Results 71 to 80 of about 71,755 (196)

Bound states in the continuum (BIC) accompanied by avoided crossings in leaky-mode photonic lattices

Nanophotonics, 2020
When two nonorthogonal resonances are coupled to the same radiation channel, avoided crossing arises and a bound state in the continuum (BIC) appears with appropriate conditions in parametric space. This paper presents numerical and analytical results on
Lee Sun-Goo, Kim Seong-Han, Kee Chul-Sik
doaj   +1 more source

Broadband Wireless Communication Systems for Vacuum Tube High-Speed Flying Train

Applied Sciences, 2020
A vactrain (or vacuum tube high-speed flying train) is considered as a novel proposed rail transportation approach in the ultra-high-speed scenario. The maglev train can run with low mechanical friction, low air resistance, and low noise mode at a speed ...
Chencheng Qiu, Liu Liu, Botao Han, Jiachi Zhang, Zheng Li, Tao Zhou   +5 more
doaj   +1 more source

Anisotropy-induced band transition and merging of bound states in the continuum in gratings

Results in Physics
We propose the grating systems composed of anisotropic material and study the tunability of such anisotropy to the evolutions of bound states in the continuum (BICs) and leaky mode, as well as the band flip between odd- and even-mode.
Ying Chen, Siyu Lei, Ze-Huan Zheng, Shan Zhu, Feng Wu, Huanyang Chen   +5 more
doaj   +1 more source

Observation of multiple sausage oscillations in cool postflare loop

, 2008
Using simultaneous high spatial (1.3 arc sec) and temporal (5 and 10 s) resolution H-alpha observations from the 15 cm Solar Tower Telescope at ARIES, we study the oscillations in the relative intensity to explore the possibility of sausage oscillations ...
A. K. Srivastava, Ali, Andries, Aschwanden, Aschwanden, Aschwanden, B. N. Dwivedi, De Moortel, Díaz, Edwin, Joshi, Linnell Nemec, McEwan, Nakariakov, Nakariakov, Nakariakov, Nakariakov, O'Shea, O'Shea, Pankaj Kumar, Pascoe, Roberts, Selwa, Srivastava, T. V. Zaqarashvili, Torrence, Van Doorsselaere, Verth, Verwichte, Verwichte, W. Uddin, Wang   +31 more
core   +1 more source

The Low-Attenuation Endfire Leaky-Wave State on an Optically Transparent Lossy Film

Engineering
The development of high-performance optically transparent radio frequency (RF) radiators is limited by the intrinsic loss issue of transparent conductive films (TCFs).
Ziheng Zhou, Yongjian Zhang, Yilin Zheng, Ke Chen, Yueming Gao, Yuehe Ge, Yue Li, Yijun Feng, Zhizhang (David) Chen   +8 more
doaj   +1 more source

Exciton-polariton emission from organic semiconductor optical waveguides

, 2011
We photo-excite slab polymer waveguides doped with J-aggregating dye molecules and measure the leaky emission from strongly coupled waveguide exciton polariton modes at room temperature.
B. E. A. Saleh, Kenneth B. Crozier, Tal Ellenbogen   +2 more
core   +1 more source

Reconfigurable leaky-mode/multifunction patch antennastructure

Electronics Letters, 1999
A reconfigurable aperture where different types of antennas and arrays with multiband coverage and multiple functions share a common planar physical aperture is proposed. Using either conventional or MEMS switches, a microstrip-based leaky-mode antenna array can easily be reconfigured to patch antennas operating at multiple frequency bands as well as ...
Y. Qian, B.C.C. Chang, M.F. Chang, T. Itoh   +3 more
openaire   +1 more source

Transmission enhancement through square coaxial apertures arrays in metallic film: when leaky modes filter infrared light

, 2014
We consider arrays of square coaxial apertures in a gold layer and study their diffractive behavior in the far infrared region. These structures exhibit a resonant transmission enhancement that is used to design tunable bandpass filters.
Bedu, Frédéric, Commandré, Mireille, Dallaporta, Hervé, Demésy, Guillaume, Nicolet, André, Roux, Laurent, Tisserand, Stéphane, Vial, Benjamin, Zolla, Frédéric   +8 more
core   +3 more sources

Sensitivity of Coronal Loop Sausage Mode Frequencies and Decay Rates to Radial and Longitudinal Density Inhomogeneities: A Spectral Approach

, 2017
Fast sausage modes in solar magnetic coronal loops are only fully contained in unrealistically short dense loops. Otherwise they are leaky, losing energy to their surrounds as outgoing waves.
Cally, Paul S., Xiong, Ming
core   +1 more source

JCMmode: An Adaptive Finite Element Solver for the Computation of Leaky Modes

, 2005
We present our simulation tool JCMmode for calculating propagating modes of an optical waveguide. As ansatz functions we use higher order, vectorial elements (Nedelec elements, edge elements).
Burger, S., Klose, R., Schaedle, A., Schmidt, F., Zschiedrich, L.   +4 more
core   +2 more sources