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Assessment of the effectiveness of light-emitting diode and diode laser hybrid light sources to intensify dental bleaching treatment
(Informa Healthcare, 2011-05-01)
Objective. To evaluate the effectiveness of the color change of hybrid light-emitting diode (LED) and low-intensity infrared diode laser devices for activating dental bleaching and to verify the occurrence of a color ...
Assessment of the effectiveness of light-emitting diode and diode laser hybrid light sources to intensify dental bleaching treatment
(Informa Healthcare, 2011-05-01)
Objective. To evaluate the effectiveness of the color change of hybrid light-emitting diode (LED) and low-intensity infrared diode laser devices for activating dental bleaching and to verify the occurrence of a color ...
Efficient green-emitting Tb3+-doped di-ureasil coating phosphors for near-UV excited light-emitting diodes
(2020-03-01)
Light-emitting diodes (LEDs) are replacing conventional lighting sources, like incandescent and fluorescent lamps, due to their higher efficiency, lower energy consumption and environmental friendliness characteristics. ...
Three generations of luminous devices: a comparison in search of energy efficiency and ecologyca re
(4th International Congress on Alternative Energies, 2013-10-15)
ln this work a comparison is made between three generations of luminous devices, in order to have a quantitative estimation about the advantages of the new technologies on illumination sources based on Light Emitting Oiodes ...
Fast and cost effective fabrication of microlens arrays for enhancing light out-coupling of organic light-emitting diodes
(Elsevier Science, 2019-10)
The efficiency of organic light-emitting diodes (OLEDs) deposited on flat substrates is strongly limited by the total internal reflection at the air-substrate interface. An effective strategy to reduce the amount of substrate ...
Luminária de LED com controle automatizado de luminosidade
(Universidade Tecnológica Federal do ParanáCornelio ProcopioEngenharia Elétrica, 2013)
This paper has as its main target the creation os a luminaire that uses as illumination source light emitting diodes (LED) and has an automatic brightness control in accordance with the brightness already existent in ...
Extraction of 2′-O-apiosyl-6′-O-crotonic acid-betanin from the ayrampo seed (Opuntia soehrensii) cuticle and its use as an emitting layer in an organic light-emitting diode
(Royal Society of Chemistry, 2020)
The molecule 2′-O-apiosyl-6′-O-crotonic acid-betanin (called Achkiy) was obtained after an ecofriendly and low-cost purification process of the extract from the ayrampo seed cuticle. Results from EDS give us an idea of the ...