Optimization of a Magnetic-Field-Enhanced Solid-State Fan and its Performance in Light-Emitting Diode Cooling Applications

2021 ◽  
Author(s):  
Jing Wang ◽  
Tao Zhu ◽  
Yan-jun Liu ◽  
Yong-qiang Chen ◽  
Jun Wang
Author(s):  
Yan Zhang ◽  
Yanjie Liang ◽  
Shihai Miao ◽  
Dongxun Chen ◽  
Shao Yan ◽  
...  

A series of Cr3+-doped BaMSi3O9 (M = Zr, Sn, Hf) near-infrared emitting phosphors with tunable luminescence properties have been successfully synthesized by using a simple solid-state reaction method. The developed...


1974 ◽  
Vol 20 (9) ◽  
pp. 1135-1137 ◽  
Author(s):  
R Fesler ◽  
Th Clerbaux

Abstract A small, easily-built photometer is described, in which a solid-state light-emitting diode is used as the light source and a phototransistor as the detector. The detector response is kept constant by modulating the diode intensity in proportion to the absorption characteristics of the sample being analyzed. Linearity and stability are good, even with turbid solutions (drift is <0.001 absorbance unit per hour). A typical application of this photometer is the continuous measurement of the percentage of oxyhemoglobin (0 to 100 %) in blood. For hemoglobin concentrations from 3 to 18 g/dl, the relation between oxyhemoglobin as estimated with this diode photometer and by a galvanic method (LEX-O2-CON) was: SO2LED = 0.993 SO2 % LEX + 0.69;r = 0.9975; n = 129; Syx = 1.59.


RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 82824-82831 ◽  
Author(s):  
Hua Yu ◽  
Degang Deng ◽  
Youjie Hua ◽  
Chenxia Li ◽  
Shiqing Xu

An emission-tunable phosphor, Eu2+-activated LiSr(4−x−y)Cax(BO3)3:yEu2+ phosphor, was synthesized by high temperature solid state reaction.


2020 ◽  
Author(s):  
Jiaxiang Liu

In consideration of the Sm3þ-centered characteristic orange-light as the ideal color-primary component toward a dichromatic white-light, herein, through the doping of the complex [Sm(acac)3(5-Br-2,20-bpy)] (2; Hacac ¼ acetylacetone; 5-Br-2,2′-bpy ¼ 5-Br-2,20-bipyridine) into the PVK (PVK ¼ poly(N-vinyl-carbazole)) host, the obtained PVK@2 film (10:1, wt/wt) exhibits the straightforward solid-state white-light (ΦPL ¼ 6.7%). Further using the PVK@2 film (10:1; wt/wt) as the emitting layer, its singlecomponent solution-processed WPLED gives the electroluminescent performance (LMax of 360.9 cd/m2, ηMax c of 1.08 cd/A) satisfactory enough for portable full-color flat displays


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