Results 51 to 60 of about 168,687 (391)
Acoustic Metamaterials in Aeronautics [PDF]
Applied Sciences, 2018 Metamaterials, man-made composites scaled smaller than the wavelength, have demonstrated a huge potential in their applications in acoustics, opening up for sub--wavelength acoustic absorbers, acoustic invisibility, perfect acoustic mirrors and acoustic lenses for hyper focusing, acoustic illusions and enabling new degrees of freedom in the control of ...
Palma, Giorgio +4 more
openaire +5 more sources
Highly tunable low frequency metamaterial cavity for vibration localization
Scientific Reports, 2022 Metamaterial cavity has gathered much attention recently due to its capability of localizing vibration energy. Despite the active research, however, there are still big technical challenges not solved yet.
Hong Woo Park +4 more
doaj +1 more source
Tunable Metamaterials Fabricated by Fiber Drawing [PDF]
J. Opt. Soc. Am. B 34, D81-D85 (2017), 2017 We demonstrate a practical scalable approach to the fabrication of tunable metamaterials. Designed for THz wavelengths, the metamaterial is comprised of polyurethane filled with an array of indium wires using the well-established fiber drawing technique.
arxiv +1 more source
Metamaterial Based Circular Disc Patch Antenna Miniaturization
Advanced Electromagnetics, 2018 A novel metamaterial structure has been proposed for its operation at 2.4 GHz. A circular disc patch antenna resonating at dual band frequency with 2.4 GHz and 3.36 GHz has been designed using full field solver CST MWS tool and the loading effect of the ...
V. Kumar, Y. Wu
doaj +1 more source
Enhancement of Coulomb blockade in epsilon near zero and hyperbolic metamaterials [PDF]
Physica C 556, 14-18 (2019), 2017 Coulomb interaction of charges in a metamaterial may be expressed via its effective dielectric response function. Coulomb interaction appears considerably enhanced in artificially engineered epsilon near zero (ENZ) and hyperbolic metamaterials. Indeed, very recently it was observed that negative ENZ conditions enhance superconducting properties of a ...
arxiv +1 more source
A d.c. magnetic metamaterial [PDF]
Nature Materials, 2008 Electromagnetic metamaterials are a class of materials which have been artificially structured on a subwavelength scale. They are currently the focus of a great deal of interest because they allow access to previously unrealisable properties like a negative refractive index.
Magnus, F +9 more
openaire +7 more sources
Broadband Purcell effect: Radiative decay engineering with metamaterials [PDF]
, 2011 Engineering the photonic density of states (PDOS) using resonant microcavities or periodic dielectric media gives control over a plethora of classical and quantum phenomena associated with light.
Jacob, Zubin +2 more
core +3 more sources
Tunable transmission and harmonic generation in nonlinear metamaterials
, 2008 We study the properties of a tunable nonlinear metamaterial operating at microwave frequencies. We fabricate the nonlinear metamaterial composed of double split-ring resonators and wires where a varactor diode is introduced into each resonator so that ...
Alexander B. Kozyrev +4 more
core +1 more source
SAR Reduction Using Integration of PIFA and AMC Structure for Pentaband Mobile Terminals
International Journal of Antennas and Propagation, 2017 In this paper, a capacitive grating artificial magnetic conductor (AMC) is presented to reduce the specific absorption rate (SAR) in pentaband mobile terminals. The AMC structure is implemented using a dielectric film with the printed arrays of the metal
Jae-Gon Lee, Jeong-Hae Lee
doaj +1 more source
Applied Sciences, 2022 The electromagnetically induced transparency effect of terahertz metamaterials exhibits excellent modulation and sensing properties, and it is critical to investigate the modulation effect of the transparent window by optimizing structural parameters. In
Zhenlin Wu +8 more
doaj +1 more source