Results 81 to 90 of about 76,300 (255)
Advanced Optical Materials, EarlyView.High‐pressure recrystallization provides a reproducible route to high‐quality CsPbBr3${\rm CsPbBr}_{3}$ thin films. Optimized processing at 300 bar yields smooth, pinhole‐free, single‐phase 3D perovskite layers with tunable thickness, enhanced crystallinity, reduced amplified‐spontaneous‐emission threshold, improved photostability, and phase‐transition
Asma Miled +15 more
wiley +1 more source
Power Efficiency for Device-to-Device Communications
CoRR, 2013 The concept of device-to-Device (D2D) communication as an underlay coexistence with cellular networks gains many advantages of improving system performance. In this paper, we model such a two-layer heterogenous network based on stochastic geometry approach. We aim at minimizing the expected power consumption of the D2D layer while satisfying the outage
Yanbo Ma, Yuan Liu 0001, Meixia Tao
openaire +2 more sources
Optically Active Birefringent Polymer–Lipid Hybrid Microparticles With Dual‐Stimuli Responsiveness
Advanced Optical Materials, EarlyView.The present study reports on geometrically tunable, magnetic and NIR‐stimuli‐responsive anisotropic microparticles that exhibit intrinsic birefringence due to their lamellar crystalline architecture, enabling label‐free detection under a polarized light.
Burcu Okmen Altas +2 more
wiley +1 more source
Malicious-Behavior-Aware D2D Link Selection Mechanism
IEEE Access, 2017 Device-to-device (D2D) communications can effectively offload the traffic of cellular system in a distributed way. However, during the data forwarding process, malicious D2D users can intermittently discard data of other users, which seriously affects ...
Ruyan Wang +4 more
doaj +1 more source
Photodoping in Wide‐Bandgap Perovskite Solar Cells With MXenes
Advanced Optical Materials, EarlyView.Ultrafast tandem spectroscopy and DFT modeling reveal the separate dynamics and the imbalance of electrons and holes in wide bandgap perovskite solar cells with MXene incorporation. The enhanced photoconversion performances of the devices are traced to photodoping, with selective hole trapping and suppressed recombination of electrons.
Angelica Simbula +17 more
wiley +1 more source
From Molecular Design to Optical Anisotropy: Orientation Control in BODIPY Langmuir‐Blodgett Films
Advanced Optical Materials, EarlyView.The supramolecular organization of amphiphilic boron‐dipyrromethene (BODIPY) dyes in Langmuir–Blodgett monolayers is shown to govern their optical anisotropy. By correlating nanoscale imaging and angle‐resolved spectroscopy, we reveal symmetry‐driven control of transition dipole orientation, enabling either in‐plane or out‐of‐plane optical responses ...
Lilia Huynh +9 more
wiley +1 more source
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 +4 more
wiley +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 +6 more
wiley +1 more source
Spectral Condensing of All‐Dielectric Structural Colors via Cascaded Formation of Self‐Similar Beams
Advanced Optical Materials, EarlyView.Standalone low‐index microscale ridges (MRs) are promising platforms for all‐dielectric structural color generation. They are compact and easy to fabricate, but their color purity trails behind that of resonator‐ or periodic pattern‐based structural color pixels.
Rabiul Islam Sikder, Jaeyoun Kim
wiley +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 +13 more
wiley +1 more source