Results 141 to 150 of about 195,278 (309)

A Magnetic Resonance Measurement Technique for Rapidly Switched Gradient Magnetic Fields in a Magnetic Resonance Tomograph

Acta Polytechnica, 2003
This paper describes a method for measuring of the gradient magnetic field in Nuclear Magnetic Resonance (NMR) tomography, which is one of the modern medical diagnostic methods.
K. Bartušek, E. Gescheidtová
doaj  

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Wide-field Fourier magnetic imaging with electron spins in diamond

npj Quantum Information
Wide-field magnetic imaging based on nitrogen-vacancy (NV) centers in diamond has been shown the applicability in material and biological science. However, the spatial resolution is limited by the optical diffraction limit (>200 nm) due to the optical ...
Zhongzhi Guo, You Huang, Mingcheng Cai, Chunxing Li, Mengze Shen, Mengqi Wang, Pei Yu, Ya Wang, Fazhan Shi, Pengfei Wang, Jiangfeng Du   +10 more
doaj   +1 more source

MXene Wrapped Magnetic Mesocrystals for Durable Redox Catalytic Cancer Therapy and Responsive MRI

Advanced Functional Materials, EarlyView.
Conformal wrapping of ultrathin Ti3C2Tx MXene nanosheets on Fe3O4 mesocrystals creates topology‐stabilized Schottky junctions that direct photoinduced electron transfer under NIR irradiation. The unique architecture sustains Fenton catalysis, promotes continuous hydroxyl radical production, and provides photo‐responsive MRI contrast.
Min Jun Ko, Seongchan Kim, Jun‐Hyeok Han, Sanghee Lee, Minji Ahn, Hong En Fu, Young Jun Jang, Yoo Sang Jeon, Weiguo Li, Young Keun Kim, Dong‐Hyun Kim   +10 more
wiley   +1 more source

MEMS cantilever based magnetic field gradient sensor

, 2017
This paper describes major contributions to a MEMS magnetic field gradient sensor. An H-shaped structure supported by four arms with two circuit paths on the surface is designed for measuring two components of the magnetic flux density and one component ...
Christoph Rosenberg, Dabsch, Alexander, Franz Keplinger, Keplinger, Franz, Michael Stifter, Stifter, Michael, Alexander Dabsch, Rosenberg, Christoph   +7 more
core   +1 more source

Design of dual-layer heater based on genetic algorithm to optimize magnetic field gradient in vapor cell

e-Prime: Advances in Electrical Engineering, Electronics and Energy
Addressing the constraint of magnetic field gradients in the vapor cell on enhancing the sensitivity of atomic magnetometers, this paper proposed a dual-layer heater design based on genetic algorithms, effectively reduced the magnetic field gradients ...
Zhicheng Tan, Jing Zhu, Yanyan Liu, Siyang Lu, Lianqing Zhu   +4 more
doaj   +1 more source

Vorticity‐Driven µ‐Platelet Rotation and Selective Packing for Vertical Thermal–Electrical Interconnects

Advanced Functional Materials, EarlyView.
We introduce a capillary‐filtering‐based particle‐filling (CFPF) process that simultaneously forms vertical thermal pathways and electrical vias within µ‐pores. In situ microfluidic analysis reveals that capillary‐driven velocity gradients generate vorticity that governs µ‐platelet rotation and vertical alignment.
Yujin Mun, Sang Gil Lee, Un‐seong Baik, Taeyoon Kwon, Jungyeon Kim, Joo Hwan Shin, Chanho Jeong, Jae‐seung Shim, Yeji Kim, Hyein Jung, Jin‐Tae Kim, Tae‐il Kim   +11 more
wiley   +1 more source

Magnon Quantization in the Magnetic Field Qradient

, 2021
The article is devoted to the study of quantization of magnons in yttrium iron garnet film in the magnetic field gradient. Detected energy levels correspond to the quantization of particles in triangular potential. These energy levels are not equidistant.
Bunkov Y.M., Safin T.R., Dunichev K.Y., Tagirov M.S.   +3 more
core  

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source