Rapid, High-Resolution Magnetic Microscopy of Single Magnetic Microbeads

Julia M McCoey; Robert W de Gille; Babak Nasr; Jean-Philippe Tetienne; Liam T Hall; David A Simpson; Lloyd CL Hollenberg

Journal article

Rapid, High-Resolution Magnetic Microscopy of Single Magnetic Microbeads

Julia M McCoey, Robert W de Gille, Babak Nasr, Jean-Philippe Tetienne, Liam T Hall, David A Simpson, Lloyd CL Hollenberg

Small | Wiley | Published : 2019

DOI: 10.1002/smll.201805159

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Abstract

Magnetic microparticles or “beads” are used in a variety of research applications from cell sorting through to optical force traction microscopy. The magnetic properties of such particles can be tailored for specific applications with the uniformity of individual beads critical to their function. However, the majority of magnetic characterization techniques quantify the magnetic properties from large bead ensembles. Developing new magnetic imaging techniques to evaluate and visualize the magnetic fields from single beads will allow detailed insight into the magnetic uniformity, anisotropy, and alignment of magnetic domains. Here, diamond‐based magnetic microscopy is applied to image and char..

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University of Melbourne Researchers

Lloyd Hollenberg Author Physics

Liam Hall Author Chemistry

David Simpson Author Physics

Jean-Philippe Tetienne Author Physics

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Grants

Awarded by Australian Research Council (ARC)

Funding Acknowledgements

This work was supported by the Australian Research Council (ARC) through Grant Nos FL130100119, LP130100857, and DE170100129. This work was performed in part at the Materials Characterization and Fabrication Platform (MCFP) at the University of Melbourne and the Victorian Node of the Australian National Fabrication Facility (ANFF).