Results 211 to 220 of about 8,543,121 (289)

Line-of-Sight Probability Analysis of Underground Mining Visible Light Communication Diversity Schemes Under Random Receiver Orientation. [PDF]

Sensors (Basel)
Solís J, Sánchez I, Azurdia-Meza C, Játiva PP, Zabala-Blanco D, Dehghan Firoozabadi A.   +5 more
europepmc   +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

Development of visible light communications: emerging technology and integration aspects [PDF]

, 2010
Ghassemlooy, Zabih, Burton, Andrew, Haigh, Paul, Le Minh, Hoa   +3 more
core  

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

Modeling and Performance Study of Vehicle-to-Infrastructure Visible Light Communication System for Mountain Roads. [PDF]

Sensors (Basel)
Yang W, Liu H, Cheng G.
europepmc   +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

Unmanned Aerial Vehicle-Assisted Terahertz-Visible Light Communication Systems: An In-Depth Performance Analysis. [PDF]

Sensors (Basel)
Rajahrajasingh H, Jayakody DNK.
europepmc   +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

Enhancing Security in Visible Light Communication: A Tabu-Search-Based Method for Transmitter Selection. [PDF]

Sensors (Basel)
Shi G, Cheng W, Gao X, Wei F, Zhang H, Wang Q.   +5 more
europepmc   +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