Results 41 to 50 of about 156,793 (303)
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 +5 more
doaj +1 more source
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 +3 more
wiley +1 more source
BMC Plant BiologyBackground Light is essential for producing high-quality plants. The advancement of light-emitting diode technology has unlocked new opportunities for growing plants in controlled settings.
Tayebeh Ahmadi +3 more
doaj +1 more source
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 +8 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. +4 more
core +1 more source
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 +4 more
wiley +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 +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 +9 more
doaj +1 more source
Monolithic Integration of a Novel Microfluidic Device with Silicon Light Emitting Diode-Antifuse and Photodetector [PDF]
, 2002 Light emitting diode antifuse has been integrated into a microfluidic device that is realized with extended standard CMOS technological steps. The device comprises of a microchannel sandwiched between a photodiode detector and a nanometer-scale diode ...
Berenschot, J.W. +4 more
core +1 more source
Detection of Single Molecules Illuminated by a Light-Emitting Diode [PDF]
, 2011 Optical detection and spectroscopy of single molecules has become an indispensable tool in biological imaging and sensing. Its success is based on fluorescence of organic dye molecules under carefully engineered laser illumination.
Antìa Lamas-Linares +21 more
core +5 more sources