Results 31 to 40 of about 44,451 (275)

Band Alignment in In‐Oxo Metal Porphyrin SURMOF Heterojunctions

Advanced Functional Materials, EarlyView.
Porphyrin core metalation in indium‑oxo SURMOFs enables systematic tuning of band edge positions without altering the crystal structure. First‑principles calculations reveal type‑I and type‑II heterostructures as well as multi‑junction energy cascades, establishing a modular strategy for exciton funneling and charge separation in optoelectronic ...
Puja Singhvi, Nina Vankova, Thomas Heine
wiley   +1 more source

Progress in satellite quantum key distribution

, 2017
Quantum key distribution (QKD) is a family of protocols for growing a private encryption key between two parties. Despite much progress, all ground-based QKD approaches have a distance limit due to atmospheric losses or in-fibre attenuation.
Arrazola, Juan Miguel, Bedington, Robert, Ling, Alexander   +2 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Research on Key Technologies of Elastic Satellite Optical Network Based on Optical Service Unit

Applied Sciences
With the advent of 6G technologies, satellite communication networks are in urgent need of innovative bearer technologies to meet the demands of government and enterprise private lines as well as computing power networks.
Wei Zhou, Bingli Guo, Qingsong Luo, Boying Cao, Bitao Pan   +4 more
doaj   +1 more source

Current optical technologies for wireless access [PDF]

, 2009
The objective of this paper is to describe recent activities and investigations on free-space optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th programme and IC 0802 a COST action.
Awan, Muhammad, Brandl, P., Capsoni, Carlo, Ghassemlooy, Zabih, Javornik, Tomaz, Kandus, Gorazd, Leitgeb, Erich, Nebuloni, R., Sheikh Muhammed, S.   +8 more
core  

Novel ring resonator-based integrated photonic beamformer for broadband phased array receive antennas - part I: design and performance analysis [PDF]

, 2010
A novel optical beamformer concept is introduced that can be used for seamless control of the reception angle in broadband wireless receivers employing a large phased array antenna (PAA).
Bentum, Mark J., Burla, Maurizio, Etten, Wim van, Huizinga, Adriaan, Jorna, Pieter, Marpaung, David A.I., Meijerink, Arjan, Meijerink, Roland, Roeloffzen, Chris G.H., Verpoorte, Jaco, Zhuang, Leimeng   +10 more
core   +3 more sources

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

Advancing OAM-Based FSO Systems: Tackling Pointing Errors for Next-Generation Space and Terrestrial Links

IEEE Photonics Journal
Orbital Angular Momentum (OAM)-based Free-Space Optical (FSO) communication systems offer immense potential for high-capacity, secure links, but their performance is highly sensitive to pointing errors. This paper provides a comprehensive analysis of OAM
Mohammad Taghi Dabiri, Meysam Ghanbari, Mazen Hasna   +2 more
doaj   +1 more source

Towards Quantum Communication from Global Navigation Satellite System

, 2018
Satellite-based quantum communication is an invaluable resource for the realization of a quantum network at the global scale. In this regard, the use of satellites well beyond the low Earth orbits gives the advantage of long communication time with a ...
Agnesi, Costatino, Bianco, Giuseppe, Calderaro, Luca, Dequal, Daniele, Luceri, Vincenza, Santamato, Alberto, Schiavon, Matteo, Vallone, Giuseppe, Vedovato, Francesco, Villoresi, Paolo   +9 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source