Results 51 to 60 of about 157,825 (301)

Doping concentration effect on performance of single QW double-heterostructure InGaN/AlGaN light emitting diode

EPJ Web of Conferences, 2017
Light emitting diode (LED) employed a numerous applications such as displaying information, communication, sensing, illumination and lighting. In this paper, InGaN/AlGaN based on one quantum well (1QW) light emitting diode (LED) is modeled and studied ...
Abdul Halim N. Syafira, Wahid M.Halim A., Ahmad Hambali N. Azura M., Rashid Shanise, Shahimin Mukhzeer M.   +4 more
doaj   +1 more source

Wafer-scale organic-on-III-V monolithic heterogeneous integration for active-matrix micro-LED displays

Nature Communications, 2023
The organic thin-film transistor is advantageous for monolithic three-dimensional integration attributed to low temperature and facile solution processing.
Lei Han, Simon Ogier, Jun Li, Dan Sharkey, Xiaokuan Yin, Andrew Baker, Alejandro Carreras, Fangyuan Chang, Kai Cheng, Xiaojun Guo   +9 more
doaj   +1 more source

Concept of a GaN-LED-based positioning system using structured illumination [PDF]

, 2015
Accurate self-orientation within a space can be achieved using only a simple photodetector and a remote Gallium Nitride micro-light-emitting diode array, emitting a time series of varying spatial illumination patterns onto the ...
Dawson, Martin D., Gu, Erdan, Herrnsdorf, Johannes, Strain, Michael J.   +3 more
core   +1 more source

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

Comparative analysis of LED priming effects on two medicinal lemon balm genotypes one and three weeks post-drought stress

BMC Plant Biology
Background 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, Leila Shabani, Mohammad Reza Sabzalian, Sahar Hassannejad   +3 more
doaj   +1 more source

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

Temperature compensation of light-emitting diodes [PDF]

, 1972
Circuit which includes a thermistor-resistor combination to compensate for temperature fluctuations by supplying input voltage to light-emitting diode, maintains constant light output.
Burrous, C. N., Deboo, G. J.
core   +1 more source

Co-planar spin-polarized light emitting diode

, 2005
Studies of spin manipulation in semiconductors has benefited from the possibility to grow these materials in high quality on top of optically active III-V systems.
Jungwirth, T., Kaestner, B., Sinova, Jairo, Wunderlich, J.   +3 more
core   +1 more source

Unraveling the Effect of Tramp Elements on Phase Transformations in Steels by Combining CALPHAD Modeling and Experiments

Advanced Engineering Materials, EarlyView.
This study investigates how tramp elements from increased scrap usage influence phase transformations in low‐alloyed steel. Combining dilatometry and microscopy reveal that tramp elements delay transformations, reduce critical cooling rates and increase hardenability.
Lukas Hatzenbichler, Daniel Marian Ogris, Phillip Haslberger, Matthew Galler, Oleksandr Glushko, Ronald Schnitzer   +5 more
wiley   +1 more source

Elucidating the role of hyperfine interactions on organic magnetoresistance using deuterated aluminium tris(8-hydroxyquinoline) [PDF]

, 2009
Measurements of the effect of a magnetic field on the light output and current through an organic light emitting diode made with deuterated aluminium tris(8-hydroxyquinoline) have shown that hyperfine coupling with protons is not the cause of the ...
A. J. Drew, M. Heeney, N. J. Rolfe, P. B. Wyatt, T. Kreouzis, W. G. Richards, W. P. Gillin   +6 more
core   +2 more sources