The nonlinear field produced by 1-D and 2-D imaging arrays with plane and diverging wave modes for ultrafast imaging

2020 ◽  
Vol 148 (4) ◽  
pp. 2556-2556
Author(s):  
Ting-Yu Lai ◽  
Michalakis A. Averkiou
Keyword(s):  
Nonlinear Field ◽  
Imaging Arrays ◽  
Ultrafast Imaging ◽  
Wave Modes

scholarly journals Ultrafast Imaging at All Frequencies

Physics ◽  
2020 ◽  
Vol 13 ◽  
Author(s):  
Marric Stephens
Keyword(s):  
Ultrafast Imaging

scholarly journals Electrical characterisation of higher order spin wave modes in vortex-based magnetic tunnel junctions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Alex. S. Jenkins ◽  
Lara San Emeterio Alvarez ◽  
Samh Memshawy ◽  
Paolo Bortolotti ◽  
Vincent Cros ◽  
...  
Keyword(s):  
Spin Wave ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Higher Order ◽  
Spin Torque ◽  
Micromagnetic Simulations ◽  
Higher Order Modes ◽  
Spin Diode ◽  
Super High Frequency ◽  
Wave Modes

AbstractNiFe-based vortex spin-torque nano-oscillators (STNO) have been shown to be rich dynamic systems which can operate as efficient frequency generators and detectors, but with a limitation in frequency determined by the gyrotropic frequency, typically sub-GHz. In this report, we present a detailed analysis of the nature of the higher order spin wave modes which exist in the Super High Frequency range (3–30 GHz). This is achieved via micromagnetic simulations and electrical characterisation in magnetic tunnel junctions, both directly via the spin-diode effect and indirectly via the measurement of the coupling with the gyrotropic critical current. The excitation mechanism and spatial profile of the modes are shown to have a complex dependence on the vortex core position. Additionally, the inter-mode coupling between the fundamental gyrotropic mode and the higher order modes is shown to reduce or enhance the effective damping depending upon the sense of propagation of the confined spin wave.

scholarly journals Modeling dark matter halos with nonlinear field theories

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
R. A. C. Correa ◽  
P. H. R. S. Moraes ◽  
A. de Souza Dutra ◽  
O. L. Dors ◽  
W. de Paula ◽  
...  
Keyword(s):  
Dark Matter ◽  
Field Theories ◽  
Dark Matter Halos ◽  
Nonlinear Field

scholarly journals Calculating millimeter-wave modes of copper twisted-pair cables using transformation optics

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Ali Mohajer Hejazi ◽  
Gert-Jan Stockman ◽  
Yannick Lefevre ◽  
Vincent Ginis ◽  
Werner Coomans
Keyword(s):  
Millimeter Wave ◽  
Transformation Optics ◽  
Twisted Pair ◽  
Wave Modes
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