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We demonstrate the possibility of dynamic imaging of magnetic fields using electromagnetically induced transparency in an atomic gas. As an experimental demonstration we employ an atomic Rb gas confined in a glass cell to image the…

量子物理 · 物理学 2010-09-29 Eugeniy E. Mikhailov , I. Novikova , M. D. Havey , F. A. Narducci

Absolute negative refraction regions for both polarizations of electromagnetic wave in two-dimensional photonic crystal have been found through both the analysis and the exact numerical simulation. Especially, absolute all-angle negative…

材料科学 · 物理学 2009-11-10 Xiangdong Zhang

Topological textures in magnetically ordered materials are important case studies for fundamental research with promising applications in data science. They can also serve as photonic elements to mold electromagnetic fields endowing them…

其他凝聚态物理 · 物理学 2025-12-19 Vakhtang Jandieri , Ramaz Khomeriki , Daniel Erni , Nicolas Tsagareli , Qian Li , Douglas H. Werner , Jamal Berakdar

In this work a mu=-1 metamaterial (MM) lens for magnetic resonance imaging (MRI) is demonstrated. MRI uses surface coils to detect the radiofrequency(RF) energy absorbed and emitted by the nuclear spins in the imaged object. The proposed MM…

医学物理 · 物理学 2009-11-13 Manuel J. Freire , Ricardo Marques , Lukas Jelinek

In this paper, we provide assembly instructions for an easy to build experimental setup in order to gain practical experience with tomography. In view of this, this paper can be seen as a complementary work to excellent mathematical…

图像与视频处理 · 电气工程与系统科学 2024-02-23 Axel Kittenberger , Leonidas Mindrinos , Otmar Scherzer

Methods for characterisation of 3D magnetic spin structures are necessary to advance the performance of 3D magnetic nanoscale technologies. However, as the component dimensions approach the nanometre range, it becomes more challenging to…

介观与纳米尺度物理 · 物理学 2025-06-24 Aurys Silinga , András Kovács , Stephen McVitie , Rafal E. Dunin-Borkowski , Kayla Fallon , Trevor P. Almeida

Magnetic Resonance Imaging (MRI) is highly susceptible to motion artifacts due to the extended acquisition times required for k-space sampling. These artifacts can compromise diagnostic utility, particularly for dynamic imaging. We propose…

图像与视频处理 · 电气工程与系统科学 2025-07-04 Frederic Wang , Jonathan I. Tamir

Dielectric tensor tomography is an imaging technique for mapping three-dimensional distributions of dielectric properties in transparent materials. This work introduces an enhanced illumination strategy employing a micro-electromechanical…

Widefield magnetic imaging using ensembles of nitrogen-vacancy (NV) centres in diamond has emerged as a useful technique for studying the microscopic magnetic properties of materials. Thus far, this technique has mainly been implemented on…

X-ray computed tomography is a powerful tool for volumetric imaging, where three-dimensional (3D) images are generated from a large number of individual X-ray projection images. Collecting the required number of low noise projection images…

图像与视频处理 · 电气工程与系统科学 2025-04-30 Zhenduo Shang , Thomas Blumensath

Recent advancements in 2D materials have revealed the potential of van der Waals magnets, and specifically of their magnetic anisotropy that allows applications down to the 2D limit. Among these materials, CrSBr has emerged as a promising…

Magnetic force microscopy and scanning tunneling microscopy data could be used to test computer numerical models of magnetism. The elaborated numerical model of a face-centered lattice Ising spins is based on pixel distribution in the image…

计算物理 · 物理学 2015-12-07 Vitalii Kapitan , Alexey Peretyatko , Konstantin Nefedev

Scanning superconducting quantum interference device microscopy (SSM) is a scanning probe technique that images local magnetic flux, which allows for mapping of magnetic fields with high field and spatial accuracy. Many studies involving…

仪器与探测器 · 物理学 2018-01-17 P. Reith , X. Renshaw Wang , H. Hilgenkamp

Some of the most sensitive methods of measuring magnetic fields utilize interactions of resonant light with atomic vapor. Recent developments in this vibrant field are improving magnetometers in many traditional areas such as measurement of…

原子物理 · 物理学 2015-06-26 D. Budker , M. V. Romalis

Ferromagnetic resonance has been used to study the magnetic properties and magnetization dynamics of polycrystalline Fe$_{1-x}$V$_{x}$ alloy films with $0\leq x < 0.7$. Films were produced by co-sputtering from separate Fe and V targets,…

介观与纳米尺度物理 · 物理学 2009-11-13 J-M. L. Beaujour , A. D. Kent , J. Z. Sun

We report the development of a hybrid numerical / analytical model capable of mapping the spatially-varying distributions of the local ferromagnetic resonance (FMR) frequency and dynamic magnetic susceptibility in a wide class of patterned…

介观与纳米尺度物理 · 物理学 2019-05-29 C. S. Davies , V. D. Poimanov , V. V. Kruglyak

The ability to experimentally map the three-dimensional structure and dynamics in bulk and patterned three-dimensional ferromagnets is essential both for understanding fundamental micromagnetic processes, as well as for investigating…

Magnetic resonance imaging and spectroscopy rely on the magnetic fields generated by radiofrequency volume coils to acquire high-quality data. Consequently, a comprehensive understanding of electromagnetic field behavior in RF volume coils…

医学物理 · 物理学 2025-01-24 A. Villareal , J. Lazovic , S. E. Solis-Najera , R. Martin , R. Ruiz , L. Medina , A. O. Rodriguez

Magnetic Resonance Imaging (MRI) is a crucial medical imaging technology for the screening and diagnosis of frequently occurring cancers. However image quality may suffer by long acquisition times for MRIs due to patient motion, as well as…

计算机视觉与模式识别 · 计算机科学 2015-12-29 Edward Li , Farzad Khalvati , Mohammad Javad Shafiee , Masoom A. Haider , Alexander Wong

Non-destructive eddy current testing of defects in metal plates using the magnetic resonance signal of a radio-frequency atomic magnetometer is demonstrated. The shape and amplitude of the spatial profile of signal features that correspond…

应用物理 · 物理学 2018-11-06 P. Bevington , R. Gartman , W. Chalupczak
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