Results 121 to 130 of about 83,946 (258)

Enhanced Scintillation with Uncorrelated TL and OSL Signals in LiCaAlF6:Eu Nanoparticles Enables Unprecedented Multimodal Radiation Dosimetry

Advanced Optical Materials, EarlyView.
The graphical abstract illustrates the coexistence of independent OSL and TL signals, demonstrating that the material preserves TL information even after complete OSL zeroing, enabling a dual dosimetric readout within the same material. Abstract The development of multimodal dosimeters capable of preserving independent luminescent signals is a ...
Nancy Gabriela Chicango Arcos, João Victor Viera Lessa, Hayra do Prado Labaki, Éder José Guidelli   +3 more
wiley   +1 more source

A location-aware covert communication protocol in inter-environmental communication applications

Alexandria Engineering Journal
In recent decades, inter-environmental wireless communications (air-water) have received special attention from the military, industry, and scientific community given their important role in research, exploration, and tactical surveillance.
Sobhan Esmaeili, Jamal Ghasemi
doaj   +1 more source

Solution‐Processed Spin‐Polarized Light‐Emitting Diodes of Colloidal Quantum Wells and Magnetic Nanoparticles

Advanced Optical Materials, EarlyView.
All‐solution‐processed spin‐LEDs based on colloidal Fe3O4 nanoparticles and CdSe/CdZnS core/shell CQWs that allows for polarization modulation of electroluminescence are fabricated. With these devices, electrical injection of spin‐polarized carriers from the Fe3O4 nanoparticle layer into the CdSe/CdZnS CQWs is demonstrated, realizing circularly ...
Savas Delikanli, Arinjoy Bhattacharya, Betul Canimkurbey, Chang Huai, Amani Almutairi, Arman Najafi, Hilal Korkut, Farzan Shabani, Furkan Isik, James Pientka, Ibrahim Sarpkaya, Hao Zeng, Richard D. Schaller, Athos Petrou, Hilmi Volkan Demir   +14 more
wiley   +1 more source

Versatile Control of Spectral Emissivity in Mid‐Infrared Metasurfaces via Silicon Microstructuring

Advanced Optical Materials, EarlyView.
A family of metasurfaces is obtained very simply, solely through the structuration of a single‐crystal silicon surface, without any other material involved. Based on the infrared plasmonic behavior of highly doped silicon, further control of surface topography by micro‐ and nano‐structuration is found to enable an avenue of options toward tailoring its
Kirollos Ernest Matta, Elyes Nefzaoui, Ahmed A. Elsayed, Armande Hervé, Martine Gnambodoe‐CapoChichi, Frédéric Marty, Mazen Erfan, Yasser M. Sabry, Abdelkrim Khelif, Tarik Bourouina   +9 more
wiley   +1 more source

Communications in Space–Air–Ground Integrated Networks: An Overview

Space: Science & Technology
As an emerging vertical heterogeneous network architecture that integrates the satellite-based space networks, air networks, and traditional ground networks, space–air–ground integrated network (SAGIN) is developed to realize the Internet of everything ...
Kai Yang, Yichen Wang, Xiaozheng Gao, Chenrui Shi, Yuting Huang, Hang Yuan, Minwei Shi   +6 more
doaj   +1 more source

3D Microprinting of Structures with Lanthanide‐Based Fluorophores on Optical Fibers for Multiplexed Sensing

Advanced Optical Materials, EarlyView.
Incorporating lanthanide‐based fluorophores into commercial resists for femtosecond direct laser writing enables a novel platform for multiplexed sensing. Porous, periodic, and solid luminescent microstructures fabricated directly on optical fiber tips are presented.
Valese Aslani, Shaghayegh Baghapour, Stephen C. Warren‐Smith, Wenqi Zhang, Esmat Ebadati, Sally E. Plush, Alois M. Herkommer, Andrea Toulouse, Shahraam Afshar V.   +8 more
wiley   +1 more source

Substituent Effects on Cyanine Dyes Vary with Position and Chain Length

Advanced Optical Materials, EarlyView.
In cyanines, substituent effects vary as a function of substituent position and cyanine length. Electron‐donating‐ and ‐withdrawing groups at meso‐ and α‐positions of 4n+1/4n−1 long cyanines (n = 1, 2, 3…) cause opposing, hypsochromic and bathochromic shifts of the 1st UV–vis absorption bands.
David Dunlop, Rebecca Strada, Peter Šebej   +2 more
wiley   +1 more source

Ultrabroadband Excitation of Hot Carriers in Plasmonic Nanorods Revealed by Two‐Dimensional Electronic Spectroscopy

Advanced Optical Materials, EarlyView.
This work dissects the ultrafast response of polydisperse plasmonic nanorods using two‐dimensional electronic spectroscopy, uniquely combining temporal and spectral resolution. Our ultrabroadband pulses cover both transverse and longitudinal nanorods’ resonances, revealing sub‐200‐fs dynamics and distinct broadening mechanisms.
Andrea Schirato, Mattia Russo, Luca Moretti, Alessandro Molinelli, Laura Polito, Filippo Rossi, Giulio Cerullo, Giuseppe Della Valle, Margherita Maiuri   +8 more
wiley   +1 more source

Infrared Colloidal Quantum Dot Edge Emitting Lasers Integrated on Silicon

Advanced Optical Materials, EarlyView.
In this work, the first monolithic integration of Pb‐chalcogenide CQDs in an edge‐emitting DFB laser cavity onto a Si/SiO2 substrate has been demonstrated. The optimizations of SiO2 layer thickness, engineering of the grating duty cycle, and implementing λ/4 phase shift resulted in the achievement of spectrally pure, single‐mode lasing at 1650 nm with ...
Hamed Dehghanpour Baruj, Guy L. Whitworth, Nima Taghipour, Mariona Dalmases, Debranjan Mandal, Gerasimos Konstantatos   +5 more
wiley   +1 more source

Performance Analysis of a Sound-Based Steganography Wireless Sensor Network to Provide Covert Communications

Telecom
Given the existence of techniques that disrupt conventional RF communication channels, the demand for innovative alternatives to electromagnetic-based communications is clear.
Ariadna I. Rodriguez-Gomez, Mario E. Rivero-Angeles, Izlian Y. Orea Flores, Gina Gallegos-García   +3 more
doaj   +1 more source