Results 61 to 70 of about 53,362 (265)

Empirical Studies on Merging Characteristics in Temporary Highway Work Zones with Different Traffic States and Layouts

Algorithms
Vehicles conduct mandatory lane changes to merge into the open lanes in temporary highway work zones, and the merging characteristics have been widely studied over the past decades.
Yanli Jiao, Xiaoyue Zhu, Xinkai Ji, Long Zhang, Zhibin Li   +4 more
doaj   +1 more source

On‐Chip Photonic Neural Network Architectures

Advanced Optical Materials, EarlyView.
This review presents a comprehensive overview of on‐chip photonic neural network architectures, covering key photonic building blocks, representative network types, and emerging applications. Recent advances, implementation challenges, and future directions are examined, highlighting the potential of integrated photonics to enable ultrafast, energy ...
Seokjin Hong, Berkay Neseli, Seungyeon Cho, Seungsoo Lee, Yeonjun Kim, Seungyoon Choi, Hyo‐Hoon Park, Hamza Kurt   +7 more
wiley   +1 more source

Sensitivity of starting force, piston mass, and load pressure in nonlinear electro–hydro–mechanical hybrid power systems

Next Energy
Global energy conversion systems increasingly rely on highly integrated thermo–electro–mechanical processes, in which nonlinear vibration strongly affects efficiency, stability, and power density.
Qinglong Wu, Yepei Zhang, Bowen Su, Yaodong Wang, Chenheng Yuan   +4 more
doaj   +1 more source

Tailoring Amine Substitution in Fluorene and Dibenzothiophene: A Molecular Strategy for Ultralong Organic Phosphorescence

Advanced Optical Materials, EarlyView.
Tailored amine substitution in fluorene and dibenzothiophene derivatives enables systematic control of excited‐state properties and triplet population. Combined photophysical studies, TD‐DFT calculations and time‐resolved EPR reveal how charge‐transfer character, sulfur‐induced spin–orbit coupling and triplet manifold engineering cooperate to promote ...
Francesco Ruighi, Gianluca Accorsi, Eduardo Fabiano, Lorenzo Franco, Alessandro Agostini, Samuel Zatta, Leonard E. Cleve, Federica Angilè, Francesco Paolo Fanizzi, Gustavo Fernández, Agostina L. Capodilupo   +10 more
wiley   +1 more source

Regioselective π‐Extension of Helical PAHs: Tuning Energy Gaps and Excited‐State Dynamics Directed by Clar's Sextet Migration

Advanced Optical Materials, EarlyView.
Central and terminal ring fusions of per‐peri‐perbenzo[7]helicene (PB[7]H) yield novel helical polycyclic aromatic hydrocarbons (HPAHs). The migration of Clar's aromatic sextets governs the inner‐rim stiffness. This topology‐directed strategy bridges the discrete optical gaps of homologous series. Transition moment density (TMD) analysis visualizes the
Zhibo Liu, Zheng Zhang, Hikaru Sotome, Takashi Hirose   +3 more
wiley   +1 more source

Comprehensive analysis of renewable hybrid energy systems in highway tunnels

Frontiers in Energy Research
In order to explore the feasibility of a renewable hybrid energy system in highway tunnels, a scenario-coupled construction method for a highway tunnel renewable hybrid energy system is proposed.
Zhen Liao, Yufei Zhang, Xin Zhao, Yubiao Zhang, Manhu Liu, Jinlong Hong, Hao Cao   +6 more
doaj   +1 more source

Enhancement of Circular Dichroism in Chiral Dielectric Metasurfaces by Ion Beam Irradiation

Advanced Optical Materials, EarlyView.
Ion beam irradiation enables post fabrication tuning of dissipative losses in chiral dielectric metasurfaces composed of C4 symmetric silicon nanostructures. By tailoring the absorption toward critical coupling condition, circular dichroism is enhanced from 0.70 to 0.85, demonstrating a versatile route for maximizing optical chirality and polarization ...
Anna Fitriana, Katsuya Tanaka, Lukas Raam Jaeger, Martin Hafermann, Thomas Pertsch, Carsten Ronning, Isabelle Staude   +6 more
wiley   +1 more source

Revealing Mechanofluorochromism and Intricate Long‐lived Decay Pathways in Keto‐Coumarin‐Based Molecular Crystals

Advanced Optical Materials, EarlyView.
Donor–acceptor organic emissive materials show great promise in cutting‐edge optical applications. Herein, the photophysical properties of two keto‐coumarin organic materials are studied in detail. Both show mechanofluorochromism, but a diphenylamine donor derivative exhibits intricate decay pathways in the crystal form, including decays ranging from ...
Peter W. McDonald, Subhadeep Das, Arnab Mandal, Gilles Clavier, Clémence Allain, Abhijit Patra, Rémi Métivier   +6 more
wiley   +1 more source

ModuNet: A Modulated Graph-Token Network for Spatio-Temporal Traffic Flow Forecasting

IEEE Access
Traffic flow forecasting, a critical component of intelligent urban traffic management, faces challenges such as complex spatio-temporal dependencies and diverse road topologies.
Tianxing Zhang, Yingping Chen, Dehua Wu, Kewei Zhu   +3 more
doaj   +1 more source

Gain Narrowing in Low‐Dimensional PEA:CsPbBr3: Superfluorescence versus Amplified Spontaneous Emission

Advanced Optical Materials, EarlyView.
Superfluorescence is a cooperative emission process not scaling with sample volume. Amplified spontaneous emission is a collective process scaling with sample volume and is enhanced by waveguiding. Both manifest in a narrow emission peak. Choosing the right substrate suppresses waveguiding and demonstrates that the emission feature observed in PEA ...
Pirmin Tischler, Valerie Y. Horter, Yang Li, Holger Geßwein, Weimu Xu, Renjun Guo, Orlando Torres Perales, Julian Petry, Ulrich W. Paetzold, Nils W. Rosemann, Uli Lemmer   +10 more
wiley   +1 more source