Integral Refractive Index Imaging of Flowing Cell Nuclei

2018 ◽  
Author(s):  
Gili Dardikman ◽  
Yoav N. Nygate ◽  
Itay Barnea ◽  
Nir A. Turko ◽  
Gyanendra Singh ◽  
...  
Keyword(s):  
Refractive Index ◽  
Cell Nuclei

scholarly journals Integral refractive index imaging of flowing cell nuclei using quantitative phase microscopy combined with fluorescence microscopy

2018 ◽  
Vol 9 (3) ◽  
pp. 1177 ◽  
Author(s):  
Gili Dardikman ◽  
Yoav N. Nygate ◽  
Itay Barnea ◽  
Nir A. Turko ◽  
Gyanendra Singh ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fluorescence Microscopy ◽  
Cell Nuclei ◽  
Quantitative Phase ◽  
Phase Microscopy ◽  
Quantitative Phase Microscopy

scholarly journals Cell nuclei have lower refractive index and mass density than cytoplasm

2016 ◽  
Vol 9 (10) ◽  
pp. 1068-1076 ◽  
Author(s):  
Mirjam Schürmann ◽  
Jana Scholze ◽  
Paul Müller ◽  
Jochen Guck ◽  
Chii J. Chan
Keyword(s):  
Refractive Index ◽  
Mass Density ◽  
Cell Nuclei ◽  
Lower Refractive Index

scholarly journals Deep-Learning-Based Label-Free Segmentation of Cell Nuclei in Time-Lapse Refractive Index Tomograms

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 83449-83460 ◽  
Author(s):  
Jimin Lee ◽  
Hyejin Kim ◽  
Hyungjoo Cho ◽  
YoungJu Jo ◽  
Yujin Song ◽  
...  
Keyword(s):  
Refractive Index ◽  
Deep Learning ◽  
Time Lapse ◽  
Label Free ◽  
Cell Nuclei

Intranuclear Crystals in Regenerating Canine Kidneys

1973 ◽  
Vol 31 ◽  
pp. 412-413
Author(s):  
D.G. Osborne ◽  
L.J. McCormack ◽  
M.O. Magnusson ◽  
W.S. Kiser
Keyword(s):  
Epithelial Cell ◽  
Epithelial Cells ◽  
Tubular Epithelial Cell ◽  
Tubular Epithelial Cells ◽  
Cell Nuclei ◽  
Crystalline Structures ◽  
Small Crystals ◽  
Membrane Bound

During a project in which regenerative changes were studied in autotransplanted canine kidneys, intranuclear crystals were seen in a small number of tubular epithelial cells. These crystalline structures were seen in the control specimens and also in regenerating specimens; the main differences being in size and number of them. The control specimens showed a few tubular epithelial cell nuclei almost completely occupied by large crystals that were not membrane bound. Subsequent follow-up biopsies of the same kidneys contained similar intranuclear crystals but of a much smaller size. Some of these nuclei contained several small crystals. The small crystals occurred at one week following transplantation and were seen even four weeks following transplantation. As time passed, the small crystals appeared to fuse to form larger crystals.

TEM characterization of proton-exchanged LiNbO3 optical waveguides

1986 ◽  
Vol 44 ◽  
pp. 480-481
Author(s):  
W. E. Lee
Keyword(s):  
Refractive Index ◽  
Benzoic Acid ◽  
Optical Waveguides ◽  
Total Internal Reflection ◽  
Index Of Refraction ◽  
Optical Measurements ◽  
Lithium Ions ◽  
Wide Channel ◽  
Tem Characterization

An optical waveguide consists of a several-micron wide channel with a slightly different index of refraction than the host substrate; light can be trapped in the channel by total internal reflection.Optical waveguides can be formed from single-crystal LiNbO3 using the proton exhange technique. In this technique, polished specimens are masked with polycrystal1ine chromium in such a way as to leave 3-13 μm wide channels. These are held in benzoic acid at 249°C for 5 minutes allowing protons to exchange for lithium ions within the channels causing an increase in the refractive index of the channel and creating the waveguide. Unfortunately, optical measurements often reveal a loss in waveguiding ability up to several weeks after exchange.

Light microscopy of ceramics

1993 ◽  
Vol 51 ◽  
pp. 908-909
Author(s):  
Walter C. McCrone
Keyword(s):  
Refractive Index ◽  
Light Microscopy ◽  
Light Microscope ◽  
Polarized Light ◽  
Refractive Indices ◽  
Complete Coverage ◽  
The Subject ◽  
Lower Refractive Index

An excellent chapter on this subject by V.D. Fréchette appeared in a book edited by L.L. Hench and R.W. Gould in 1971 (1). That chapter with the references cited there provides a very complete coverage of the subject. I will add a more complete coverage of an important polarized light microscope (PLM) technique developed more recently (2). Dispersion staining is based on refractive index and its variation with wavelength (dispersion of index). A particle of, say almandite, a garnet, has refractive indices of nF = 1.789 nm, nD = 1.780 nm and nC = 1.775 nm. A Cargille refractive index liquid having nD = 1.780 nm will have nF = 1.810 and nC = 1.768 nm. Almandite grains will disappear in that liquid when observed with a beam of 589 nm light (D-line), but it will have a lower refractive index than that liquid with 486 nm light (F-line), and a higher index than that liquid with 656 nm light (C-line).

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