Results 201 to 210 of about 3,149 (257)

Dual-band composite high gain MIMO antenna for 5G NR applications employing shareable small cell radio unit. [PDF]

Sci Rep
Asadullah, Shoaib N, Khan MU, Ahmed A, Aburas AA, Abbasi QH.   +5 more
europepmc   +1 more source

Open-Source Multinuclear Low-Field Preclinical MRI Scanner. [PDF]

NMR Biomed
Rodriguez GG, Korchak S, von Petersdorff-Campen C, Sucre O, Felger J, Mei R, Glöggler S.   +6 more
europepmc   +1 more source

Optimization of ultra-wideband metamaterial MXene-based polarization-insensitive solar absorber using machine learning for solar heater application. [PDF]

Sci Rep
Ali NB, Agravat R, Patel SK, Armghan A, Kouki M, Kumar OP.   +5 more
europepmc   +1 more source

Wireless battery-free ultrathin lithium-niobate resonator as wearable and implantable electronics for continuous monitoring of mechanical vital signs. [PDF]

Nat Commun
Zhou L, Liu P, Liu J, Yuan W, Wu Z, Xu D, Hu B, Shao Y, Lu Y, Huang N, Li J, Li Z, Liang F, Wu X, Ma L, Wang M, Di Z, Li R, Bi Y, Xu F, Mei Y, Song E.   +21 more
europepmc   +1 more source

Nanosecond Structure of Radical Pair Intermediates from High-Frequency Quantum Oscillations: Insight into the Q_A^•- to Q_B Electron Transfer Step in Purple Bacterial Photosynthesis. [PDF]

J Phys Chem B
Matsuoka H, Link G, Heinen U, Poluektov OG, Utschig LM, Thurnauer MC, Weber S, Kothe G.   +7 more
europepmc   +1 more source

Near-Unity Absorption in Semiconductor Metasurfaces Using Kerker Interference. [PDF]

Nano Lett
Grayli SV, Patel T, van Kasteren B, Kokilathasan S, Tekcan B, Alan Tam MC, Losin WF, Odinotski S, Tsen AW, Wasilewski ZR, Reimer ME.   +10 more
europepmc   +1 more source

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Resonant frequencies of cylindrical Helmholtz resonators

The Journal of the Acoustical Society of America, 1975
A simple analysis predicts the Helmholtz and higher modes of cylindrical resonators. Formulas for the quarter-wave tube, the closed tube, and the classic Helmholtz resonator are special cases. It is found that the classic Helmholtz formula begins to lose accuracy for resonator lengths L≳λ/16.
Ronald L. Panton, John M. Miller
openaire   +1 more source

Resonance in open coaxial cylindrical resonators

International Journal of Infrared and Millimeter Waves, 1996
A study of the electrodynamical properties of open coaxial cylindrical resonators using a partially conical inner rod is made along with experimental verification. On the basis of a geometrical criterion for the occurrence of high-Q resonances, it turns out to be possible to discriminate certain classes of TE modes by keeping to a minimum value their ...
J. J. Barroso, P. J. Castro, R. A. Corrêa   +2 more
openaire   +1 more source

Topological Cylindrical Resonators and Optical Fibers

2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2019
We propose optical resonators based on the edge modes of a cylindrical multilayer structure with nontrivial topological configuration. We calculate the field confinement and resonator dispersion by a recursive approach [1] able to tackle with arbitrary arrangements of annular concentric layers.
Pilozzi L, Conti C.
openaire   +2 more sources

Experimental Investigation of a Cylindrical Resonator

AIAA Journal, 1974
Similar to a conventional resonance tube, a cylindrical resonator is investigated experimentally for producing high pressure and temperature gases. A quartz pressure transducer was used to determine pressure at the center of the resonator disk and a schlieren system to observe internal and external shock waves.
JAMES H. T. WU, P. PERRY OSTROWSKI, RAFIK A. NEEMEH, PATRICK H. W. LEE   +3 more
openaire   +1 more source