Results 111 to 120 of about 592,481 (296)

Structural Modulation of Charge Transfer in Donor–Acceptor Systems: Effects of Donor Type and Connectivity

open access: yesAdvanced Optical Materials, EarlyView.
A coherent phthalimide acceptor platform with planar (Cz—carbazole) and spiro‐type (SAF—spiroacridine fluorene) donors enables systematic tuning of donor geometry and coupling, driving the evolution of excited‐state topology from classical CT‐TADF and fluorescence/RTP to CT‐driven and LE‐assisted TADF with OLED efficiencies ≈ 36%.
Christopher Anton Wallerius   +8 more
wiley   +1 more source

The 3D Gaussian Splatting SLAM System for Dynamic Scenes Based on LiDAR Point Clouds and Vision Fusion

open access: yesApplied Sciences
This paper presents a novel 3D Gaussian Splatting (3DGS)-based Simultaneous Localization and Mapping (SLAM) system that integrates Light Detection and Ranging (LiDAR) and vision data to enhance dynamic scene tracking and reconstruction.
Yuquan Zhang   +3 more
doaj   +1 more source

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

open access: yesAdvanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah   +2 more
wiley   +1 more source

A significant wave height prediction method combining VMD decomposition and the GVSAO-CNN-BiGRU-SA model

open access: yesFrontiers in Marine Science
To improve the accuracy and robustness of significant wave height prediction under complex marine conditions, a multi-strategy Snow Ablation Optimization (GVSAO) model based on the Good Point Set Initialization Strategy (G), Cyclic Oscillation Mutation ...
Zongquan Ying   +15 more
doaj   +1 more source

Pixelated Laser with Tailored Emission Spectrum Photopatterned by Digital Holographic Microscopy

open access: yesAdvanced Optical Materials, EarlyView.
Azobenzene‐based surface‐relief gratings inscribed via DHM‐integrated holographic lithography enable programmable pixelated DFB laser architectures. This approach allows independent control of grating parameters across a 2D array, enabling spatially tailored emission spectra.
Sudharsana Bhashyam Pillailokam   +2 more
wiley   +1 more source

Role of Globalization after the Crisis [PDF]

open access: yes
Over many centuries, human societies across the globe have established progressively closer contacts. Recently, the pace of global integration has dramatically increased.
Corneliu CIRSTEA
core  

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

open access: yesAdvanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin   +2 more
wiley   +1 more source

Intramolecular FRET Cascades Enable Small Efficiency Roll‐Off in Solution‐Processed OLEDs

open access: yesAdvanced Optical Materials, EarlyView.
This work highlights how an intramolecular FRET design strategy in solution‐processable MR‐TADF emitters enables narrowband emission, high PLQY, and efficient exciton harvesting. The resulting hyperfluorescent solution‐processed OLEDs reach up to 20.7% EQEmax with minimal efficiency roll‐off even at 10 000 cd m−2, demonstrating strong potential for ...
Mahni Fatahi   +4 more
wiley   +1 more source

Comparative Analysis of Transport and Communications Korea and Australia [PDF]

open access: yes
This paper examines the output and productivity performance of the Transport and Communication sector in South Korea and Australia, from 1990 to 1999. The aim of the paper is two -fold.
Lee, Boon, Shepherd, William
core   +1 more source

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