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Blue light emitting diodes
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Recent studies have shown that blue light-emitting diode (LED) light has anti-tumor effects, suggesting the possibility of using visible light in cancer therapy. However, the effects of blue light irradiation on cells in the tumor microenvironment, including tumor-associated macrophages (TAMs), are unknown.
10p
vikoch
27-06-2024
2
1
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The study will focus on monitoring defects and finding out the nature of these defects. Bulk GaN was irradiated by a 2 MeV electron beam at a fluence of 5×1016 cm2 and studied by deep-level transient spectroscopy (DLTS). After irradiation, a broad peak, including at least two traps, was detected. The trap D1 (EC −0.16 eV) observed from a broad peak is induced during the annealing process below 550K and completely annealed out at 550K after 10 hours.
6p
dianmotminh02
03-05-2024
6
2
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MoO3 nanoparticles were prepared by a surfactant assisted sonochemical method. The results show that the samples can be used as blue light emitting components of white light emitting diodes.
9p
viberbers
09-08-2023
6
3
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This paper is an attempt to survey the benefits of a well-designed photoreactor containing just 6 ultraviolet (UV) high power light emitting diodes (HPLEDs); the power and wavelength of each UV HPLED are 1 W and 365 nm, respectively, the latter being an efficient source for photocatalytic studies.
6p
viberbers
09-08-2023
7
3
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Phosphor-converted white light emitting diodes (white LEDs) have received great attention in recent years since they have several excellent features such as high lumen output, low power consumption, long lifetime and environmentally friendly.
5p
viberbers
09-08-2023
4
3
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In this study, for the purpose of cost reduction, H. pluvialis is grown in pilot scale angled twin-layer porous substrate photobioreactors with light energy from red/blue LEDs that can produce red light, blue light, or a combination of blue-red light. The total dry biomass of the microalgae reached a maximum of 40.74 g.m-2 under blue-red LEDs.
8p
nguaconbaynhay12
13-06-2021
5
2
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One of the recent innovations in the field of agriculture is Pink Farming. It is a ex-situ farming technique using pink colored illumination for the cultivation of crops. This pinkcolored light is a mixture of red and blue lights from LEDs (Light Emitting Diodes). are being converted into vertical pink farms are made by transformation of large warehouses located in the suburbs of the cities, growing crops arranged in shelves, top to bottom, one over other. Japan has the World‟s biggest indoor vertical pink farm, Mirai Co. is situated at Japan.
7p
kethamoi6
29-06-2020
18
2
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Light absorption of the most plants is in range of blue (440 nm), deep-red (660 nm) and far-red around 700-740 nm. The deep-red and far-red light play important roles in reactions of photomorphogenesis of plants. Although red emission phosphors have been researched extensively for white light-emitting diodes, deep-red and far-red emission phosphors for plant growth have been reported inadequately. Thus, in this work, far-red emitting CaYAlO4:Mn4+ phosphor was synthesized by co-precipitation method coupled with various annealing temperature from 800 oC to 1300 oC for 5 h.
7p
nguyenminhlong19
22-04-2020
20
1
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The present study was conducted to assess the behaviour of broiler birds in an open-sided house under supplemental lighting programme using light emitting diodes (LEDs) and incandescent light. To perform this study a total of 240 straight run commercial Vencobb broiler chicks were procured, distributed in four different light treatment groups i.e. Tw; white (650nm), Tg; green (565nm) and Tb; blue (430nm) light LED (3 Watt each) and incandescent light bulbs (60 Watt each) as control (Tc) in 12 pens (4x3 factorial design) and reared from day old to 6th week of age.
8p
trinhthamhodang3
12-02-2020
18
0
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Aluminium tris(4-morpholinyl-8-hydroxyquinoline) has been synthesized and characterized. The photoluminescence measurements showed that the new derivative is blue shifted and has relative photoluminescence quantum yield two times higher compared to the pristine Al tris(8- hydroxyquinoline). Deferential scanning colorimetric studies revealed that the newly synthesized Alq3 derivative in this work is amorphous material with the highest transition glass temperature value among the reported amorphous Alq3 derivatives.
5p
kethamoi1
17-11-2019
11
1
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White light emitting diodes (WLEDs) were made by coating organic and inorganic hybrid composites on blue LED chips. Y3Al5O12:Ce (YAG:Ce) nano powder prepared by lowtemperature Sol-Gel method exhibited a broadband green emission spectrum with the peak at 521 nm.
7p
thuyliebe
12-10-2018
16
0
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Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Effect of triplet multiple quantum well structures on the performance of blue phosphorescent organic light emitting diodes
12p
sting03
06-02-2012
42
2
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Introduction to LEDs: How LEDs work + some points. Comparison with other sources of light. LED in communication. Blue &White LED technologies. How they are made? Their application? Brief about blue laser? Stands for light emitting diode. Semiconductor device: p-n junction forward-biased.current emits incoherent narrow spectrum light (due to recombination in transition region near the junction.) Color of the emitted light depends on the chemical of the semiconducting material used. (Near-ultraviolet, visible or infrared.)...
52p
lehieukutek
26-12-2009
214
133
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