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The mechanism of magnetization reversal in single-domain ferromagnetic particles is of interest in many applications, in most of which losses must be minimized. In cancer therapy by hyperthermia the opposite requirement prevails: the…

其他凝聚态物理 · 物理学 2009-11-13 P. F. de Chatel , I. Nandori , J. Hakl , S. Meszaros , K. Vad

Safety assessment of patients with one-dimensionally structured passive implants, like cranial meshes or stents, exposed to low or medium frequency magnetic fields, like those generated in magnetic resonance imaging or magnetic…

计算工程、金融与科学 · 计算机科学 2025-08-14 Alessandro Arduino , Oriano Bottauscio , Denise Grappein , Stefano Scialó , Fabio Vicini , Umberto Zanovello , Luca Zilberti

The generation of localized magnetic field gradients by on-chip nanomagnets is important for a variety of technological applications, in particular for spin qubits. To advance beyond the empirical design of these nanomagnets, we propose a…

介观与纳米尺度物理 · 物理学 2024-04-10 William Legrand , Sandrine Lopes , Quentin Schaeverbeke , François Montaigne , Matthieu M. Desjardins

Magnetic and NMR relaxivity properties of {\gamma}-Fe2O3 nanoparticles embedded into the walls of polyelectrolyte multilayer capsules and freely dispersed in a sodium borate buffer solution have been investigated. The different geometric…

Selective hysteretic heating of multiple collocated sets of single domain magnetic nanoparticles (SDMNPs) by alternating magnetic fields (AMFs) may offer a useful tool for biomedical applications. The possibility of magnetothermal…

医学物理 · 物理学 2015-06-19 Michael G. Christiansen , Ritchie Chen , Polina Anikeeva

Magnetic nanoflowers are densely packed aggregates of superferromagnetically coupled iron oxide nanocrystallites, which excel during magnetic hyperthermia experiments. Here, we investigate the nature of the moment coupling within a powder…

介观与纳米尺度物理 · 物理学 2019-10-02 Philipp Bender , Dirk Honecker , Luis Fernández Barquín

The heating of particles by plasma radiation plays a critical role in space science involving dusty plasma as well as in industrial processes such as plasma vapor deposition, microchip production, etching and plasma fusion. Numerical…

等离子体物理 · 物理学 2025-09-09 A. Povitsky , M. N. Shneider

Nuclear spin hyperpolarization provides a promising route to overcome the challenges imposed by the limited sensitivity of nuclear magnetic resonance. Here we demonstrate that dissolution of spin-polarized pentacene-doped naphthalene…

Wearable biosensors increasingly require continuous and battery-free power sources, but conventional skin-mounted thermoelectric generators are limited by the small temperature differences available in real environments. This work…

计算工程、金融与科学 · 计算机科学 2025-12-10 Hamidreza Moradi , Melika Filvantorkaman

Quantum systems can provide outstanding performance in various sensing applications, ranging from bioscience to nanotechnology. Atomic-scale defects in silicon carbide are very attractive in this respect because of the technological…

材料科学 · 物理学 2014-07-29 H. Kraus , V. A. Soltamov , F. Fuchs , D. Simin , A. Sperlich , P. G. Baranov , G. V. Astakhov , V. Dyakonov

Magnetic nanoparticles are promising systems for biomedical applications and in particular for Magnetic Fluid Hyperthermia, a promising therapy that utilizes the heat released by such systems to damage tumor cells. We present an…

The aim of this study was to evaluate and compare temperature distributions for different tissues being treated at the time of interstitial microwave hyperthermia. A coaxial-slot antenna implemented into the tissue is the source of…

医学物理 · 物理学 2017-10-31 Piotr Gas

Magnetic nanoparticles (MNPs) have been extensively used in drug/gene delivery, hyperthermia therapy, magnetic particle imaging (MPI), magnetic resonance imaging (MRI), magnetic bioassays, etc. With proper surface chemical modifications,…

应用物理 · 物理学 2019-10-16 Kai Wu , Jinming Liu , Renata Saha , Bin Ma , Diqing Su , Chaoyi Peng , Jiajia Sun , Jian-Ping Wang

We investigate the emergence of self-hybridized thermal magnetoplasmons in doped graphene nanodisks at finite temperatures when subjected to an external magnetic field. Using a semianalytical approach, which fully describes the eigenmodes…

介观与纳米尺度物理 · 物理学 2024-12-31 Mikkel Have Eriksen , Juan R. Deop-Ruano , Joel D. Cox , Alejandro Manjavacas

To achieve high efficiency and good performance of spintronic terahertz sources, we propose and corroborate a remnant magnetization method to radiate continuously and stably terahertz pulses from W/CoFeB/Pt magnetic nanofilms without…

The excitation of plasmonic nanoparticles by incident electromagnetic waves at frequencies near their subwavelength resonances induces localized heat generation in the surrounding medium. We develop a mathematical framework to rigorously…

偏微分方程分析 · 数学 2024-12-03 Xinlin Cao , Arpan Mukherjee , Mourad Sini

We present results of micromagnetic simulations of thin ferromagnetic nano hemispheroidal shells with sizes ranging from 1 to 50 nm (inside dimensions). Depending on the geometrical and magnetic parameters of the hemispheroidal shell, there…

介观与纳米尺度物理 · 物理学 2017-08-23 Keren Schultz , Moty Schultz

This chapter provides an introduction to the fundamental physical ideas and models relevant to the phenomenon of magnetic hysteresis in nanoparticle assemblies. The concepts of single-domain particles and superparamagnetism are discussed.…

介观与纳米尺度物理 · 物理学 2010-04-15 D. Kechrakos

We extend a renormalization group-based course-graining method for micromagnetic simulations to include properly scaled magnetostatic interactions. We apply the method in simulations of dynamic hysteresis loops at clinically relevant sweep…

介观与纳米尺度物理 · 物理学 2021-05-26 Razyeh Behbahani , Martin L. Plumer , Ivan Saika-Voivod

Temperature sensors with micro- and nanoscale spatial resolution have long been explored for their potential to investigate the details of physical systems at an unprecedented scale. In particular, the rapid miniaturization of transistor…