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Webb, James L. [VerfasserIn]; Troise, Luca [VerfasserIn]; Hansen, Nikolaj W. [VerfasserIn]; Achard, Jocelyn [VerfasserIn]; Brinza, Ovidiu [VerfasserIn]; Staacke, Robert [VerfasserIn]; Kieschnick, Michael [VerfasserIn]; Meijer, Jan [VerfasserIn]; Perrier, Jean-Francois [VerfasserIn]; Berg-Sørensen, Kirstine [VerfasserIn]; Huck, Alexander [VerfasserIn]; Andersen, Ulrik Lund [VerfasserIn]

Optimization of a Diamond Nitrogen Vacancy Centre Magnetometer for Sensing of Biological Signals

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  • Medientyp: E-Artikel
  • Titel: Optimization of a Diamond Nitrogen Vacancy Centre Magnetometer for Sensing of Biological Signals
  • Beteiligte: Webb, James L. [VerfasserIn]; Troise, Luca [VerfasserIn]; Hansen, Nikolaj W. [VerfasserIn]; Achard, Jocelyn [VerfasserIn]; Brinza, Ovidiu [VerfasserIn]; Staacke, Robert [VerfasserIn]; Kieschnick, Michael [VerfasserIn]; Meijer, Jan [VerfasserIn]; Perrier, Jean-Francois [VerfasserIn]; Berg-Sørensen, Kirstine [VerfasserIn]; Huck, Alexander [VerfasserIn]; Andersen, Ulrik Lund [VerfasserIn]
  • Erschienen: Lausanne: Frontiers Research Foundation, [2023]
  • Erschienen in: Frontiers in physics ; 8, (2020)
  • Sprache: Englisch
  • Schlagwörter: diamond ; magnetic field ; sensing ; biosensing and bioimaging ; NV center in diamond
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: Sensing of signals from biological processes, such as action potential propagationin nerves, are essential for clinical diagnosis and basic understanding of physiology.Sensing can be performed electrically by placing sensor probes near or inside aliving specimen or dissected tissue using well-established electrophysiology techniques.However, these electrical probe techniques have poor spatial resolution and cannot easilyaccess tissue deep within a living subject, in particular within the brain. An alternativeapproach is to detect the magnetic field induced by the passage of the electrical signal,giving the equivalent readout without direct electrical contact. Such measurements areperformed today using bulky and expensive superconducting sensors with poor spatialresolution. An alternative is to use nitrogen vacancy (NV) centers in diamond that promisebiocompatibilty and high sensitivity without cryogenic cooling. In this work we presentadvances in biomagnetometry using NV centers, demonstrating magnetic field sensitivityof ∼100 pT/√Hz in the DC/low frequency range using a setup designed for biologicalmeasurements. Biocompatibility of the setup with a living sample (mouse brain slice)is studied and optimized, and we show work toward sensitivity improvements using apulsed magnetometry scheme. In addition to the bulk magnetometry study, systematicartifacts in NV-ensemble widefield fluorescence imaging are investigated.
  • Zugangsstatus: Freier Zugang
  • Rechte-/Nutzungshinweise: Namensnennung (CC BY)