Results 91 to 100 of about 232,054 (254)

Miniaturized Multi-Platform Free-Space Laser-Communication Terminals for Beyond-5G Networks and Space Applications

Photonics
Beyond-5G (B5G) technology plays a pivotal role in the next generation of communication infrastructure to support the future Society 5.0, a concept introduced in the 5th Basic Plan for Science and Technology by the Japanese Cabinet to define the long ...
Alberto Carrasco-Casado, Koichi Shiratama, Dimitar Kolev, Fumie Ono, Hiroyuki Tsuji, Morio Toyoshima   +5 more
doaj   +1 more source

From Molecular Design to Optical Anisotropy: Orientation Control in BODIPY Langmuir‐Blodgett Films

Advanced Optical Materials, EarlyView.
The supramolecular organization of amphiphilic boron‐dipyrromethene (BODIPY) dyes in Langmuir–Blodgett monolayers is shown to govern their optical anisotropy. By correlating nanoscale imaging and angle‐resolved spectroscopy, we reveal symmetry‐driven control of transition dipole orientation, enabling either in‐plane or out‐of‐plane optical responses ...
Lilia Huynh, Jason Bessonnet, Lucas Frédéric, Céline Fiorini‐Debuisschert, Simon Vassant, Hélène Fensterbank, Emmanuel Allard, David Kreher, Fabrice Charra, Nicolas Fabre   +9 more
wiley   +1 more source

Experimental Validation of the Attack-Detection Capability of Encrypted Control Systems Using Man-in-the-Middle Attacks

IEEE Access
In this study, the effectiveness of encrypted control systems in detecting attacks is experimentally demonstrated using a networked control system testbed that allows for man-in-the-middle (MITM) attacks.
Akane Kosugi, Kaoru Teranishi, Kiminao Kogiso   +2 more
doaj   +1 more source

Spectral Compensation Strategy for Radical‐Induced Dye Degradation in Liquid Crystal Polymer Composites

Advanced Optical Materials, EarlyView.
A spectral compensation strategy is introduced to overcome radical‐induced degradation of dichroic dyes during UV photopolymerization. By incorporating a complementary photochromic liquid‐crystalline dye, broadband optical attenuation is preserved without disrupting photopolymerization, enabling high‐contrast and durable dye‐doped liquid crystal ...
Wei‐Hsien Wu, Li‐Min Chang, Yu‐Hsuan Peng, Hsiu‐Hui Chen, Chun‐Ta Wang   +4 more
wiley   +1 more source

Energy‐Transfer‐Driven Programmable Luminescence in Bi3+‐Eu3+ Co‐Doped Na3Ca2TaO6 Phosphors Toward Multifunctional Optical Applications

Advanced Optical Materials, EarlyView.
Energy transfer from broadband Bi3+ sensitizers to Eu3+ emitters enables composition‐, excitation‐, and temperature‐dependent luminescence in Na3Ca2TaO6. These controllable optical states support ratiometric thermometry and excitation‐selective, filter‐assisted information decoding in flexible phosphor–polydimethylsiloxane films, demonstrating how ...
Weiwei Xiang, Yuxiang Li, Jae Su Yu
wiley   +1 more source

Confinement‐Induced Nonlocality and Optical Nonlinearity of Transdimensional Titanium Nitride Films in the Epsilon‐Near‐Zero Region

Advanced Optical Materials, EarlyView.
The epsilon‐near‐zero (ENZ) effect in metals emerges only in nanometer‐scale films with exceptional optical quality. Titanium nitride (TiN) films grown by molecular beam epitaxy retain high crystallinity down to 2 nm and exhibit dramatically enhanced nonlinear optical responses near the ENZ region.
Fan‐Ting Tseng, I‐Hung Ho, Ting‐Jui Kuo, Shangjr Gwo, Igor V. Bondarev, Hyeyoung Ahn   +5 more
wiley   +1 more source

Nanopatterned Dual‐Carbon‐Dot Photonic Films With Enhanced Light Outcoupling

Advanced Optical Materials, EarlyView.
Nanoimprinted dual‐carbon‐dot/PVA films combine composition‐tunable blue–green emission with grating‐mediated directional light outcoupling. Water‐processable B‐CD and G‐CD composites are patterned by drying‐assisted nanoimprinting, producing angle‐selective emission peaks that follow the first‐order diffraction condition and exhibit reference ...
Gyudam Jeon, Heetae Ahn, Taeguen Kim, Na Young Ha   +3 more
wiley   +1 more source

Cascading Spin‐Orbitronic Terahertz Emission in Ferromagnet/Nonmagnet Bilayers

Advanced Optical Materials, EarlyView.
While the initial generation mechanism of picosecond orbital currents remains elusive, we reveal a cascading spin–orbital transport mechanism that induces optically driven terahertz emission in ferromagnet/nonmagnet heterostructures. Using a ferromagnet with strong spin–orbit coupling, we identify a thickness‐driven transition from spin‐dominated to ...
Younghun Kim, Pinki Yadav, Byungwoo Son, Jooyoung Heo, Sejin Shin, Do‐Kyeong Ko, Rahul Mishra, Kyusup Lee   +7 more
wiley   +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

Enhanced Operational Stability of Carbene‐Metal‐Amide Organic Light‐Emitting Diodes by Reducing Electron Accumulation on the Emitter

Advanced Optical Materials, EarlyView.
Carbene‐metal‐amide (CMA) organic LEDs suffer from poor stability despite submicrosecond excited‐state lifetimes. Here, we show that electron accumulation on CMA emitters triggers bond cleavage, while poor electron transport amplifies OLED instability.
Rishabh Saxena, J. Terence Blaskovits, Alexander C. Brannan, Alexander Romanov, Seah Ling Kuan, Hans Joachim Räder, Denis Andrienko, Paul W. M. Blom, Gert‐Jan A. H. Wetzelaer   +8 more
wiley   +1 more source