Results 21 to 30 of about 40,326 (144)

Actively electromagnetic modulation of IHI-shaped terahertz metamaterial with high-efficiency switching characteristic

Results in Physics, 2019
We present terahertz (THz) metamaterial with multi-configurations, which are composed of H-shaped, II-shaped, and IHI-shaped configurations, respectively.
Xiao Zhang, Yu-Sheng Lin
doaj   +1 more source

Microelectromechanical Maltese-cross metamaterial with tunable terahertz anisotropy

, 2012
Dichroic polarizers and waveplates exploiting anisotropic materials have vast applications in displays and numerous optical components, such as filters, beamsplitters and isolators. Artificial anisotropic media were recently suggested for the realization
Zhu, W.M., Zhang, X.H., Bourouina, T., Kwong, D.L., Tsai, D.P., Liu, A.Q., Lo, G.Q., Zheludev, N.I., Teng, J.H.   +8 more
core   +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

An active viscoelastic metamaterial for isolation applications

, 2014
Metamaterials are of interest due to their ability to produce novel acoustic behaviour beyond that seen in naturally occurring media. Of particular interest is the appearance of band gaps which lead to very high levels of attenuation within narrow ...
Reynolds, Matthew, Daley, Stephen
core   +1 more source

Microwave modes of ambidextrous helices

Scientific Reports
This work presents an investigation into the electromagnetic properties of ambidextrous helices, structures composed of equal numbers of left- and right-handed turns, operating in the gigahertz frequency range.
J. Gudge-Brooke, N. Clow, A. P. Hibbins, A. W. Powell, J. R. Sambles   +4 more
doaj   +1 more source

Zero electromagnetic coupling of closely spaced identical helical resonators

Scientific Reports
The interaction between closely spaced elements in an electromagnetic array typically leads to significant inter-element coupling, altering the resonance properties of each element.
J. Gudge-Brooke, N. Clow, A. P. Hibbins, A. W. Powell, J. R. Sambles   +4 more
doaj   +1 more source

Emulation of metamaterial waveguides

Algerian Journal of Signals and Systems, 2018
In this work, we are interested by emulating metamaterial microwave waveguides which behave like conventional metallic ones. We use metamaterial layers based on two types of unit cells.
Khedidja BOURAS, Abdelhadi LABIAD, Chaker SALEH, Mouloud BOUZOUAD   +3 more
doaj   +1 more source

Structural design and optimization of double-cross shape broadband absorption metamaterial based on CB-ABS

Frontiers in Materials, 2022
This work presents a novel broadband double-cross shape metamaterial structure based on the Carbon Black-Acrylonitrile-Butadiene-Styrene (CB-ABS) composite material.
Mengzhou Chen, Liuying Wang, Gu Liu, Chaoqun Ge, Long Wang, Kejun Xu, Weichao Wang   +6 more
doaj   +1 more source

Nonlocal phase-change metaoptics for reconfigurable nonvolatile image processing

Light: Science & Applications
The next generation of smart imaging and vision systems will require compact and tunable optical computing hardware to perform high-speed and low-power image processing.
Guoce Yang, Mengyun Wang, June Sang Lee, Nikolaos Farmakidis, Joe Shields, Carlota Ruiz de Galarreta, Stuart Kendall, Jacopo Bertolotti, Andriy Moskalenko, Kairan Huang, Andrea Alù, C. David Wright, Harish Bhaskaran   +12 more
doaj   +1 more source

Transmission Enhancement through Sub-Wavelength Aperture Based on Regulable Water-Based Metamaterial

Photonics, 2023
A realization form of the Mie resonance with adjustable characteristics based on a water-based metamaterial is proposed. A novel local electromagnetic field coupling mechanism based on a water-based metamaterial is established, which is used for ...
Pengfei Shi, Xiaodong Li, Hongge Zhao, Youfu Tang, Jingwei Zhu, Renjing Gao, Shutian Liu   +6 more
doaj   +1 more source