scholarly journals Measurement method of optical properties of ex vivo biological tissues of rats in the near-infrared range

2020 ◽  
Vol 59 (13) ◽  
pp. D111 ◽  
Author(s):  
Ana Sanchez-Cano ◽  
José Eduardo Saldaña-Díaz ◽  
Lorena Perdices ◽  
Isabel Pinilla ◽  
Francisco Javier Salgado-Remacha ◽  
...  
Keyword(s):  
Optical Properties ◽  
Measurement Method ◽  
Near Infrared ◽  
Ex Vivo ◽  
Biological Tissues ◽  
Infrared Range ◽  
Near Infrared Range

The optical diagnostics of parameters of biological tissues of human intact skin in near-infrared range

2016 ◽  
Author(s):  
Vasyl Petruk ◽  
Sergii Kvaternyuk ◽  
Boris Bolyuh ◽  
Dmitry Bolyuh ◽  
Vladimir Dronenko ◽  
...  
Keyword(s):  
Near Infrared ◽  
Optical Diagnostics ◽  
Biological Tissues ◽  
Infrared Range ◽  
Intact Skin ◽  
Near Infrared Range

scholarly journals Spectral Optical Properties of Rabbit Brain Cortex Between 200 and 1000 nm

2021 ◽  
Author(s):  
Tânia Gonçalves ◽  
Inês Soraia Martins ◽  
Hugo Silva ◽  
Valery Tuchin ◽  
Luís Oliveira
Keyword(s):  
Optical Properties ◽  
Spectral Range ◽  
Brain Cortex ◽  
Near Infrared ◽  
Ex Vivo ◽  
Biological Tissues ◽  
Rabbit Brain ◽  
Rabbit Brain Cortex ◽  
Infrared Spectral ◽  
The Brain

The knowledge of the optical properties of biological tissues in a wide spectral range is highly important for the development of noninvasive diagnostic or treatment procedures. The absorption coefficient is one of those properties, from which various information about tissue components can be retrieved. Using transmittance and reflectance spectral measurements acquired from ex vivo rabbit brain cortex samples, allowed to calculate its optical properties in the ultraviolet to the near infrared spectral range. Melanin and lipofuscin, the two pigments that are related to the ageing of tissues and cells were identified in the cortex absorption. By subtracting the absorption of these pigments from the absorption of the brain cortex, it was possible to evaluate the true ratios for the DNA/RNA and hemoglobin bands in the cortex – 12.33 fold (at 260 nm), 12.02 fold (at 411 nm) and 4.47 fold (at 555 nm). Due to the fact that the accumulation of melanin and lipofuscin increases with the ageing of the brain tissues and are related to the degeneration of neurons and their death, further studies should be performed to evaluate the evolution of pigment accumulation in the brain to prevent the development of Alzheimer, Parkinson and stroke pathologies in the brain.

Changes in Optical Properties of in vitro Myocardium Tissue Due to Heating in the Visible and Near-Infrared Range

2008 ◽  
Vol 35 (5) ◽  
pp. 792-796 ◽  
Author(s):  
敖荟兰 Ao Huilan ◽  
邢达 Xing Da ◽  
魏华江 Wei Huajiang ◽  
巫国勇 Wu Guoyong ◽  
鲁建军 Lu Jianjun
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Infrared Range ◽  
Near Infrared Range

Optical properties of a polyimide-fullerene system in the near infrared range (λ=1047 nm)

2003 ◽  
Vol 29 (8) ◽  
pp. 672-675 ◽  
Author(s):  
N. V. Kamanina ◽  
M. O. Iskandarov ◽  
A. A. Nikitichev
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Infrared Range ◽  
Near Infrared Range

Optical properties of bread in the near-infrared range

1988 ◽  
Vol 8 (2) ◽  
pp. 129-139 ◽  
Author(s):  
Christina Skjöldebrand ◽  
Christina Ellbjär ◽  
Claes Göran Andersson ◽  
Tord S. Eriksson
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Infrared Range ◽  
Near Infrared Range

Optical properties of oakwood in the near-infrared range of semi-transparency

2018 ◽  
Vol 57 (23) ◽  
pp. 6657 ◽  
Author(s):  
Leonid Dombrovsky ◽  
Jean-François Henry ◽  
Clarisse Lorreyte ◽  
Hervé Pron ◽  
Jaona Randrianalisoa
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Infrared Range ◽  
Near Infrared Range

Optical properties of native and coagulated human liver tissue and liver metastases in the near infrared range

1998 ◽  
Vol 23 (4) ◽  
pp. 194-203 ◽  
Author(s):  
Christoph-Thomas Germer ◽  
André Roggan ◽  
Joerg P. Ritz ◽  
Christoph Isbert ◽  
Dirk Albrecht ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liver Metastases ◽  
Liver Tissue ◽  
Human Liver ◽  
Near Infrared ◽  
Infrared Range ◽  
Human Liver Tissue ◽  
Near Infrared Range

scholarly journals Modelling of electronic and optical properties of Cu2SnS3 quantum dots for optoelectronics applications

2019 ◽  
Vol 37 (1) ◽  
pp. 108-115
Author(s):  
M. Irshad Ahamed ◽  
K. Sathish Kumar
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Solar Cell ◽  
Quantum Dot ◽  
Near Infrared ◽  
Infrared Range ◽  
Tin Sulfide ◽  
Bohr Radius ◽  
Energy Bandgap ◽  
Near Infrared Range

AbstractCopper tin sulfide (Cu2SnS3) is a unique semiconductor, whose nanocrystals have attracted researchers’ attention for its tunable energy bandgap and wavelength in visible and near infrared range. Quantum dots which are fabricated from this material are highly suitable for optoelectronics and solar cell applications. This paper discusses the tunable energy bandgap, exciton Bohr radius and wavelength range of wurtzite structure of Cu2SnS3 quantum dots to assess the opportunity to use them in optoelectronics applications. The considerations show that the mole fraction of copper increases as energy bandgap decreases and tunable energy bandgap of this quantum dot material is inversely proportional to the wavelength.

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