Results 111 to 120 of about 9,488 (354)

Resonant energy transfer in light harvesting and light emitting applications

open access: yes, 2009
The performance of light emitting and light harvesting devices is improved by utilising resonant energy transfer. In lighting applications, the emission energy of a semiconductor heterostructure and the absorption of organic dyes or colloidal quantum ...
Chanyawadee, Soontorn
core  

The Design of Diffuse Reflective Off-Axis Surface for Noncircular LED Arrays

open access: yesIEEE Photonics Journal, 2017
The diffuse reflection light-emitting diode (LED) lighting system is widely used in many areas with its advantages of high uniformity. In order to optimize the lighting performance of noncircular LED arrays, especially illumination efficiency, this paper
Zhen-Min Zhu, Xiang Sun, Bo Peng
doaj   +1 more source

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

open access: yesAdvanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief   +12 more
wiley   +1 more source

Diode laser based lighting

open access: yes, 2019
The thesis deals with a novel type of solid-state lighting – laser diode lighting. Laser diode lighting is based on the use of a blue laser diode to excite a phosphor material that will generate white light.
Krasnoshchoka, Anastasiia
core  

The effects of light-emitting diode lighting on greenhouse plant growth and quality

open access: yes, 2013
The aim of this study is to present the light emitting diode (LED) technology for greenhouse plant lighting and to give an overview about LED light effects on photosynthetic indices, growth, yield and nutritional value in green vegetables and tomato ...
Akvile Viršile   +3 more
core   +1 more source

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

open access: yesAdvanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti   +11 more
wiley   +1 more source

Feasibility Study on LED Street Lighting with Smart Dimming Systems in Wooi Stream, Seoul

open access: yesJournal of Asian Architecture and Building Engineering, 2017
The South Korean and Seoul metropolitan governments have been forced to radically change the current High Pressure Sodium (HPS) lamps to Light Emitting Diode (LED) lamps for street lighting in cities according to ″LED Plan 2060.″ Thus, this study aims to
Jeong Tai Kim, Taeyon Hwang
doaj   +1 more source

Analytic Hierarchy Process & Multi Attribute Utility Theory Based Approach for the Selection of Lighting Systems in Residential Buildings: A Case Study

open access: yesBuildings, 2018
This paper presents an approach developed for selecting lighting systems in residential buildings using an Analytic Hierarchy Process (AHP) and the Multi Criteria Decision Making Technique (MCDMT). The developed approach considers four selection criteria
Othman Alshamrani   +2 more
doaj   +1 more source

All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security

open access: yesAdvanced Materials, EarlyView.
An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak   +4 more
wiley   +1 more source

New‐Era Polymer Thermoelectrics: Material Innovations, Doping Frontiers, Decoupling Strategies, and Unconventional Applications

open access: yesAdvanced Materials, EarlyView.
The field of polymer thermoelectrics is entering a new era, featuring breakthroughs in addressing the conventional performance disparity between p‐type and n‐type polymers, pioneering doping frontiers, and sophisticated decoupling strategies. This review explores innovations in molecular design and superior stabilities, bridging the gap from ...
Suhao Wang
wiley   +1 more source

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