RF atomic magnetometer array with over 40 dB interference suppression using electron spin resonance

Cooper, Robert J.; Prescott, David W.; Lee, Garrett J.; Sauer, Karen L.

doi:10.1016/j.jmr.2018.08.007

Cited by 13 publications

(6 citation statements)

References 54 publications

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“…These values are close to the practical limit of detection of the proposed NQR-based readout technique for mm-scale tags as long as conventional room-temperature inductive detectors are used. Further improvements in sensitivity are possible by using either a cryogenically cooled detector coil, or alternative detectors such as SQUIDs 27 or atomic magnetometers 28 .…”

Section: Resultsmentioning

confidence: 99%

NQR sensitive embedded signatures for authenticating additively manufactured objects

Masna

Huan

Mandal

et al. 2021

Sci Rep

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Automatic recognition of unique characteristics of an object can provide a powerful solution to verify its authenticity and safety. It can mitigate the growth of one of the largest underground industries—that of counterfeit goods–flowing through the global supply chain. In this article, we propose the novel concept of material biometrics, in which the intrinsic chemical properties of structural materials are used to generate unique identifiers for authenticating individual products. For this purpose, the objects to be protected are modified via programmable additive manufacturing of built-in chemical “tags” that generate signatures depending on their chemical composition, quantity, and location. We report a material biometrics-enabled manufacturing flow in which plastic objects are protected using spatially-distributed tags that are optically invisible and difficult to clone. The resulting multi-bit signatures have high entropy and can be non-invasively detected for product authentication using $$^{35}$$ 35 Cl nuclear quadrupole resonance (NQR) spectroscopy.

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Section: Resultsmentioning

confidence: 99%

NQR sensitive embedded signatures for authenticating additively manufactured objects

Masna

Huan

Mandal

et al. 2021

Sci Rep

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“…Novel advances in the fields of microfabrication and optical interrogation have led to significant progress in optically pumped atomic magnetometers [121][122][123][124]. The operating mechanisms of such sensors are (i) coherent population trapping [125], (ii) non-linear magneto-optical rotation [126], and (iii) spin-exchange relaxation-free [34] regimes.…”

Section: Optically Pumped Atomic Magnetometersmentioning

confidence: 99%

Ultrasensitive Magnetic Field Sensors for Biomedical Applications

Murzin

Mapps

Levada

et al. 2020

Sensors

172

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The development of magnetic field sensors for biomedical applications primarily focuses on equivalent magnetic noise reduction or overall design improvement in order to make them smaller and cheaper while keeping the required values of a limit of detection. One of the cutting-edge topics today is the use of magnetic field sensors for applications such as magnetocardiography, magnetotomography, magnetomyography, magnetoneurography, or their application in point-of-care devices. This introductory review focuses on modern magnetic field sensors suitable for biomedicine applications from a physical point of view and provides an overview of recent studies in this field. Types of magnetic field sensors include direct current superconducting quantum interference devices, search coil, fluxgate, magnetoelectric, giant magneto-impedance, anisotropic/giant/tunneling magnetoresistance, optically pumped, cavity optomechanical, Hall effect, magnetoelastic, spin wave interferometry, and those based on the behavior of nitrogen-vacancy centers in the atomic lattice of diamond.

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“…The availability of a more accurate model is of relevance when the output of a magnetometer is used as an error-signal to implement feedback based field-stabilization systems [36][37][38][39][40], as well as when designing feed-forward ones [41] or when evaluating the effects of strong stray fields. The later is of particular relevance for systems operated in unshielded environment [9,42]. This paper is organised as follows.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of a Light-Modulated Magnetometer to Time Dependent Field

Bevilacqua¹,

Biancalana²,

Dancheva³

2023

Preprint

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The dynamic response of a Bell-and-Bloom magnetometer to a parallel (to the bias field) time-dependent field is modelled beyond the commonly assumed quasi-static regime. The results unveil features that are related to the parametric nature of the considered system. It is shown that a for low-amplitude time-dependent field different operating conditions are possible and that, beside the commonly reported low-pass-filter behaviour, a band-pass response emerges. Moreover, we numerically show that for larger field amplitude the system, due to its parametric nature, has a kind of ``non-linear'' response.

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RF atomic magnetometer array with over 40 dB interference suppression using electron spin resonance

Cited by 13 publications

References 54 publications

NQR sensitive embedded signatures for authenticating additively manufactured objects

NQR sensitive embedded signatures for authenticating additively manufactured objects

Ultrasensitive Magnetic Field Sensors for Biomedical Applications

Dynamic Response of a Light-Modulated Magnetometer to Time Dependent Field

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RF atomic magnetometer array with over 40 dB interference suppression using electron spin resonance

Cited by 13 publications

References 54 publications

NQR sensitive embedded signatures for authenticating additively manufactured objects

NQR sensitive embedded signatures for authenticating additively manufactured objects

Ultrasensitive Magnetic Field Sensors for Biomedical Applications

Dynamic Response of a Light-Modulated Magnetometer to Time Dependent Field

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Product

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RF atomic magnetometer array with over 40 dB interference suppression using electron spin resonance