Results 61 to 70 of about 12,500 (256)

A Dual‐Functional Electrolyte Additive for Highly Reversible Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
This study introduces tetrabutylammonium bromide (TBAB) as a dual‐function additive for aqueous zinc‐ion batteries. TBAB disrupts the hydrogen‐bond network of water while TBA+ adsorbs on Zn to improve interfacial wettability and regulate Zn2+ flux, resulting in suppressed dendrite growth and parasitic reactions. This synergy extended the lifespan of Zn|
Shirui Zhang, Shixun Wang, Jianen Zhang, Jun Liu, Jinfeng Xie, Wentao Tang, Li Guan, He Huang, Qi Xue, Chunyi Zhi   +9 more
wiley   +1 more source

A Chirped Subwavelength Grating With Both Reflection and Transmission Focusing

IEEE Photonics Journal, 2013
A planar lens composed of a chirped subwavelength grating (CSG) structure with high numerical aperture (NA) was designed and analyzed in this paper. The reflectivity, transmission, and phase were calibrated as a function of the grating dimension using ...
Xiaomin Lv, Weibin Qiu, Jia-Xian Wang, Yuhui Ma, Jing Zhao, Mengke Li, Hongyan Yu, Jiaoqing Pan   +7 more
doaj   +1 more source

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Rigorous coupled-wave analysis of electromagnetic scattering from lamellar grating with defects

Optics Express, 2011
This paper proposes a spectral-domain approach to the electromagnetic scattering problem of lamellar grating with defects. The fields in imperfectly periodic structures have continuous spectra in the wavenumber space, and the main problem of the spectral-domain approach is connected to the discretization scheme on the wavenumber.
Watanabe, Koki, Pištora, Jaromír, Nakatake, Yoshimasa   +2 more
openaire   +3 more sources

A proposal of a perfect graphene absorber with enhanced design and fabrication tolerance

Scientific Reports, 2017
We propose a novel device structure for the perfect absorption of a one-sided lightwavve illumination, which consists of a high-contrast grating (HCG) and an evanescently coupled slab with an absorbing medium (graphene).
Sangjun Lee, Thang Q. Tran, Hyungjun Heo, Myunghwan Kim, Sangin Kim   +4 more
doaj   +1 more source

A broadband multilayered nonpolarization resonant reflector

IEEE Photonics Journal, 2015
A nonpolarization reflector constructed by a multilayered 1-D grating structure with a multisubpart profile is proposed and fabricated. Rigorous coupled-wave analysis for multilayered grating structure is adopted to theoretically investigate the ...
L. Huang, D. Liang, J. Zeng, Y. Xiao, H. Wu   +4 more
doaj   +1 more source

Light Diffraction From a Flexible Patterned Layer With Periodically Arranged Dimples

IEEE Photonics Journal, 2020
Patterns with periodically arranged dimples are fabricated by an inexpensive soft-imprint lithography technique on a flexible transparent polymer substrate. Excellent diffraction characteristics, with highly intense and fine features, are seen from these
Arpita Haldar, Vijaya Ramarao
doaj   +1 more source

Designing Stable Periodic Magnetization Textures by Tailoring Anisotropies and Applying Geometrical Transformation

Advanced Functional Materials, EarlyView.
This work explores the possibility to design stable periodic magnetization textures by transforming a 2D film into a rolled‐up 3D architecture and back. In case of an isotropic exchange‐biased layer architecture, the magnetization encoded in the 3D state evolves into a spin‐spiral pattern with controlled periodicity after unrolling.
Aman Singh, Ivan Soldatov, Rudolf Schäfer, Volker Neu   +3 more
wiley   +1 more source

Reducing complexity in photonic simulations: ZenScat — an efficient 2D RCWA solver

SoftwareX
We present a comprehensive solver implementation of a 2D Rigorous Coupled Wave Analysis (RCWA), tailored specifically for conformal thin multilayer devices and 2D photonic crystals with arbitrary interface profiles.
I. Lukosiunas, D. Gailevicius, K. Staliunas   +2 more
doaj   +1 more source