Results 101 to 110 of about 6,305 (224)

A RT-FDTD method of analyzing wireless propagation characteristics in underground mine

Scientific Reports
Efficient communication is crucial in reducing injuries and fatalities in coal mine accidents, necessitating the study of simulation methods for mine communication.
Xiaoyan Song, Gaomin Zhang, Chang Zhou
doaj   +1 more source

Breaking the Size‐Tolerance Trade‐off in Vertical Couplers via Adjoint‐Based Inverse Design

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
A physics‐guided inverse design framework combines physical insight with adjoint optimization by placing dense control points in the phase‐near‐matched region. This guided strategy yields a 20 μm III–V‐on‐silicon coupler with 98.11% efficiency, > 80% efficiency at ± $\mathit{\pm }$ 1.1 μm misalignment, and record high tolerance per unit length ...
Ruiqi Liu, Suo Wang, Zeqiu Liu, Shiyu Mei, Jiahui Chi, Haiyang Yu, Yulian Cao, Jianguo Liu   +7 more
wiley   +1 more source

End‐to‐End Deep Learning Framework for Freeform Metasurfaces via Non‐Uniform Rational B‐Splines Meta‐Atoms

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
This work presents a NURBS‐enabled metasurface design framework that combines freeform meta‐atom parameterization with Transformer‐based deep learning. The unified mathematical representation expands geometric degrees of freedom while enabling efficient optical‐response prediction and inverse design.
Kaipeng Liu, Junliang Jia, Kun Li, Yuanjian Wan, Runlin Zhou, Xuyang Chen, Chao Wang, Zhixiang Huang, Jiaxin Li, Gang Gao, Pei Zhang, Longqiu Li   +11 more
wiley   +1 more source

Broadband Electromagnetic Field Prediction at Unseen Wavelengths via Physics‐Guided Neural Operators

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
A physics‐guided neural operator is trained on electromagnetic field distributions at discrete wavelengths across diverse nanophotonic structures. At inference, given any permittivity map and query wavelength, the model predicts continuous broadband electric‐field distributions with full‐wave accuracy, including wavelengths unseen during training ...
Joonhyuk Seo, Chanik Kang, Dongjin Seo, Haejun Chung   +3 more
wiley   +1 more source

The study of 3D FDTD modelling of large-scale Bragg gratings validated by experimental measurements

JPhys Photonics
This study discusses the importance of accurately calculating the optical response of Bragg gratings and the challenges associated with the 3D finite-difference time-domain (FDTD) method for simulating large-scale structures. The Bragg grating section in
Yasmin Rahimof, Igor A Nechepurenko, M R Mahani, Aleksei Tsarapkin, Andreas Wicht   +4 more
doaj   +1 more source

A Hybrid Computational Framework for PCF‐based SPR Sensor With Machine Learning and xAI

Advanced Materials Interfaces, Volume 13, Issue 15, 4 August 2026.
A photonic crystal fiber‐based surface plasmon resonance (SPR) sensor integrating rectangular air holes along with conventional circular air holes achieves exceptional wavelength sensitivity of 15,000 nm/RIU across a broad refractive index range of 1.31–1.39. Integrated machine learning with explainable AI (xAI) models achieves high prediction accuracy
Mahabur Rahman Fahim, Sudeep Paul, Musrat Jahan, Md Abu Shahid Chowdhury   +3 more
wiley   +1 more source

High Efficiency 3‐Tandem Top Emitting Pure‐Blue OLEDs Beyond the BT.2020 Blue Standard

Advanced Optical Materials, Volume 14, Issue 29, 7 August 2026.
We report a high‐efficiency ultrapure‐blue 3‐tandem TEOLED through synergistic optimization of a narrowband MR‐TADF emitter, Purcell‐based cavity design, and pure Ag cathode/CPL structure. The optimized device achieves 463 nm emission, an ultranarrow FWHM of 10 nm, CIE y of 0.040, and a blue index of 1,596 cd/A/y, surpassing the BT.2020 blue standard ...
Jun Hyeog Oh, Se Chan Cha, Hyunmin Cho, Hyeong Geun Jo, Nisha Vergineya S, Jang Hyuk Kwon   +5 more
wiley   +1 more source

Carrier Funneling and Luminescent Collimation for Extreme Diffuse Light Concentration

Advanced Photonics Research, Volume 7, Issue 8, August 2026.
Luminescent concentrators show performance millions of times below their thermodynamic limit because of their inefficient design. Carrier funneling combined with luminescent collimation decouples concentration from propagation distance, breaking the practical limitation of current approaches.
D. Methorst, E. C. Garnett
wiley   +1 more source

Gold Nano Biosensing Technologies for Early Breast Cancer Diagnosis: Recent Progress and Future Perspectives

Advanced Sensor Research, Volume 5, Issue 8, August 2026.
Overview of gold nanomaterial‐based biosensing strategies for early breast cancer diagnosis. The figure illustrates the detection of multiple biomarker classes, including proteins, nucleic acids, circulating tumor cells (CTCs), and exosomes from biological samples such as blood, serum, and cell lysates using electrochemical, SPR, SERS, fluorescence ...
Akanksha Pawar, Muskan Leharwani, Deena Mohammed Bukhary, Garima Gupta, Khang Wen Goh, Amirhossein Sahebkar, Prashant Kesharwani   +6 more
wiley   +1 more source

Engineering Disordered Many‐Particle Plasmonic Nanoclusters for Wafer‐Scale Uniform and Giant Electromagnetic Field Enhancement

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
This work presents a lithography‐ and etching‐free dewetting strategy that assembles many‐particle gold nanostructures into uniform plasmonic substrates at the wafer scale. By forming satellite nanoparticles between larger ones, the method achieves giant and highly reproducible electromagnetic enhancement.
Minjun Kim, Vasanthan Devaraj, Hyeon‐Seok Seo, Seong‐Jae Eom, Jeong‐Su Lee, Donghan Lee, Min Yong Jeon, Thomas Zentgraf, Jong‐Min Lee   +8 more
wiley   +1 more source