Results 71 to 80 of about 790 (185)

A General Framework for Knowledge Integration in Machine Learning for Electromagnetic Scattering Using Quasinormal Modes

Laser &Photonics Reviews, EarlyView.
Neural networks can accelerate modeling and inverse design of electromagnetic devices by several orders of magnitude, but usually require large amounts of data to train. This work demonstrates that integrating knowledge about quasinormal modes into the network architecture reduces the required amount of training data significantly, while simultaneously
Viktor A. Lilja, Albin J. Svärdsby, Timo Gahlmann, Philippe Tassin   +3 more
wiley   +1 more source

Experimental demonstration of merging quasi-BICs in photonic crystal slabs

Materials & Design
Merging bound states in the continuum (BICs) and avoided crossing of resonances (ACR) are promising theoretical approaches to greatly enhance the quality (Q) factors of quasi-BICs in reciprocal space.
Bingtao Li, Shiyu Liu, Wenjun Li, Zheng-Da Hu, Yun Zhu, Jicheng Wang, Yuting Yang, Xiaopeng Shen   +7 more
doaj   +1 more source

Cherenkov Emission Generated by a Modulated Source in 2D Dispersive Photonic Crystal Slabs

Advances in Materials Science and Engineering, 2020
This work presents a systematic numerical study of Cherenkov optical radiation generated by a modulated source that moves with uniform velocity on a two-dimensional (2D) photonic crystal (PCr) slab surface.
Erika Martínez-Sánchez, Gennadiy Burlak, Carlos Rodríguez-Garcia, Marisol Gallardo-Heredia, Ulises Avila-López   +4 more
doaj   +1 more source

Synthesis of Core–Shell Te@Se Quantum Dots and Their Broadband Photodetector Performance in Low Concentration Electrolytes

Laser &Photonics Reviews, EarlyView.
Te@Se core–shell heterojunction quantum dots (QDs) are synthesized by a two‐step strategy via combining liquid‐phase exfoliation and epitaxial growth. As active materials in photoelectrochemical photodetectors, Te@Se QDs exhibit excellent photo‐response performance in low‐concentration electrolytes and deionized water.
Yiming Zhao, Artem V. Kuklin, Jiahui Hou, Mingqi He, Lyudmila V. Begunovich, Han Zhang, Ying Li, Hans Ågren, Lingfeng Gao   +8 more
wiley   +1 more source

Efficient Color Filters Based on Fano-Like Guided-Mode Resonances in Photonic Crystal Slabs

IEEE Photonics Journal, 2018
We numerically report designs of color filters comprising of 2-D photonic crystal (2D-PhC) slabs of square lattice of air holes. The filter principle is based on excited Fano-like guided-mode resonances (GMRs) in the visible regime with high-quality ...
Van An Nguyen, Quang Minh Ngo, Khai Quang Le   +2 more
doaj   +1 more source

Topological Photonic Devices and Circuits at Terahertz Frequencies

Laser &Photonics Reviews, EarlyView.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor, Srabani Kar, Ranjan Singh, Kaveh Delfanazari   +3 more
wiley   +1 more source

Uncovering Exotic Topological Quantum States in Pure and Magnetically‐Doped Pyrite OsS2

Advanced Quantum Technologies, EarlyView.
Pyrite‐structured OsS2 is identified as a fragile topological insulator with an unprecedented 602 meV bandgap, featuring helical surface states and van Hove singularities amenable to ARPES verification. Magnetic doping with Pd, Fe, Ni, or Co induces phase transitions to strong topological insulators, semimetals, 3D quantum anomalous Hall insulators ...
Ali Sufyan, Hasan M. Abdullah, Gustav Johansson, Alexander C. Tyner, Hafiz Adil Qayyum, Ghulam Abbas Gilani, Rovi Angelo B. Villaos, Zhi‐Quan Huang, Feng‐Chuan Chuang, J. Andreas Larsson   +9 more
wiley   +1 more source

Gallium Nitride‐Based Electrode Materials for Supercapacitors: From Wide Band Semiconductor to Energy Storage Platform

Small, EarlyView.
This review focuses on capability of Gallium Nitride (GaN)‐based supercapacitors, bordering the advancement from porous architecture to novel hybrid nanostructures. It systematically investigates synthesis approaches and charge storage mechanisms that generate remarkable energy densities and competent cyclic stability.
Farasat Haider, Batool Esmat, Ali Raza Kashif, Muhammad Shahid Khan, Akif Safeen, Basit Ali Khan, Karim Khan, Basit Ali   +7 more
wiley   +1 more source

Emergence of Light‐Transforming Layered Hybrid Halide Perovskites

Advanced Functional Materials, Volume 36, Issue 21, 12 March 2026.
The emerging class of light‐transforming layered halide perovskite materials is reviewed, outlining challenges for their development and perspectives toward application in the future. Abstract Layered hybrid halide perovskites (LHPs) have attracted considerable attention in optoelectronics.
Ghewa AlSabeh, Jovana V. Milić
wiley   +1 more source

Direct experimental visualization of waves and band structure in 2D photonic crystal slabs

New Journal of Physics, 2014
We demonstrate for the first time the ability to perform time resolved imaging of terahertz (THz) waves propagating within a photonic crystal (PhC) slab.
Benjamin K Ofori-Okai, Prasahnt Sivarajah, Christopher A Werley, Stephanie M Teo, Keith A Nelson   +4 more
doaj   +1 more source