Results 71 to 80 of about 16,741 (297)

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

Advanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng, Chun‐Hao Chiang, Sunhao Shi, Jui‐Han Fu, Yen‐Ju Wu, Kuniaki Konishi, Vincent Tung, Chun‐Wei Chen, Ya‐Lun Ho   +8 more
wiley   +1 more source

A Comprehensive Review of Metasurface Structures Suitable for RF Energy Harvesting

IEEE Access, 2020
Energy harvesting (EH) or scavenging is recognized as harvesting energy from ambient energy sources in the surrounding environment. This paper reports a literature review on radio frequency (RF) EH using different metasurface/metamaterial structures ...
Abdulrahman Ahmed Ghaleb Amer, Syarfa Zahirah Sapuan, Nasimuddin Nasimuddin, Arokiaswami Alphones, Nabiah Binti Zinal   +4 more
doaj   +1 more source

Wideband P-Shaped Dielectric Resonator Antenna [PDF]

, 2013
A novel P-shaped dielectric resonator antenna (DRA) is presented and investigated for wideband wireless application. By using P-shaped resonator, a wideband impedance bandwidth of 80% from 3.5 to 8.2 GHz is achieved.
Danesh, S., Khalily, M., Kishk, A.A., Rahim, M.K.A.   +3 more
core  

Compact electric-LC resonators for metamaterials

, 2010
Alternative designs to an electric-LC (ELC) resonator, which is a type of metamaterial inclusion, are presented in this article. Fitting the resonator with an interdigital capacitor (IDC) helps to increase the total capacitance of the structure.
Alley, Aydin, Aydin, Baena, Bilotti, Caloz, Caloz, Chen, Chen, Christophe Fumeaux, Chu, Dai, Derek Abbott, Fang, Houzet, Koschny, Lapine, Lenz, Ordal, Padilla, Pendry, Pendry, Sanada, Schurig, Schurig, Shalaev, Smith, Smith, Withawat Withayachumnankul, Withayachumnankul, Zharova   +30 more
core   +1 more source

Embedded dielectric resonator antenna for bandwidthenhancement

Electronics Letters, 1997
A new embedded structure with an annular ring and a cylindrical dielectric resonator excited by means of a coaxial probe has been realised and investigated experimentally to obtain a large bandwidth enhancement. The return loss, radiation patterns, and antenna gain of this configuration are presented.
Sangiovanni, A., Dauvignac, Jean-Yves, Pichot, Christian   +2 more
openaire   +1 more source

Through Diamond Robust Surface Enhanced Raman Spectroscopy

Advanced Functional Materials, EarlyView.
Thin film diamond growth offers a unique opportunity for Surface Enhanced Raman Spectroscopy (SERS); the encapsulation of plasmonic nanostructures within a transparent, chemically stable, and physically robust coating. The diamond acts as both a window and protective layer, enabling illumination of the plasmonic nanostructures through the diamond ...
Kieran N. Twaddle, Rebecca J. Watkins, Ralph J. Moors, Massimiliano L.A. Ramsay, Richard B. Jackman   +4 more
wiley   +1 more source

A Study of Wideband Dielectric Resonator Antennas Loaded With Special Dispersive Materials

IEEE Open Journal of Antennas and Propagation
In this paper, a comprehensive study of wideband dielectric resonator antennas (DRAs) loaded with special dispersive materials is given in detail. The concept and theory for a new class of wideband and compact DRAs are introduced for the first time using
Xiantao Yang, Elliot Leon Bennett, Ilkan Calisir, Qiang Hua, Jianliang Xiao, Yi Huang   +5 more
doaj   +1 more source

Brewster quasi bound states in the continuum in all-dielectric metasurfaces from single magnetic-dipole resonance meta-atoms

, 2019
Bound states in the continuum (BICs) are ubiquitous in many areas of physics, attracting especial interest for their ability to confine waves with infinite lifetimes.
Abujetas, Diego R., Barreda, Angela, Geffrin, Jean-Michel, Litman, Amelie, Moreno, Fernando, Saenz, Juan J., Sanchez-Gil, Jose A.   +6 more
core   +3 more sources

The Trapezoidal Dielectric Resonator Antenna [PDF]

IEEE Transactions on Antennas and Propagation, 2008
The operational concepts of the trapezoidal dielectric resonator antennas (DRAs) are presented and their performance is studied theoretically and experimentally. The rectangular parallelepiped is a special case of the more general trapezoid and therefore a comparison between both is useful in order to highlight their similarities and differences. It is
Almpanis, G., Fumeaux, C., Vahldieck, R.
openaire   +2 more sources

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

Advanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker, Yu Wang, Yongwen Sun, Caeli Benyacko, Saeed S.I. Almishal, Tao Zhou, Zhiyu Zhang, Jadupati Nag, Himirkanti Sarkar, Jeffrey Shallenberger, Hemant Yennawar, Yang Yang, Jon‐Paul Maria, Zhiqiang Mao, Venkatraman Gopalan   +14 more
wiley   +1 more source