Article
Physics, Applied
Chen Zhang, Farida Shagieva, Matthias Widmann, Michael Kuebler, Vadim Vorobyov, Polina Kapitanova, Elizaveta Nenasheva, Ruth Corkill, Oliver Rhrle, Kazuo Nakamura, Hitoshi Sumiya, Shinobu Onoda, Junichi Isoya, Joerg Wrachtrup
Summary: Nitrogen-vacancy (N-V) centers in diamond have been utilized in high-sensitivity magnetic field measurements, optimized with low-intensity optical excitation. The magnetometer achieves picotesla sensitivity in unshielded environments, showing potential for wide-bandwidth magnetometry applications.
PHYSICAL REVIEW APPLIED
(2021)
Article
Physics, Multidisciplinary
Anne Fabricant, Irina Novikova, Georg Bison
Summary: This article serves as a step-by-step guide for optically pumped magnetometers using alkali atomic vapor cells. It provides an introduction to atomic magneto-optical response and magnetometer performance merits, and discusses the impact of main sources of noise. It also compares different magnetometer implementations and offers a practical design process and analysis using real magnetometer data.
NEW JOURNAL OF PHYSICS
(2023)
Article
Environmental Sciences
Sergio Fernandez Romero, Pablo Morata Barrado, Miguel Angel Rivero Rodriguez, Gustavo Adolfo Vazquez Yanez, Eduardo De Diego Custodio, Marina Diaz Michelena
Summary: Geomagnetic prospection is an effective method for analyzing the distribution of magnetic minerals underground, and recent developments have seen the use of vector magnetometry in drones for more accurate measurements. This manuscript describes the design, development, and implementation of a vector magnetometry system on a drone that follows the elevation of the terrain, improving interpretation capabilities.
Article
Multidisciplinary Sciences
Moeta Tsukamoto, Shuji Ito, Kensuke Ogawa, Yuto Ashida, Kento Sasaki, Kensuke Kobayashi
Summary: Nanodiamonds combined with machine learning can accurately measure magnetic fields without the need for physical models. This method enhances the performance of nanodiamonds and allows for visualization of nano-magnetism and mesoscopic current, expanding their applicability in various materials.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
A. Harres, W. J. S. Garcia, T. R. Salles, F. S. Bruckmann, J. B. Sulzenco, A. D. Schneider, C. R. B. Rhoden
Summary: This study investigates the magnetic properties of graphene oxide decorated with magnetite nanoparticles (GO•Fe3O4) at room temperature. The size distribution of the magnetic nanoparticles plays a significant role in the magnetic behavior, with smaller particles exhibiting superparamagnetic behavior and larger particles exhibiting ferrimagnetic behavior. The magnetic parameters, such as coercivity and remanent magnetisation, are mainly influenced by the average particle size rather than demagnetising interactions.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Balram Singh, Jorge A. Otalora, Tong H. Kang, Ivan Soldatov, Dmitriy D. Karnaushenko, Christian Becker, Rudolf Schaefer, Daniil Karnaushenko, Volker Neu, Oliver G. Schmidt
Summary: The extension of 2D ferromagnetic structures into 3D curved geometry allows for tuning of their magnetic properties. In this article, the authors demonstrate a self-assembly rolling technique using a polymeric platform to achieve homogeneous and controlled bending of functional layers, which can be used to tailor surface strain of micron-sized devices.
NPJ FLEXIBLE ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Paul Burger, Gyanendra Singh, Christer Johansson, Carlos Moya, Gilles Bruylants, Gerhard Jakob, Alexei Kalaboukhov
Summary: Magnetic nanoparticles (MNPs) are important for fabrication of tailored nanomagnetic structures. In this study, precise and controllable manipulation of individual magnetite MNPs using atomic force microscope was demonstrated. Placing MNPs on a two-dimensional electron gas and observing hysteresis loop verified the approach. Additionally, the effective coercivity of the hysteresis loop could be changed by altering the cooling field angle, which is related to the alignment of magnetic moment along the easy axis in magnetite.
Article
Physics, Multidisciplinary
Rui Zhang, Dimitra Kanta, Arne Wickenbrock, Hong Guo, Dmitry Budker
Summary: We present an alignment-based 87Rb magnetometer that overcomes the issue of nonlinear Zeeman splitting in alkali-metal atomic magnetometry. The magnetometer exhibits immunity to NLZ-related errors due to a single magnetic resonance peak and well-separated hyperfine transition frequencies. Experimental results show that the magnetometer can be used for practical measurements in geomagnetic environments, achieving a photon-shot-noise-limited sensitivity of 9 fT/pat 5 mu T and remaining stable at tens of fT/ ffiffiffiffiffiffiffiffiffiffiHz p at Hz 50 mu T at room temperature.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ludwik Kranz, Samuel K. Gorman, Brandur Thorgrimsson, Serajum Monir, Yu He, Daniel Keith, Keshavi Charde, Joris G. Keizer, Rajib Rahman, Michelle Y. Simmons
Summary: This study investigates the use of exchange-based operation between donor bound electron spins to probe the local magnetic fields experienced by the qubits with precise measurement at the atomic scale, which can be used to engineer hyperfine fields in multi-donor qubits for high-fidelity two-qubit gates.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Sylwia Fiejdasz, Adriana Gilarska, Tomasz Straczek, Maria Nowakowska, Czeslaw Kapusta
Summary: In this study, hybrid materials based on natural polymers containing SPIONs were prepared and characterized for their magnetic properties. It was found that immobilizing SPIONs while preserving their superparamagnetic character resulted in promising hybrids with potential applications.
Article
Physics, Applied
James L. Webb, Luca Troise, Nikolaj W. Hansen, Louise F. Frellsen, Christian Osterkamp, Fedor Jelezko, Steffen Jankuhn, Jan Meijer, Kirstine Berg-Sorensen, Jean-Francois Perrier, Alexander Huck, Ulrik Lund Andersen
Summary: This study demonstrates a method utilizing point defects in solid-state materials to achieve high-resolution measurement of signals in microscopic circuits, enabling simultaneous spatial and temporal recovery.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Analytical
Rach Dawson, Carolyn O'Dwyer, Edward Irwin, Marcin S. S. Mrozowski, Dominic Hunter, Stuart Ingleby, Erling Riis, Paul F. F. Griffin
Summary: Machine learning is an effective tool for optimizing complex systems with multiple parameters, providing a more efficient alternative to manual methods. In this study, automated machine learning strategies were applied to optimize the sensitivity of a single-beam Cs SERF OPM, resulting in a significant improvement in performance.
Review
Polymer Science
Azeez Yusuf, Awatif Rashed Z. Almotairy, Hanan Henidi, Ohoud Y. Alshehri, Mohammed S. Aldughaim
Summary: Nanotechnology has experienced rapid development in the past four decades and has revolutionized various aspects of everyday life. It has had significant impacts on fields like medicine and food industry, leading to improvements in shelf life of food, drug delivery, and development of specific therapeutics.
Article
Nanoscience & Nanotechnology
Yoel Sebbag, Alex Naiman, Eliran Talker, Yefim Barash, Uriel Levy
Summary: This study developed an integrated magnetic sensing platform based on a nanophotonic-chip interfaced to a microfabricated alkali vapor cell, successfully measuring the magnetically induced circular dichroism in rubidium vapor. The presented approach opens up new possibilities for further integration of highly sensitive magnetometers, with a wide range of potential future applications.
Article
Chemistry, Multidisciplinary
Franz Wegner, Kerstin Luedtke-Buzug, Sjef Cremers, Thomas Friedrich, Malte M. Sieren, Julian Haegele, Martin A. Koch, Emine U. Saritas, Paul Borm, Thorsten M. Buzug, Joerg Barkhausen, Mandy Ahlborg
Summary: The purpose of this study was to develop instrument markers that are visible in both MPI and MRI. Coatings containing different types of magnetic nanoparticles were fabricated, and their MPI performance was evaluated using MPS. These coatings were then applied on a nonmetallic guidewire for imaging experiments. MPI image reconstruction was performed using system matrices measured with different coatings. The bimodal markers were clearly visible in both MRI and MPI, but the signal voids and areas of high signal intensity were larger than the real marker size. Insufficient MPI signal was observed when using a specific coating.
