Results 131 to 140 of about 306,809 (340)
Advanced Optical Materials, EarlyView.A persistant NIR emission tail and feature at 923 nm is observed during photochemical singlet oxygen generation using various photosensitizers. While initially considered as singlet oxygen phosphorescence we show that it arises from the NIR‐tail of (visible) photosensitizer emission and the non‐linear increase of detector sensitivity.
Bjoern F. Hill +7 more
wiley +1 more source
Partially adaptive baeam-forming maethods based on genetic algorithms
Tongxin xuebao, 2006 An improved genetic algorithm（GA） for real time beam-forming of onboard planar array was presented. In or-der to meet the real-time processing requirements, this GA was combined with partially adaptive beam-forming tech-niques in the phase-only adaptive ...
JIN Jun1, WANG Hua-li1, LIU Miao2
doaj
World-wide aeronautical satellite communications [PDF]
INMARSAT decided to expand the spectrum covered by its new generation of satellites, INMARSAT-2, to include 1 MHz (subsequently increased to 3 MHz) of the spectrum designed for aeronautical use.
Smith, Keith, Wood, Peter
core +1 more source
Advanced Optical Materials, EarlyView.This study demonstrates that conjugated polyelectrolytes with tunable ionic density can act as effective interfacial layers in inverted PbS quantum dot photodiodes. By enhancing dipole orientation and defect passivation at the ITO/QD interface, the devices exhibit suppressed dark current, improved photocurrent, and a record near‐infrared detectivity of
Chanwoo Lim +8 more
wiley +1 more source
Satellite communications experiment for the Ontario air ambulance service [PDF]
A satellite communications experiment was conducted to develop a reliable voice communications system between paramedics and doctors at certain larger medical centers. The experiment used INMARSAT's Atlantic Ocean Region satellite which provides coverage
Butterworth, John S.
core +1 more source
Advanced Optical Materials, EarlyView.A silicon‐bridged MR‐TADF emitter named DPSi‐DBF‐BN incorporating dibenzofuran units achieve high photoluminescence efficiency, narrowband blue emission, and enhanced device stability. A blue hyper phosphorescent OLED delivers 24.5% EQE, CIE (0.137, 0.175), and improved LT80 compared to DABNA‐1 and t‐DABNA, demonstrating an effective molecular design ...
Kengo Kumada +9 more
wiley +1 more source
Tunable Multifunctional Terahertz Coding Metasurface for Polarization Manipulation
Advanced Photonics Research, EarlyView.Coding metasurfaces (CMs) offer versatile control over electromagnetic waves. Herein, a tunable multifunctional terahertz (THz) metasurface integrated with vanadium dioxide (VO2) is presented, enabling propagation‐phase manipulation of linearly polarized waves and hybrid‐phase control of circularly polarized waves.
Chunsheng Zhang +10 more
wiley +1 more source
The Basic Experiments in Ground-to-Satellite laser-based optical communications by Reflectors
, 2016 Toshiki Nakamura +7 more
openalex +1 more source
Choice of FDMA/SCPC access technique for aeronautical satellite voice system [PDF]
A worldwide aeronautical mobile satellite system is about to become operational. The system architecture and access methods have been debated extensively, resulting in the selection of Time Division Multiplexing/Time Division Multiple Access (TDM/TDMA ...
Smith, G. K.
core +1 more source