Results 71 to 80 of about 1,124,267 (228)

Ultra-low-loss on-chip zero-index materials

Light: Science & Applications, 2021
Zero-index media: ultra-low loss Calculations suggest that a new design of engineered medium can simultaneously yield a refractive index of zero and low optical loss at the telecommunications wavelength of 1550 nm.
Tian Dong, Jiujiu Liang, Sarah Camayd-Muñoz, Yueyang Liu, Haoning Tang, Shota Kita, Peipei Chen, Xiaojun Wu, Weiguo Chu, Eric Mazur, Yang Li   +10 more
doaj   +1 more source

Realisation of ultra-low loss photonic crystal slab waveguide devices

, 2005
In this paper we demonstrate low loss transmission both above and below the primary band-gap for a photonic crystal (PC) super-prism device consisting of 600 lattice periods.
Perney, N., Charlton, M.D.B., Parker, G.J., Baumberg, J.J., Zoorob, M.E., Ayliffe, P., Netti, M.C.   +6 more
core   +1 more source

Engineering Halide Perovskites With Chalcogen‐Based Compounds: Insights Into Stability, Interfaces, and Device Integration

Carbon Energy, EarlyView.
Chalcogen‐based compounds are explored as versatile tools to enhance the stability and performance of halide perovskites. Their roles in defect passivation, ion migration suppression, and interface engineering are analyzed, along with impacts on device efficiency.
Atanu Jana, Deblina Das, Sourav Mal, Tarak Nath Mandal, Sangeun Cho   +4 more
wiley   +1 more source

Low‐Dimensional Materials and Van Der Waals Heterostructures for Energy Application: A Comprehensive Review

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Low‐dimensional materials (0D, 1D, and 2D) exhibit unique electronic and physicochemical properties, enabling advanced nanoelectronic and optoelectronic devices. Mixed‐dimensional heterostructures combine these materials to enhance functionality.
Qaisar Alam, Sajjad Ali, Pir Muhammad Ismail, ABM Sharif Hossain   +3 more
wiley   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

FlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen, Kefan Meng, Yiqi Zhao, Chaoran Zhou, Jiaye Shu, Di Zhang, Chengqian Cao, Wanxin Chen, Yefeng Zhou, Weihua Ning   +9 more
wiley   +1 more source

Photonic crystals as functional mirrors for semiconductor lasers [PDF]

, 2008
In recent years, interest has grown in the research fields of semiconductor lasers and photonic crystals. This thesis looks at integrating photonic crystals into existing semiconductor laser technology to act as functional laser mirrors.
Moore, Stephen A.
core   +2 more sources

Effects of hydrostatic pressure on an L1 and L3 cavity of a photonic slab

Materials Research Express, 2020
In this work, we used the guided-mode expansion method to calculate the photonic band dispersion in two-dimensional photonic crystal slabs. The photonic lattice is hexagonal, composed of air holes with a circular cross-section.
Francis Segovia-Chaves, Herbert Vinck-Posada   +1 more
doaj   +1 more source

Crystalline–amorphous heterointerface engineering in oxygen‐vacancy‐activated BiOCl for high‐performance aqueous zinc‐ion batteries

FlexMat, EarlyView.
Oxygen vacancy engineered BiOCl with a crystalline–amorphous heterostructure, coupled with an I−/I3− ${\mathrm{I}}_{3}^{-}$ redox‐active electrolyte, enables the optimized cathode to deliver exceptional long‐term cycling stability for aqueous zinc‐ion batteries.
Longjue Hu, Sufang Chen, Daohong Zhang, Qiufan Wang   +3 more
wiley   +1 more source

Label-Free Monitoring of Diffusion in Microfluidics

Micromachines, 2017
Label-free, real-time detection of concentration gradients is demonstrated in a microfluidic H-filter, using an integrated photonic crystal slab sensor to monitor sample refractive index with spatial resolution.
Kristian Tølbøl Sørensen, Anders Kristensen   +1 more
doaj   +1 more source

Revealing the Resonant Physics of Open Photonic Time Crystals

Laser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero, Sergei Gladyshev, David Globosits, Stefan Rotter, Egor A. Muljarov, Thomas Weiss   +5 more
wiley   +1 more source