Results 61 to 70 of about 3,559,659 (295)

Association of light emitting diodes (LED) devices with premature aging: a cross-sectional descriptive study

Journal of the Pakistan Medical Association
Objective: To assess the relationship between light-emitting diode device usage and premature aging. Method: The cross-sectional, descriptive study was conducted from October 2023 to May 2024 after approval from the ethics review committee of Pakistan
Sadia Rehman, Shaikh Muhammad Owais Saeed, Yumna Shariff, Muhammad Raza Sarfraz, Seemab Khan, Zara Sami   +5 more
doaj   +1 more source

The reflection of diode technology light emitting (LED) on the modular design of external lighting

الاكاديمي, 2017
Search marked (the reflection of diode technology light emitting (LED) on the modular design of external lighting) is an analytical study of the units, external lighting for gardens and adopted in its work on the diode technology emitting light to reach ...
Esam Nouri Majeed
doaj   +1 more source

Nonlinear Quantum Dot Light Emitting Diode Dynamics and Synchronization with Optoelectronic Feedback

مجلة علوم ذي قار, 2023
We studies a three-variable dimensionless model for a quantum dot light emitting diode (QD-LED) subject to optoelectronic feedback (OEFB). In dependence of the feedback strength and delay-time we analyze complex bifurcation scenarios for the intensity ...
Methag Abdalwahed Kadim, Sadeq ajeel, Ali Natheer Tuaimah, Ali Falah Hassan, Sora F. Abdalah, kais al naimee, Riccardo Meucci, amin alkhursan, Ali. H. Khidhir, Hussein ALHusseini   +9 more
doaj   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

Tuning the Optoelectronic Properties of Wide Bandgap Perovskites: Data‐Driven Insights from Combinatorial Synthesis and High‐Throughput Experimentation

Advanced Functional Materials, EarlyView.
Combinatorial vapor deposition enables independent tuning of Cs/Pb and Br/Cl in wide‐bandgap perovskites. Automated multimodal mapping of 500+ compositions reveals a high‐energy optical transition that correlates with enhanced photoluminescence, defining a practical Cs/Pb window.
Alexander Wieczorek, Sergey Tsarev, Nathan Rodkey, Oleksandr Pshyk, Stefanie Frick, Maksym V. Kovalenko, Sebastian Siol   +6 more
wiley   +1 more source

Progress of display performances: AR, VR, QLED, OLED, and TFT

Journal of Information Display, 2019
In 2018, great progress in display performances was achieved in the field of virtual reality (VR), augmented reality (AR), quantum dot light-emitting diode (QLED), and organic light-emitting diode (OLED) displays, in addition to the thin-film transistor (
Ho Jin Jang, Jun Yeob Lee, Jeonghun Kwak, Dukho Lee, Jae-Hyeung Park, Byoungho Lee, Yong Young Noh   +6 more
doaj   +1 more source

LED TUBS ARTIFICIAL LIGHTING SYSTEM IN BROILER PRODUCTION [PDF]

Engenharia Agrícola, 2018
Light is important for the physiology and zootechnical development of broilers and is characterized by the type of source defined by the spectral emission and geometry of the lamp, as well as the intensity and spatial distribution of the illuminance. The
Rogério Seber, Daniella Moura, Nilsa Lima, Juliana Massari   +3 more
doaj   +1 more source

Two Coexisting Pathways to Volatility in Valence‐Change Memory Devices

Advanced Functional Materials, EarlyView.
Volatile VCM‐type memristive devices exhibit current relaxation after resistive switching, but their microscopic origin remains debated. Using pulsed measurements and a new Tunnel‐DLTS approach on Pt/SrTiO3/Nb:SrTiO3 devices, we show that post‐SET volatility is predominantly ionic, while electronic contributions—arising from quasi‐Fermi‐level ...
Johannes Hellwig, Clemens Wittberg, Dimitrios Spithouris, Regina Dittmann   +3 more
wiley   +1 more source

Dual‐Layer Conducting and Redox Polymer Bioanodes for Synergistic Enhancement of Microbial Extracellular Electron Transfer

Advanced Functional Materials, EarlyView.
A hybrid PEDOT/Fc‐LPEI conducting/redox polymer bioanode synergistically improves microbial extracellular electron transfer (EET) in Shewanella oneidensis MR‐1. The dual‐layer interface delivers 18‐fold higher current output and 27‐fold greater charge collected than bare carbon felt, highlighting an effective strategy for high‐performance ...
Shenghan Gu, Saman Azhari, Kuniaki Nagamine, Takeo Miyake, Gábor Méhes   +4 more
wiley   +1 more source

Tailoring Light Management in All‐Perovskite Tandem Solar Cells: The Impact of Nanotextures

Advanced Functional Materials, EarlyView.
To further improve the power conversion efficiency of all‐perovskite tandem solar cells, light management strategies need to be implemented. Front‐sided nanotextures reduce reflection losses, which boosts light absorption, thus increasing the tandem JSC, which is further supported by reducing parasitic absorption.
Sebastian Berwig, Yeonghun Yun, Doyun Im, Isabella Taupitz, Alexandros Cruz, Marlene Härtel, Bor Li, Kevin J. Prince, Hanifah Winarto, Thomas W. Gries, Klaus Jäger, Florian Riesebeck, Daniele Mantione, Sharon Monaci, Silvia Mariotti, Vishnu Vijayakumar, René A. J. Janssen, Sangwook Lee, Bernd Stannowski, Christiane Becker, Philipp Tockhorn, Steve Albrecht   +21 more
wiley   +1 more source