Methods for measuring the optical properties of tissue samples in the visible and near infrared wavelength range

1993 ◽  
Author(s):  
Pieter van der Zee
Keyword(s):  
Optical Properties ◽  
Wavelength Range ◽  
Near Infrared ◽  
Tissue Samples ◽  
Infrared Wavelength ◽  
Optical Properties Of Tissue

Effect of mechanical bruises on optical properties of mature peaches in the near-infrared wavelength range

2021 ◽  
Vol 211 ◽  
pp. 114-124
Author(s):  
Wenchuan Guo ◽  
Mengjie Gao ◽  
Jingliang Cheng ◽  
Yihang Zhou ◽  
Xinhua Zhu
Keyword(s):  
Optical Properties ◽  
Wavelength Range ◽  
Near Infrared ◽  
Infrared Wavelength

Hybridization-sensitive fluorescence control in the near-infrared wavelength range

2011 ◽  
Vol 9 (11) ◽  
pp. 4199 ◽  
Author(s):  
Shuji Ikeda ◽  
Hiroyuki Yanagisawa ◽  
Akiko Nakamura ◽  
Dan Ohtan Wang ◽  
Mizue Yuki ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Near Infrared ◽  
Infrared Wavelength

scholarly journals Optical Measurements on Solids of Possible Interstellar Importance

1973 ◽  
Vol 52 ◽  
pp. 297-301 ◽  
Author(s):  
Donald R. Huffman ◽  
James L. Stapp
Keyword(s):  
Optical Properties ◽  
Wavelength Range ◽  
Optical Constants ◽  
Near Infrared ◽  
Large Change ◽  
Optical Measurements ◽  
Ultraviolet A ◽  
Peculiar Characteristic ◽  
Far Ultraviolet

Optical constants of olivine – (Mg, Fe)2SiO4 and magnetite – Fe3O4 are presented for the wavelength range from near infrared to far ultraviolet. A feature occurs in the optical constants of olivine at about 1460 Å, but no structure that could give rise to a 2200 Å interstellar feature is found. The most peculiar characteristic of the magnetite results is the large change of optical properties with temperature in the infrared.

scholarly journals Optical investigation of bovine grey and white matters in visible and near-infrared ranges

2021 ◽  
Vol 27 (1) ◽  
pp. 99-107
Author(s):  
Ali Shahin ◽  
Wesam Bachir ◽  
Moustafa Sayem El-Daher
Keyword(s):  
Optical Properties ◽  
Absorption Coefficient ◽  
Wavelength Range ◽  
Grey Matter ◽  
Near Infrared ◽  
Biological Tissues ◽  
Integrating Sphere ◽  
Visible Range ◽  
Optical Investigation

Abstract Introduction: Due to enormous interests for laser in medicine and biology, optical properties characterization of different tissue have be affecting in development processes. In addition, the optical properties of biological tissues could be influenced by storage methods. Thus, optical properties of bovine white and grey tissues preserved by formalin have been characterized over a wide wavelength spectrum varied between 440 nm and 1000 nm. Materials and Methods: To that end, a single integrating sphere system was assembled for spectroscopic characterization and an inverse adding-doubling algorithm was used to retrieve optical coefficients, i.e. reduced scattering and absorption coefficients. Results: White matter has shown a strong scattering property in comparison to grey matter. On the other hand, the grey matter has absorbed light extensively. In comparison, the reduced scattering profile for both tissue types turned out to be consistent with prior works that characterized optical coefficients in vivo. On the contrary, absorption coefficient behavior has a different feature. Conclusion: Formalin could change the tissue’s optical properties because of the alteration of tissue’s structure and components. The absence of hemoglobin that seeps out due to the use of a formalin could reduce the absorption coefficient over the visible range. Both the water replacement by formalin could reduce the refractive index of a stored tissue and the absence of hemoglobin that scatters light over the presented wavelength range should diminish the reduced scattering coefficients over that wavelength range.

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