Results 161 to 170 of about 113,850 (277)

Coaxial Dipole Array With Switching Transmit Sensitivities for Ultrahigh Field MRI

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 6, Page 3608-3615, June 2026.
ABSTRACT Purpose To investigate dipole antennas with electronically switchable transmit field patterns to improve flip angle homogeneity in ultra‐high field MRI. Methods Reconfigurable dipole elements that could produce two distinct electronically switchable B1+ field profiles were conceptualized and constructed.
Dario Bosch   +5 more
wiley   +1 more source

A Useful Approximation to Add up Contributions in Ray Based EM Propagation Algorithms [PDF]

open access: yes, 2007
Allegretti, Marco   +2 more
core  

Two Scale FE‐FFT‐Based Modeling of Cancellous Bone

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Osteoporosis is characterized by a loss of volume percentage of cortical bone, which reduces the loading capacity of this organ and increases its likelihood for fractures. The disease has the highest prevalence of any bone disease worldwide, with a particularly high incidence among the elderly.
Mischa Blaszczyk   +3 more
wiley   +1 more source

Flexible Dual Fabry–Perot Filters Enabling Color Balanced Narrowband Emission Designed by Physics Guided Neural Inverse Optimization

open access: yesNanophotonics, Volume 15, Issue 10, 27 May 2026.
The dual Fabry–Perot interferometer (DFPI) with functionally separated cavities enables simultaneous RGB peak alignment and spectral rebalancing without subpixel patterning. Multi resonance generation and fine spectral tuning are independently controlled, enhancing the color purity.
Keun Soo Shin, Ki Won Jeong, Yun Seon Do
wiley   +1 more source

Electromagnetic Quasinormal Modes: A Foundational Framework for Describing Fano Resonances of Extinction Spectra

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
An ab initio electromagnetic framework links quasinormal modes to Fano resonances in extinction spectra. Analytical expressions for the Fano asymmetry and intensity parameters are derived from overlap integrals, enabling rapid spectral reconstruction and physical interpretation.
Mikhail Bochkarev   +5 more
wiley   +1 more source

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