Results 311 to 320 of about 3,261,865 (370)

Prevalence and association of uncorrected refractive error among Chinese adolescents: a cross-sectional study. [PDF]

BMC Public Health
Zhou Y, Chen X, Huang X, Li L, Zhu Y, Cai Q, Song Y, Sun ZM, Lu P.   +8 more
europepmc   +1 more source

A Multi‐Resonant Tunable Fabry‐Pérot Cavity for High Throughput Spectral Imaging

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study introduces a multi‐resonant tunable Fabry‐Pérot filter for high throughput spectral imaging. With a spectral resolution of 10 nm and a switching time of 23 ms, this compact and low‐cost device possesses better spectral imaging accuracy in poor light conditions while maintaining over six times higher optical throughput than standard liquid ...
Xiao Wu, Zijian Lin, Shige Tang, Xiao Chen, Tingbiao Guo, Sailing He   +5 more
wiley   +1 more source

Topology Optimization Enables Freeform Matrix Fourier Optics

Advanced Optical Materials, EarlyView.
A topology‐optimized freeform metasurface is designed and fabricated to realize matrix Fourier optics, enabling the diffraction of multiple polarization states into distinct far‐field orders. By combining forward design with gradient‐based inverse optimization, high polarization contrast of up to 98.7% is achieved.
Yu‐Tzu Liu, Yun‐Chien Wu, Chang‐Yi Lin, Huan‐Teng Su, Yu‐Qi Zhou, Yao‐Wei Huang   +5 more
wiley   +1 more source

Enhanced THz Emission From Ultrathin Ta/Fe/Pt Spintronic Trilayers

Advanced Optical Materials, EarlyView.
Ultrathin Ta/Fe/Pt spintronic trilayers on MgO(100) substrates generate intense terahertz (THz) emission under femtosecond laser pulse excitation. Constructive interference of the emitted THz waves from Ta and Pt layers is maximized through crystallographic engineering of the Ta layer into a high‐resistivity fcc phase and optimization of the trilayer ...
Evangelos Th. Papaioannou, Laura Scheuer, Garik Torosyan, George P. Dimitrakopulos, Sławomir Kret, Alina D. Crisan, Ovidiu Crisan, René Beigang, Thomas Kehagias   +8 more
wiley   +1 more source

Quantitative analysis of retinal vascular parameters changes in school-age children with refractive error using artificial intelligence. [PDF]

Front Med (Lausanne)
Liu L, Zhong L, Zeng L, Liu F, Yu X, Xie L, Tan S, Zhang S, Jiang YP.   +8 more
europepmc   +1 more source

C2LI: Enhancing Structural Color Sensing and Imaging via Complementary Color Laser Illumination

Advanced Optical Materials, EarlyView.
This article introduces complementary color laser illumination (C2LI) and demonstrates it to be an effective approach for engaging the visual system to enhance perceptual sensitivity and chromatic contrast. This enhances a human user's ability to detect subtle differences in sample or medium characteristics, enabling novel applications in colorimetric ...
Tomoshree Dash, Estevao Marques Dos Santos, Tahmid H. Talukdar, Judson D. Ryckman   +3 more
wiley   +1 more source

Differences in Ocular Axial Length Between Genders and Refractive Error Groups: A Cross-Sectional Study at the Yaoundé Central Hospital, Cameroon. [PDF]

Cureus
Konlack Mekontso JG, Dohvoma VA, Ebana Mvogo SR, Nguefang Tchoukeu GL, Mbessoh Kengne UI, Ndzernyuy Dubila F, Tamhouo Nwabo FL, Ebana Mvogo C.   +7 more
europepmc   +1 more source

Direct Growth of Rectangular 2D Layered Metal‐Halide Perovskite Microcrystal Photonic Cavities on Functional Substrates

Advanced Optical Materials, EarlyView.
A simple and scalable method to fabricate 2D layered metal halide microcrystals with rectangular shape, extremely flat surfaces, and submicron thickness is presented. The growth occurs in evaporating droplets on planar substrates, which enables the fabrication of the microcrystals directly on functional surfaces. The microcrystals demonstrate excellent
Martina Borreani, Sudhir Kumar Saini, Alexander Schleusener, Roman Krahne   +3 more
wiley   +1 more source

Regional/ethnic differences in ocular axial elongation and refractive error progression in myopic and non-myopic children. [PDF]

Ophthalmic Physiol Opt
Naduvilath T, He X, Saunders K, Demir P, Leighton R, McCullough S, Tran H, Ha T, Macedo AF, Xun X, Sankaridurg P, Tahhan N.   +11 more
europepmc   +1 more source

Development of High‐Performance Multilayer Monochromators

Advanced Optical Materials, EarlyView.
Detailed insights into the optical and multilayer design of Double Multilayer Monochromators (DMM) are presented and fully characterized, including key optimization strategies and solutions to fabrication challenges. By integrating in‐house Ion Beam Figuring and a high uniformity multilayer coating process, the developed DMMs achieve high reflectivity,
Wadwan Singhapong, Arindam Majhi, Wai Jue Tan, Vishal Dhamgaye, Riley Shurvinton, Paresh Pradhan, Igor Dolbnya, Lucia Alianelli, Chris Bowen, Alexander J. G. Lunt, Hongchang Wang, Kawal Sawhney   +11 more
wiley   +1 more source