scholarly journals Optical properties of in-vitro biomineralised silica

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Alessandro Polini ◽  
Stefano Pagliara ◽  
Andrea Camposeo ◽  
Roberto Cingolani ◽  
Xiaohong Wang ◽  
...  
Keyword(s):  
Optical Properties

In-vivo and in-vitro study of control of rat skin optical properties by action of 40%-glucose solution

2001 ◽  
Author(s):  
Alexey N. Bashkatov ◽  
Elina A. Genina ◽  
Irina V. Korovina ◽  
Yurii P. Sinichkin ◽  
Olga V. Novikova ◽  
...  
Keyword(s):  
Optical Properties ◽  
Glucose Solution ◽  
In Vitro Study ◽  
Vitro Study ◽  
Rat Skin

Optical properties of selected native and coagulated human brain tissues in vitro in the visible and near infrared spectral range

2002 ◽  
Vol 47 (12) ◽  
pp. 2059-2073 ◽  
Author(s):  
A N Yaroslavsky ◽  
P C Schulze ◽  
I V Yaroslavsky ◽  
R Schober ◽  
F Ulrich ◽  
...  
Keyword(s):  
Optical Properties ◽  
Human Brain ◽  
Spectral Range ◽  
Near Infrared ◽  
Infrared Spectral Range ◽  
Infrared Spectral ◽  
Brain Tissues

Luminescent lanthanide nanoparticle-based imaging enables ultra-sensitive, quantitative and multiplexed in vitro lateral flow immunoassays

Nanoscale ◽  
2021 ◽  
Author(s):  
F. Mousseau ◽  
C. Féraudet Tarisse ◽  
S. Simon ◽  
T. Gacoin ◽  
A. Alexandrou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Lateral Flow ◽  
Biomolecule Detection ◽  
Nanoparticle Probes ◽  
Highly Sensitive

We developed a portable, fast, highly sensitive and quantitative in vitro assay for on-site biomolecule detection by combining the remarkable optical properties of new lanthanide-doped nanoparticle probes with a simple reader coupled to a smartphone.

In vitro optical properties of human and canine brain and urinary bladder tissues at 633 nm

1989 ◽  
Vol 9 (1) ◽  
pp. 37-41 ◽  
Author(s):  
Robert Splinter ◽  
Wai Fung Cheong ◽  
Martin J. C. van Gemert ◽  
A. J. Welch
Keyword(s):  
Optical Properties ◽  
Urinary Bladder ◽  
Canine Brain

Measurement of the Optical Properties of Muscle Tissue In Vivo

2000 ◽  
Author(s):  
P. L. Kopsombut ◽  
D. Willis ◽  
A. E. Schen ◽  
L. X. Xu ◽  
X. Xu
Keyword(s):  
Optical Properties ◽  
Transport Theory ◽  
Rapid Development ◽  
Ccd Camera ◽  
High Sensitivity ◽  
Biological Tissues ◽  
In Vivo Measurement ◽  
Living Tissues

Abstract Along with rapid development of diagnostic and therapeutic applications of lasers in medicine, optical properties of various biological tissues have been extensively studied [1]. Most of the studies were performed in vitro owing to the complexity involved in in vivo measurement. To date, it is well understood that living tissue is an absorbing and scattering heterogeneous medium because of its complex structures including blood network. The transport theory cannot be readily used due to the heterogeneity and the absence of the optical properties of living tissues [2]. In this research, we have developed a procedure for measuring the total attenuation coefficient (μ1) of the exteriorized rat 2-D spinotrapezius muscle in the wavelength ranged from 480–560 nm using the collimated light from a Nitrogen-pumped dye laser and a high-sensitivity CCD camera.

Optics from the Single Cell to the Mesoscale

Ocean Optics ◽  
1994 ◽  
Author(s):  
Andre Morél
Keyword(s):  
Optical Properties ◽  
Single Cells ◽  
Radiant Energy ◽  
Global Scale ◽  
Natural Environments ◽  
Photosynthetic Performances ◽  
The Individual ◽  
Optical Oceanography ◽  
Optical Behavior

The inherent optical properties of a water body (mesoscale), namely, the absorption coefficient, the scattering coefficient, and the volume scattering function combine with the radiant distribution above the sea to yield the apparent optical properties (Preisendorfer, 1961). The radiative transfer equation is the link between these two classes of optical properties. Locally, the inherent properties of seawater are governed by, and strictly result from, the sum of the contributions of the various components, namely, the water itself, the various particles in suspension able to scatter and absorb the radiant energy, and finally the dissolved absorbing compounds. Analyzing these contributions is an important goal of optical oceanography. Among these particles, the phytoplanktonic cells, with their photosynthetic pigments, are of prime importance, in particular in oceanic waters far from terrestrial influence. They also are at the origin of other kinds of particles, such as their own debris, as well as other living “particles” grazing on them (bacteria, flagellates and other heterotrophs). Studying optics at the level of single cells and particles is therefore a requirement for a better understanding of bulk optical properties of oceanic waters. Independently of this goal, the study of the individual cell optics per se is fundamental when analyzing the pathways of radiant energy, in particular the light harvesting capabilities and the photosynthetic performances of various algae or their fluorescence responses. The following presentation is a guidline for readers who will find detailed studies in the classic books Light Scattering by Small Particles by van de Hulst (1957) and Light and Photosynthesis in Aquatic Ecosystems by Kirk (1983), as well as in a paper dealing specifically with the optics of phytoplankton by Morel and Bricaud (1986). This chapter is organized according to the title, with first a summary of the relevant theories to be applied when studying the interaction of an electromagnetic field with a particle, and then, as a transition between this scale and that of in vitro experiments, some results concerning the optical behavior of pure algal suspensions; finally the more complicated situations encountered in natural environments are briefly described to introduce the “nonlinear biological” effect (Smith and Baker, 1978a) upon the optical coefficients for oceanic waters, and to examine some of the empirical relationships, as presently available, between the pigment concentration and the optical properties of the upper ocean at mesoscale and global scale.

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