Results 21 to 30 of about 87,522 (313)
Thin-film photonic crystal LEDs with enhanced directionality [PDF]
, 2009 The use of photonic crystals for light extraction from light-emitting diodes (LEDs) gives the possibility to shape the farfield emission pattern. This is of particular interest for étendue-limited LED applications that require a more directional ...
Bergenek, Krister +8 more
core +1 more source
LED-to-LED based VLC systems [PDF]
Proceedings of the Workshop on Internet of Lights, 2021 Visible light communication (VLC) is an emerging short-range wireless communication technology using the unlicensed light spectrum. Light Emitting Diode (LED) is used as VLC transmitter, while photodiodes or image sensors are used as receiver, depending on the applications and hardware constraints.
Muhammad Sarmad Mir +4 more
openaire +4 more sources
Journal of the American Society for Horticultural Science, 2023 Chrysanthemum (Chrysanthemum ×morifolium) is a common ornamental crop with a qualitative short-day flowering response. Extending a short day with moderate blue [B (400–500 nm)] light inhibits flowering in greenhouse conditions with sunlight but does not ...
Annika E. Kohler +3 more
doaj +1 more source
PRICHAIN: A Partially Decentralized Implementation of UbiPri Middleware Using Blockchain
Sensors, 2019 With the popularization of the Internet-of-Things, various applications have emerged to make life easier. These applications generate a large amount of user data.
Iago Sestrem Ochôa +7 more
doaj +1 more source
LED–LED portable oxygen gas sensor [PDF]
Analytical and Bioanalytical Chemistry, 2012 A portable instrument for oxygen determination, based on the quenching of phosphorescent octaethylporphyrin by gaseous O(2), has been developed using the fluorimetric paired emitter-detector diode technique (FPEDD). The instrument configuration consists of two light-emitting diodes (LEDs) facing each other, with an interchangeable support containing a ...
Perez de Vargas-Sansalvador, Isabel M. +5 more
openaire +5 more sources
TSEG - The Low Countries Journal of Social and Economic History, 2022 The Dutch Drankwet (hereinafter: Liquor Act) of 1881, the result of decades of temperance activism, was met with much criticism — little had come of the national legislation’s aim to reduce the consumption of alcohol. Even so, did this also mean that little changed in the sale of alcohol? This article examines how the Liquor Act was implemented locally
Schmidt, A. +2 more
openaire +2 more sources
Preparation, luminescence, and application of LiMeBO3 borates, Me = Mg, Ca, Sr, Ba, Zn, Cd. Review
Конденсированные среды и межфазные границы, 2023 The review summarises and analyses data on the preparation, structure, and spectral-luminescent properties of LiMeBO3-based borates, Me = bivalent metal.
Tatyana N. Khamaganova
doaj +1 more source
Side-Chain Engineering in Small-Molecule Hole Transport Layer Materials for High-Performance QD-LEDs
, 2023 By leveraging on the great advantage of low-cost solution processability, quantum-dot light-emitting diodes (QD-LEDs) based on polymeric hole transport layers (HTLs) have achieved great efficiency and stability.
Ming Yang (109148) +8 more
core +1 more source
History of Controlled Environment Horticulture: Indoor Farming and Its Key Technologies
HortScience, 2022 The most recent platform for protected horticultural crop production, with the shortest history to date, is located entirely indoors, lacking even the benefit of free, natural sunlight.
Cary A. Mitchell
doaj +1 more source
AlGaN ultraviolet micro-LEDs [PDF]
, 2022 AlGaN-based UV LEDs have proven to have broad applications in many fields including sterilization, disinfection, purification, and phototherapy, but the performance still needs to be further improved.
Gu, Erdan +6 more
core +2 more sources