Results 81 to 90 of about 41,134 (250)

Robust Precoding for Multi-User Visible Light Communications with Quantized Channel Information. [PDF]

Sensors (Basel), 2022
Muñoz O, Pascual-Iserte A, San Arranz G.   +2 more
europepmc   +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

Recent Advances in Micro-LEDs Having Yellow-Green to Red Emission Wavelengths for Visible Light Communications. [PDF]

Micromachines (Basel), 2023
James Singh K, Huang WT, Hsiao FH, Miao WC, Lee TY, Pai YH, Kuo HC.   +6 more
europepmc   +1 more source

Electrohydrodynamically Driven Broadband and Color‐Shifting in Cholesteric Liquid Crystals

Advanced Optical Materials, EarlyView.
Ion‐driven electrohydrodynamic effects enable dynamic photonic bandgap modulation in cholesteric liquid crystals under low‐frequency AC driving. By regulating ion‐mediated disturbance of the helical structure, this approach produces two reversible optical responses: rapid color shifting across the visible spectrum and broadband reflection spanning the ...
Cheng‐Kuan Wu, Jin‐Yu Chen, Li‐Min Chang, Cheng‐Chang Li, Kuan‐Wu Lin, Duan‐Yi Guo, Tsung‐Hsien Lin   +6 more
wiley   +1 more source

New Bounds on Capacity Region of Multiple Access Channels in Visible Light Communications. [PDF]

Entropy (Basel), 2022
Yang R, Li B, Ma S, Wu Y, Li Z, Li S.
europepmc   +1 more source

Flexible and Scalable 2D/3D Tin‐Based Perovskite Photodetectors via Inkjet Printing

Advanced Optical Materials, EarlyView.
Lead‐free tin‐based perovskite films are successfully fabricated via scalable inkjet printing on rigid and flexible substrates. Incorporating high‐purity precursors and dual‐layer encapsulation minimizes defects and eliminates oxidation. The resulting photodetectors demonstrate high responsivity, persistent photoconductivity, and excellent 30 day ...
Giovanni Vescio, Vladimir S. Chirvony, Isaac Suárez, Sandra Soriano, Jesús Sanchez‐Diaz, Wiktor Żuraw, Łukasz Przypis, Senol Öz, Kenneth Lobo, Sergi Hernández, Albert Cirera, Iván Mora‐Seró, Blas Garrido, Juan P. Martínez‐Pastor   +13 more
wiley   +1 more source

Editorial to the Special Issue on "Visible Light Communications, Networking, and Sensing". [PDF]

Sensors (Basel), 2021
Zvánovec S, Ghassemlooy Z, Perez-Jimenez R, Alves LN.   +3 more
europepmc   +1 more source

DRL-Based IRS-Assisted Secure Hybrid Visible Light and mmWave Communications

IEEE Open Journal of the Communications Society
This paper explores a new advancement in physical layer security (PLS) techniques, focusing on the integration of Intelligent Reflecting Surfaces (IRS).
Danya A. Saifaldeen, Abdullatif M. Al-Baseer, Bekir S. Ciftler, Mohamed M. Abdallah, Khalid A. Qaraqe   +4 more
doaj   +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

Experimental Demonstration of a Visible Light Communications System Based on Binary Frequency-Shift Keying Modulation: A New Step toward Improved Noise Resilience. [PDF]

Sensors (Basel), 2023
Beguni C, Done A, Căilean AM, Avătămăniței SA, Zadobrischi E.   +4 more
europepmc   +1 more source