Results 221 to 230 of about 1,129,195 (294)

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source

Experimental observation of a radio frequency plasmonic gradient resonance in water. [PDF]

Sci Rep
Smolyaninov II, Balzano Q, Dale N, Smolyaninova VI, Young D.   +4 more
europepmc   +1 more source

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

Advanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin, Michele Amato, Maurizia Palummo   +2 more
wiley   +1 more source

Optimizing the Egli Model for Vehicular Ultra-Shortwave Communication Using High-Resolution Remote Sensing Satellite Imagery. [PDF]

Sensors (Basel)
Zhang G, Chen P, Wu F, Qin Y, Xu Q, Li T, Zhang S, Lu H.   +7 more
europepmc   +1 more source

Phototunable Polarization Volume Gratings Driven by Chiral Hydrazone Switches

Advanced Optical Materials, EarlyView.
Chiral hydrazone photoswitches incorporated into polarization volume gratings enable light‐driven, reversible modulation of optical properties. UV and blue light irradiation reversibly alter the hydrazone isomer ratio, leading to tunable diffraction efficiency and spectral response across the visible spectrum.
Artem Boichuk, Lauri Uosukainen, Indu Bala, Ivan Aprahamian, Arri Priimagi   +4 more
wiley   +1 more source

Wireless Local Area Network Link Sharing in Unmanned Surface Vehicle Control Scenarios. [PDF]

Sensors (Basel)
Gierłowski K, Hoeft M, Bęben A, Sosnowski M.   +3 more
europepmc   +1 more source

Selective Reflection of Chiral Ferroelectric Nematic Liquid Crystals Tuned by Electric Field Along the Helix Axis

Advanced Optical Materials, EarlyView.
It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel, Rohan Dharmarathna, James T. Gleeson, Robert J. Twieg, Samuel Sprunt, Antal Jákli   +5 more
wiley   +1 more source

Abnormal electromagnetic monitoring and electromagnetic spectrum data completion method based on original RF I/Q distribution characteristics. [PDF]

Sci Rep
Fan Y, Chen Z, Su T.
europepmc   +1 more source

Deep residual network enhanced with multilevel residual-of-residual for automatic classification of radio signals for 5G and beyond systems. [PDF]

Sci Rep
Jabeur R, Alaerjan A, Chikha HB.
europepmc   +1 more source

Architectures, Protocols and Algorithms of Sensor Networks-Second Edition. [PDF]

Sensors (Basel)
Płaczek B.
europepmc   +1 more source