswaldense, in vivo. These bacteria mineralize nanoscale magnetite particles in their internal vesicles. Imaging these living bacteria cells will serve as a strong foundation for the application of our ODMR technique to the medical field, where the bacteria can be used to synthesize functionalized magnetic particles which can be used as biomarkers and targeted drug-delivery systems.

*Funding Provided by the Center for Emergent Materials at the Ohio State University, an NSF MRSEC (Award Number DMR-0820414)

–

Authors

  • Richelle M. Teeling

    • The Ohio State University

  • Young Woo Jung

    • The Ohio State University

  • Inhee Lee

    • The Ohio State University

  • Justin North

    • The Ohio State University

  • Robin Nakkula

    • The Ohio State University

  • Rohan Adur

    • The Ohio State University

  • Ezekiel Johnston-Halperin

    • Ohio State University
    • Department of Physics and Center for Emergent Materials, The Ohio State University, Columbus, OH
    • The Ohio State University

  • Michael G. Poirier

    • The Ohio State University
    • Ohio State University

  • Chris Hammel

    • Department of Physics, The Ohio State University
    • The Ohio State University
    • Ohio State University