scholarly journals 4 Gbps wireless optical communications up to 5 m using a UV-C micro-light-emitting diode array

2021 ◽  
Author(s):  
Jonathan J.D. McKendry ◽  
Enyuan Xie ◽  
Mohamed Sufyan Islim ◽  
Xiaobin Sun ◽  
Daniel MacLure ◽  
...  
Keyword(s):  
Optical Communications ◽  
Light Emitting Diode ◽  
Diode Array ◽  
Light Emitting ◽  
Wireless Optical Communications ◽  
Uv C

scholarly journals UV-C LED Irradiation Reduces Salmonella on Chicken and Food Contact Surfaces

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1459
Author(s):  
Alexandra Calle ◽  
Mariana Fernandez ◽  
Brayan Montoya ◽  
Marcelo Schmidt ◽  
Jonathan Thompson
Keyword(s):  
Light Emitting Diode ◽  
Chicken Breast ◽  
Light Emitting ◽  
Work Surface ◽  
Food Contact ◽  
Bacterial Aggregation ◽  
Food Contact Surfaces ◽  
Contact Surfaces ◽  
Uv C ◽  
Surface Pores

Ultraviolet (UV-C) light-emitting diode (LED) light at a wavelength of 250–280 nm was used to disinfect skinless chicken breast (CB), stainless steel (SS) and high-density polyethylene (HD) inoculated with Salmonella enterica. Irradiances of 2 mW/cm2 (50%) or 4 mW/cm2 (100%) were used to treat samples at different exposure times. Chicken samples had the lowest Salmonella reduction with 1.02 and 1.78 Log CFU/cm2 (p ≤ 0.05) after 60 and 900 s, respectively at 50% irradiance. Higher reductions on CB were obtained with 100% illumination after 900 s (>3.0 Log CFU/cm2). Salmonella on SS was reduced by 1.97 and 3.48 Log CFU/cm2 after 60 s of treatment with 50% and 100% irradiance, respectively. HD showed a lower decrease of Salmonella, but still statistically significant (p ≤ 0.05), with 1.25 and 1.77 Log CFU/cm2 destruction for 50 and 100% irradiance after 60 s, respectively. Longer exposure times of HD to UV-C yielded up to 99.999% (5.0 Log CFU/cm2) reduction of Salmonella with both irradiance levels. While UV-C LED treatment was found effective to control Salmonella on chicken and food contact surfaces, we propose three mechanisms contributing to reduced efficacy of disinfection: bacterial aggregation, harboring in food and work surface pores and light absorption by fluids associated with CB.

Light-emitting device with regularly patterned growth of an InGaN/GaN quantum-well nanorod light-emitting diode array

2013 ◽  
Vol 38 (17) ◽  
pp. 3370 ◽  
Author(s):  
Horng-Shyang Chen ◽  
Yu-Feng Yao ◽  
Che-Hao Liao ◽  
Charng-Gan Tu ◽  
Chia-Ying Su ◽  
...  
Keyword(s):  
Quantum Well ◽  
Light Emitting Diode ◽  
Diode Array ◽  
Light Emitting ◽  
Patterned Growth

A Novel Image Analysis of Light Emitting Diode Array Biostimulation Applied on Microcirculation

2018 ◽  
Author(s):  
Chuan-Tsung Su ◽  
Yi-Chia Shan ◽  
Wei Fang ◽  
Chii-Wann Lin ◽  
Ju-Hsuan Juan ◽  
...  
Keyword(s):  
Image Analysis ◽  
Light Emitting Diode ◽  
Diode Array ◽  
Light Emitting

Investigation of Uniform Illumination of Near-Field Targets Using a Conic Light-Emitting Diode Array

2010 ◽  
Vol 30 (10) ◽  
pp. 3039-3043 ◽  
Author(s):  
黄启禄 Huang Qilu ◽  
吴逢铁 Wu Fengtie
Keyword(s):  
Light Emitting Diode ◽  
Near Field ◽  
Diode Array ◽  
Uniform Illumination ◽  
Light Emitting

Photoelectric Characteristics of Micro Flip-Chip AlGaInP Light Emitting Diode Array

2018 ◽  
Vol 38 (9) ◽  
pp. 0923001
Author(s):  
Ban Zhang ◽  
Liang Jingqiu ◽  
Lü Jinguang ◽  
Li Yang
Keyword(s):  
Flip Chip ◽  
Light Emitting Diode ◽  
Diode Array ◽  
Light Emitting ◽  
Photoelectric Characteristics
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