Results 41 to 50 of about 200,461 (334)

Comparison of Color Light-Emitting Diode Corneal Topographer and Dual Rotating Scheimpflug–Placido Topographer

Journal of Ophthalmology, 2018
Purpose. To compare measurements of anterior and posterior keratometric values, using a color light-emitting diode corneal topographer and a dual rotating Scheimpflug–Placido topographer. Methods.
Jae Hyuck Lee, Yong Woo Lee, Jong Soo Lee, Michael C. Knorz, Gerd U. Auffarth, Chul Young Choi   +5 more
doaj   +1 more source

Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films

Advanced Engineering Materials, EarlyView.
Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß, Juliette Cardoletti, Udo R. Eckstein, Shaoxiong Xie, Alexander Martin, Ken‐ichi Kakimoto, Sebastjan Glinšek, Kyle G. Webber   +7 more
wiley   +1 more source

Sustainable Synthesis of Bio‐Based Magnetic and Conductive Wood for Electromagnetic Interference Shielding Applications

Advanced Engineering Materials, EarlyView.
A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya, Majed Amini, Mohammad Arjmand, Earl Johan Foster   +3 more
wiley   +1 more source

Optical nanolithography using a scanning near-field probe with an integrated light source [PDF]

, 2008
An ultracompact near-field optical probe is described that is based on a single, integrated assembly consisting of a gallium nitride (GaN) light-emitting diode (LED), a microlens, and a cantilever assembly containing a hollow pyramidal probe with a ...
Adawi, Ali M., Kingsley, James W., Leggett, Graham J., Lidzey, David G., Ray, Sumon K.   +4 more
core   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +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

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

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

Bacterial Hybrid Light‐Emitting Diodes

Advanced Materials
AbstractPhoton down‐converting filters with fluorescent proteins (FPs) are a new frontier in the quest for rare‐earth‐free and non‐toxic color filters for white light‐emitting diodes. There are, however, concerns related to the FP purification costs and lack of FP recyclability/reuse.
Sara Ferrara, Stephanie Willeit, Juan Pablo Fuenzalida-Werner, and Rubén D. Costa   +3 more
openaire   +3 more sources

Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen

Advanced Functional Materials, EarlyView.
This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann, Christoph Findler, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko   +4 more
wiley   +1 more source