Results 151 to 160 of about 12,368,946 (291)

Enhancement of Circular Dichroism in Chiral Dielectric Metasurfaces by Ion Beam Irradiation

Advanced Optical Materials, EarlyView.
Ion beam irradiation enables post fabrication tuning of dissipative losses in chiral dielectric metasurfaces composed of C4 symmetric silicon nanostructures. By tailoring the absorption toward critical coupling condition, circular dichroism is enhanced from 0.70 to 0.85, demonstrating a versatile route for maximizing optical chirality and polarization ...
Anna Fitriana, Katsuya Tanaka, Lukas Raam Jaeger, Martin Hafermann, Thomas Pertsch, Carsten Ronning, Isabelle Staude   +6 more
wiley   +1 more source

Ultra-Wideband Optically Transparent Absorbing Metasurface Based on Multilayer ITO Films. [PDF]

Nanomaterials (Basel)
Lu G, Liu M, Wang B.
europepmc   +1 more source

Localized Ion Irradiation Enables Topography‐Free High‐Tc Superconducting Metamaterials

Advanced Optical Materials, EarlyView.
A topography‐free oxygen ion‐irradiation strategy is demonstrated for patterning superconducting YBCO terahertz metamaterials without physical material removal. The approach preserves film integrity while enabling large spectral tunability, ultrafast optical modulation, and dual‐band resonance control, providing a scalable platform for low‐loss ...
Teng Chen Ietro Pang, Yogesh Kumar Srivastava, Sobhan Subhra Mishra, Sambhu Jana, Jérôme Lesueur, Ranjan Singh   +5 more
wiley   +1 more source

Tessellation-Enabled Hexagonal Hollow-Shell Cavity Arrays for Broadband Microwave Absorption via Acoustic-to-Electromagnetic Cavity Mapping. [PDF]

Small Methods
Liu S, Liao W, Luo P, Jin M, Yan T, Zhao X, Wang Q, Lu H.   +7 more
europepmc   +1 more source

Dielectric Permittivity Tensor of Muscovite for Next Generation All Van Der Waals Broadband Photonic Components

Advanced Optical Materials, EarlyView.
Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan, Maksim L. Sargsyan, Davit A. Karakhanyan, Ani P. Khachatryan, Maria A. Levonyan, Dmitrii Litvinov, Maciej Koperski, Artsruni V. Margaryan, Makars Šiškins, Konstantin S. Novoselov, Davit A. Ghazaryan   +10 more
wiley   +1 more source

New Electromagnetic Methods and Applications of Antennas in Biomedicine

International Journal of Antennas and Propagation, 2008
Tamer Ibrahim, Elise Fear, Stuart Crozier   +2 more
doaj   +1 more source

Directional Freezing Fabrication of RSF/PVA/MXene Aerogels: Layered Structure and High-Efficiency Electromagnetic Interference Shielding. [PDF]

Materials (Basel)
Gao P, Wang Y, Li Y, Ding B, Guo J, Yuan Y, Xu Z, Zhang D, Li L, Wang X, Zhang C, Teng C.   +11 more
europepmc   +1 more source

Large‐Area Flat Optics Color Routing in Tilted Arrays of 2D Semiconductor Nanostripes

Advanced Optical Materials, EarlyView.
We develop a scalable flat optics platform exploiting self‐organised ion‐beam sputtering and maskless glancing‐angle deposition to fabricate centimetre‐scale arrays of tilted MoS2 nanostripes. The engineered geometry activates Rayleigh anomalies, guided modes, and Mie resonances, enabling highly directional color routing and enhanced light harvesting ...
Simone Di Marco, Daniele Ceneda, Matteo Barelli, Matteo Gardella, Rajesh Chennuboina, Maria C. Giordano, Marco Centini, Francesco Buatier de Mongeot   +7 more
wiley   +1 more source

Rydberg-Atom-Based Angle-of-Arrival Estimation Method for Ku-Band Microwave Signals. [PDF]

Sensors (Basel)
Hu X, Wu H, Gao Y, Zhang B, Liu P, Chen S.   +5 more
europepmc   +1 more source

Scalable Design and Optimization of Reconfigurable Sb2S3 Metasurfaces

Advanced Optical Materials, EarlyView.
Scalable optimization methodologies are developed for reconfigurable Sb2S3 Huygens metasurfaces by combining localized phase‐match and overlap‐integral cost functions that account for inter‐element coupling. The framework enables computationally efficient design of large‐area, dual‐state flat optical devices with arbitrary wavefront transformations ...
Siddharth Padmanabha, Isaac O. Oguntoye, Matthew Escarra   +2 more
wiley   +1 more source