Inhibition of Fibroblast Proliferation In Vitro Using Low-Level Infrared Light-Emitting Diodes

2013 ◽  
Vol 39 (3pt1) ◽  
pp. 422-425 ◽  
Author(s):  
Hadar Lev-Tov ◽  
Neil Brody ◽  
Daniel Siegel ◽  
Jared Jagdeo
Keyword(s):  
Light Emitting Diodes ◽  
Infrared Light ◽  
Fibroblast Proliferation ◽  
Light Emitting ◽  
Low Level ◽  
Proliferation In Vitro

Inhibition of Fibroblast Proliferation In Vitro Using Red Light-Emitting Diodes

2013 ◽  
Vol 39 (8) ◽  
pp. 1167-1170 ◽  
Author(s):  
Hadar Lev-Tov ◽  
Andrew Mamalis ◽  
Neil Brody ◽  
Daniel Siegel ◽  
Jared Jagdeo
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Fibroblast Proliferation ◽  
Light Emitting ◽  
Proliferation In Vitro

scholarly journals Application of Light-Emitting Diodes for Improving the Nutritional Quality and Bioactive Compound Levels of Some Crops and Medicinal Plants

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1477
Author(s):  
Woo-Suk Jung ◽  
Ill-Min Chung ◽  
Myeong Ha Hwang ◽  
Seung-Hyun Kim ◽  
Chang Yeon Yu ◽  
...  
Keyword(s):  
Plant Growth ◽  
In Vitro Culture ◽  
Light Emitting Diodes ◽  
Photosynthetic Pigment ◽  
Antioxidant Properties ◽  
Light Sources ◽  
Light Emitting ◽  
Cell Defense ◽  
Led Irradiation

Light is a key factor that affects phytochemical synthesis and accumulation in plants. Due to limitations of the environment or cultivated land, there is an urgent need to develop indoor cultivation systems to obtain higher yields with increased phytochemical concentrations using convenient light sources. Light-emitting diodes (LEDs) have several advantages, including consumption of lesser power, longer half-life, higher efficacy, and wider variation in the spectral wavelength than traditional light sources; therefore, these devices are preferred for in vitro culture and indoor plant growth. Moreover, LED irradiation of seedlings enhances plant biomass, nutrient and secondary metabolite levels, and antioxidant properties. Specifically, red and blue LED irradiation exerts strong effects on photosynthesis, stomatal functioning, phototropism, photomorphogenesis, and photosynthetic pigment levels. Additionally, ex vitro plantlet development and acclimatization can be enhanced by regulating the spectral properties of LEDs. Applying an appropriate LED spectral wavelength significantly increases antioxidant enzyme activity in plants, thereby enhancing the cell defense system and providing protection from oxidative damage. Since different plant species respond differently to lighting in the cultivation environment, it is necessary to evaluate specific wavebands before large-scale LED application for controlled in vitro plant growth. This review focuses on the most recent advances and applications of LEDs for in vitro culture organogenesis. The mechanisms underlying the production of different phytochemicals, including phenolics, flavonoids, carotenoids, anthocyanins, and antioxidant enzymes, have also been discussed.

scholarly journals Two-dimensional perovskites with alternating cations in the interlayer space for stable light-emitting diodes

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yiyue Zhang ◽  
Masoumeh Keshavarz ◽  
Elke Debroye ◽  
Eduard Fron ◽  
Miriam Candelaria Rodríguez González ◽  
...  
Keyword(s):  
Thin Films ◽  
Near Infrared ◽  
Light Emitting Diodes ◽  
Interlayer Space ◽  
High Current Density ◽  
Operational Stability ◽  
Infrared Light ◽  
Two Dimensional ◽  
Commercial Development ◽  
Light Emitting

Abstract Lead halide perovskites have attracted tremendous attention in photovoltaics due to their impressive optoelectronic properties. However, the poor stability of perovskite-based devices remains a bottleneck for further commercial development. Two-dimensional perovskites have great potential in optoelectronic devices, as they are much more stable than their three-dimensional counterparts and rapidly catching up in performance. Herein, we demonstrate high-quality two-dimensional novel perovskite thin films with alternating cations in the interlayer space. This innovative perovskite provides highly stable semiconductor thin films for efficient near-infrared light-emitting diodes (LEDs). Highly efficient LEDs with tunable emission wavelengths from 680 to 770 nm along with excellent operational stability are demonstrated by varying the thickness of the interlayer spacer cation. Furthermore, the best-performing device exhibits an external quantum efficiency of 3.4% at a high current density (J) of 249 mA/cm2 and remains above 2.5% for a J up to 720 mA cm−2, leading to a high radiance of 77.5 W/Sr m2 when driven at 6 V. The same device also shows impressive operational stability, retaining almost 80% of its initial performance after operating at 20 mA/cm2 for 350 min. This work provides fundamental evidence that this novel alternating interlayer cation 2D perovskite can be a promising and stable photonic emitter.

scholarly journals Amelioration of oral mucositis pain by NASA near-infrared light-emitting diodes in bone marrow transplant patients

2011 ◽  
Vol 20 (7) ◽  
pp. 1405-1415 ◽  
Author(s):  
Brian D. Hodgson ◽  
David M. Margolis ◽  
Donna E. Salzman ◽  
Dan Eastwood ◽  
Sergey Tarima ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Bone Marrow Transplant ◽  
Oral Mucositis ◽  
Near Infrared ◽  
Light Emitting Diodes ◽  
Marrow Transplant ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Light Emitting ◽  
Transplant Patients

ERYTHROSINE AS A PHOTOSENSITIZER FOR ANTIMICROBIAL PHOTODYNAMIC THERAPY WITH BLUE LIGHT-EMITTING DIODES – AN IN VITRO STUDY

2021 ◽  
pp. 102445
Author(s):  
Marcela Leticia Leal Gonçalves ◽  
Elaine Marcílio Santos ◽  
Ana Cláudia Muniz Renno ◽  
Anna Carolina Ratto Tempestini Horliana ◽  
Matheus de Almeida Cruz ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
In Vitro Study ◽  
Vitro Study ◽  
Antimicrobial Photodynamic Therapy ◽  
Light Emitting

Room temperature thermo-electric pumping in mid-infrared light-emitting diodes

2013 ◽  
Vol 103 (18) ◽  
pp. 183513 ◽  
Author(s):  
Parthiban Santhanam ◽  
Duanni Huang ◽  
Rajeev J. Ram ◽  
Maxim A. Remennyi ◽  
Boris A. Matveev
Keyword(s):  
Room Temperature ◽  
Light Emitting Diodes ◽  
Infrared Light ◽  
Thermo Electric ◽  
Mid Infrared ◽  
Light Emitting

Polymer solar cells and infrared light emitting diodes: Dual function low bandgap polymer

2002 ◽  
Vol 385 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Christoph Winder ◽  
David Mühlbacher ◽  
Helmut Neugebauer ◽  
N. Serdar Sariciftci ◽  
Christoph Brabec ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Emitting Diodes ◽  
Polymer Solar Cells ◽  
Infrared Light ◽  
Dual Function ◽  
Light Emitting ◽  
Low Bandgap

Effect of Light-emitting Diodes on Growth of in vitro Propagules in Gerbera hybrida

2012 ◽  
Vol 20 (4) ◽  
pp. 233-237 ◽  
Author(s):  
Min-Kyung Kwon ◽  
◽  
Hyo Hoon Nam ◽  
Jeon Joong Sung ◽  
Jea Ha Lim
Keyword(s):  
Light Emitting Diodes ◽  
Gerbera Hybrida ◽  
Light Emitting ◽  
Effect Of Light
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