Zero-field remote detection of NMR with a microfabricated atomic magnetometer
Micah P. Ledbetter,Igor Savukov,Dmitry Budker,Vishal Shah,Svenja Knappe,John Kitching,D. J. Michalak,Shoujun Xu,Alexander Pines +8 more
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TLDR
Remote detection of nuclear magnetic resonance (NMR) with a microchip sensor consisting of a microfluidic channel and a microfabricated vapor cell is demonstrated, which allows operation of the magnetometer in the spin-exchange relaxation-free (SERF) regime and increases the proximity of sensor and sample by eliminating the need for a solenoid to create a leading field.Abstract:
We demonstrate remote detection of nuclear magnetic resonance (NMR) with a microchip sensor consisting of a microfluidic channel and a microfabricated vapor cell (the heart of an atomic magnetometer). Detection occurs at zero magnetic field, which allows operation of the magnetometer in the spin-exchange relaxation-free (SERF) regime and increases the proximity of sensor and sample by eliminating the need for a solenoid to create a leading field. We achieve pulsed NMR linewidths of 26 Hz, limited, we believe, by the residence time and flow dispersion in the encoding region. In a fully optimized system, we estimate that for 1 s of integration, 7 × 1013 protons in a volume of 1 mm3, prepolarized in a 10-kG field, can be detected with a signal-to-noise ratio of ≈3. This level of sensitivity is competitive with that demonstrated by microcoils in 100-kG magnetic fields, without requiring superconducting magnets.read more
Citations
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Nuclear magnetic resonance spectroscopy on a (5-nanometer)3 sample volume.
T. Staudacher,T. Staudacher,Fazhan Shi,S. Pezzagna,Jan Meijer,Jiangfeng Du,Carlos A. Meriles,Friedemann Reinhard,Jörg Wrachtrup +8 more
TL;DR: Application of nuclear magnetic resonance (NMR) spectroscopy to nanoscale samples has remained an elusive goal, achieved only with great experimental effort at subkelvin temperatures.
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Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer
TL;DR: In this paper, an ultra-sensitive atomic magnetometer using optically-pumped potassium atoms operating in spin exchange relaxation free (SERF) regime was described, achieving a magnetic field sensitivity of 160 aT/Hz$ 1/2}$ in a gradiometer arrangement with a measurement volume of 0.45 cm$^3$ and energy resolution per unit time of $44 hbar.
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Ultrahigh sensitivity magnetic field and magnetization measurements with an atomic magnetometer
TL;DR: In this article, the authors describe an ultra-sensitive atomic magnetometer based on optically pumped potassium atoms operating in a spin exchange relaxation free regime, and demonstrate magnetic field sensitivity of 160 εaT/Hz1/2 in a gradiometer arrangement with a measurement volume of 0.45 cm3 and energy resolution per unit bandwidth of 44ℏ.
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High sensitivity magnetic imaging using an array of spins in diamond.
S. Steinert,Florian Dolde,Philipp Neumann,A. Aird,Boris Naydenov,Gopalakrishnan Balasubramanian,Fedor Jelezko,Jörg Wrachtrup +7 more
TL;DR: The presented wide-field NV magnetometer offers, in addition to its high magnetic sensitivity and vector reconstruction, an unprecedented spatiotemporal resolution and functionality at room temperature.
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Chip-scale atomic devices
TL;DR: In this article, the design, fabrication, and performance of chip-scale atomic clocks, magnetometers, and gyroscopes are discussed and many applications in which these novel instruments are being used.
References
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Journal ArticleDOI
Optical magnetometry - eScholarship
Dmitry Budker,Michael Romalis +1 more
TL;DR: In this article, the basic principles of modern optical magnetometers, discuss fundamental limitations on their performance, and describe recently explored applications for dynamical measurements of biomagnetic fields, detecting signals in NMR and MRI, inertial rotation sensing, magnetic microscopy with cold atoms, and tests of fundamental symmetries of nature.
Journal ArticleDOI
A subfemtotesla multichannel atomic magnetometer
TL;DR: A new spin-exchange relaxation-free (SERF) atomic magnetometer is described, and theoretical analysis shows that fundamental sensitivity limits of this device are below 0.01 fT Hz-1/2, which would enable new applications, including the possibility of mapping non-invasively the cortical modules in the brain.
Journal ArticleDOI
High-Resolution Microcoil 1H-NMR for Mass-Limited, Nanoliter-Volume Samples
TL;DR: In this paper, high-resolution, proton nuclear magnetic resonance (NMR) spectra of 5-nanoliter samples were obtained with much higher mass sensitivity [signal-to-noise ratio (S/N) per micromole] than with traditional methods.
Journal ArticleDOI
Chip-scale atomic magnetometer
Peter D. D. Schwindt,Svenja Knappe,Vishal Shah,Leo W. Hollberg,John Kitching,Li-Anne Liew,John M. Moreland +6 more
TL;DR: In this paper, a small low-power magnetic sensor based on alkali atoms was constructed, which uses a coherent population trapping resonance to probe the interaction of the atoms' magnetic moment with a magnetic field, and detects changes in the magnetic flux density with a sensitivity of 50pTHz−1∕2 at 10Hz.
Journal ArticleDOI
Subpicotesla atomic magnetometry with a microfabricated vapour cell
TL;DR: In this article, an atomic magnetometer based on a millimetre-scale microfabricated alkali vapour cell with sensitivity below 70 fT −1/2 was presented.