Results 61 to 70 of about 21,050 (313)
Advanced Optical Materials, EarlyView.A metal‐based thermal metasurface supporting bound states in the continuum is demonstrated and experimentally shown to achieve a record‐high quality factor of 202 and high emissivity of 0.82. The design offers thermally stable, narrowband mid‐infrared emission, making it ideal for high‐precision gas sensing applications.
Guodong Zhu +8 more
wiley +1 more source
High Gain Compact Strip and Slot UWB Sinuous Antennas
International Journal of Antennas and Propagation, 2012 Three ground-backed compact strip-and slot-sinuous antennas are analyzed. Proposed configuration allows for a single lobe, polarization-versatile, high efficiency, and ultrawide band antenna not needing a cumbersome lossy back cavity typical of ...
Elson Agastra +3 more
doaj +1 more source
Sub-6GHz 4G/5G Conformal Glasses Antennas
IEEE Access, 2019 The difficulty of antenna design applied to glasses is that the structure of glasses is too single, and the space available for antenna design is greatly limited. In this background, the integrated design of 4G antennas and 5G antennas applied to glasses
Yan-Yan Wang, Yong-Ling Ban, Yanhui Liu
doaj +1 more source
Compact Sub-6-GHz Four-Element MIMO Slot Antenna System for 5G Tablet Devices
IEEE Access, 2020 A sub-6-GHz four-element multi-input multi-output (MIMO) slot antenna system was proposed in this study for fifth-generation (5G) tablet computers, where each antenna element was constructed using a slot structure.
Shu-Chuan Chen +3 more
doaj +1 more source
Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering
Advanced Photonics Research, Volume 6, Issue 5, May 2025.Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik +7 more
wiley +1 more source
A wideband end‐fire stepped slot antenna with gain enhancement and filtering capability
IET Microwaves, Antennas & PropagationA wideband end‐fire stepped slot antenna with gain enhancement and filtering capability is proposed. On one hand, a parasitic dipole serving as a director is introduced in the stepped slot to improve the radiation gain of the slot antenna without ...
Shiyan Wang +6 more
doaj +1 more source
Advanced Photonics Research, EarlyView.This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida +3 more
wiley +1 more source
Advanced Photonics Research, EarlyView.This study investigates high‐efficiency double perovskite active layer (DPAL) structures using MAPbI3 and MASnI3 to surpass the Shockley‐Queisser limit in single‐junction perovskite solar cells. SCAPS‐1D simulations show that the V2O5‐assisted DPAL device achieves 34.14% power conversion efficiency with improved JSC, VOC, and FF.
Afifa Lubaba +7 more
wiley +1 more source
Miniaturization of UWB Antennas on Organic Material
International Journal of Antennas and Propagation, 2016 Three planar, CPW-fed, UWB antennas with increasingly reduced size are presented and the miniaturization method is discussed. The first antenna is a CPW-fed elliptical slot with an uneven U-shaped tuning stub, the second antenna is a cactus shaped ...
Symeon Nikolaou +1 more
doaj +1 more source