Mercoledì, 5 Giugno, 2019 - 11:00
Seminario del Dr. Luca Marmugi
Mercoledì 5 Giugno 2019
Ore 11:00 - FISICA, Aula 5
DSFTA Università di Siena
Dr. Luca Marmugi
Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
terrà un seminario dal titolo:
"Biomedical Imaging with Atomic Magnetometers: Progress and perspectives"
Abstract
Building on recent demonstrations [1], electromagnetic induction imaging with atomic magnetometers has paved the path to a novel approach to biomedical imaging, with the promise of non-invasive and safe in vivo mapping of organs’ and tissues’ dielectric properties. This technique is expected to have a tremendous impact in research and clinical practice when electric conductivity plays – or is predicted to play – a relevant role [2]. Today, this field, actively investigated by various groups worldwide, is at the edge of a major breakthrough: the requirements for imaging biological tissues are met [3], and the first biomedical images appear to be close to realisation.
In this talk, the most recent progress in imaging with atomic magnetometers will be reviewed. The enabling features for biomedical imaging will be treated in detail. Sensitivity of the atomic magnetometers, extension to low-conductivity range, phase and imaging stability, sensitivity to spatial features and resolution, operational configurations, as well as perspectives for full 3D mapping and image reconstruction will be discussed [3-8].
[1] C. Deans, L. Marmugi, S. Hussain, F. Renzoni, Electromagnetic induction imaging with a radio-frequency atomic magnetometer, Appl. Phys. Lett. 108, 10, 103503 (2016)
[2] L. Marmugi, F. Renzoni, Optical Magnetic Induction Tomography of the Heart, Sci. Rep. 6, 23962 (2016)
[3] L. Marmugi, C. Deans, F. Renzoni, Atomic Magnetometry-Based Electromagnetic Imaging of Low-conductivity Semiconductors, arXiv:1805.05743
[4] C. Deans, L. Marmugi, F. Renzoni, Sub-picotesla widely tunable atomic magnetometer operating at room-temperature in unshielded environments, Rev. Sci. Instr. 89, 8, 083111 (2018)
[5] P. Bevington, R. Gartman, W. Chalupczak, C. Deans, L. Marmugi, F. Renzoni, Non-destructive structural imaging of steelwork with atomic magnetometers, Appl. Phys. Lett. 113, 6, 063503 (2018)
[6] Y. Cohen, K. Jadeja, S. Sula, M. Venturelli, C. Deans, L. Marmugi, F. Renzoni, A cold atom radio-frequency magnetometer, Appl. Phys. Lett. 114, 073505 (2019)
[7] C. Deans, L. Marmugi, F. Renzoni, Active Underwater Detection with an Array of Atomic Magnetometers, Appl. Opt. 57, 10, 2346-2351 (2018)
[8] C. Deans, L. D. Griffin, L. Marmugi, F. Renzoni, Machine learning based localization and classification with atomic magnetometers, Phys. Rev. Lett. 120, 033204 (2018)
