scholarly journals Integrated Continuum Dielectric Approaches To Treat Molecular Polarizability and the Condensed Phase: Refractive Index and Implicit Solvation

2009 ◽  
Vol 5 (7) ◽  
pp. 1785-1802 ◽  
Author(s):  
Jean-François Truchon ◽  
Anthony Nicholls ◽  
Benoît Roux ◽  
Radu I. Iftimie ◽  
Christopher I. Bayly
Keyword(s):  
Refractive Index ◽  
Condensed Phase ◽  
Molecular Polarizability ◽  
Implicit Solvation

Temperature Coefficient of the Refractive Index of H2O and D2O and Proposed Models of Water Structure

1980 ◽  
Vol 35 (11) ◽  
pp. 1171-1177 ◽  
Author(s):  
G. Abbate ◽  
U. Bernini ◽  
E. Ragozzino ◽  
F. Somma
Keyword(s):  
Experimental Data ◽  
Refractive Index ◽  
Temperature Coefficient ◽  
Liquid Water ◽  
Structural Model ◽  
Deuterium Oxide ◽  
Water Structure ◽  
Experimental Results ◽  
Molecular Polarizability ◽  
Wide Range

Abstract The temperature coefficient of the refractive index, (∂n/∂T)p, has been measured for deuterium oxide. The observed values are considered together with those previously obtained for water. The experimental data cannot be explained with the best known models of molecular polarizability, at least in the approximation generally used in these models. Therfore they are discussed on the basis of a different approximation, suggested by a well-known structural model of liquid water. It is shown that the experimental results are very well explained, in a wide range of temperature, with the hypothesis of the existence of "structural voids".

scholarly journals Спекл-интерферометрическая методика исследования пламени

2020 ◽  
Vol 90 (6) ◽  
pp. 1001
Author(s):  
А.Ю. Попов ◽  
А.В. Тюрин ◽  
В.Г. Ткаченко ◽  
А.Я. Бекшаев ◽  
В.В. Калинчак ◽  
...  
Keyword(s):  
Refractive Index ◽  
Measurement Technique ◽  
Condensed Phase ◽  
High Speed ◽  
Flame Structure ◽  
Speckle Interferometry ◽  
Spatiotemporal Distribution ◽  
Single Frame ◽  
Automated Processing ◽  
Intrinsic Radiation

Methods are described for recording and automated processing of the data obtained from phase-modulated speckle interferometry of optically dense (opaque to the intrinsic radiation) flames containing a condensed phase. The use of a high-speed single-frame measurement technique and special processing procedures makes it possible to determine the spatiotemporal distribution of the refractive index, based on which the flame structure can be identified. As an example, the results of investigation of the torch formed by burning a stationary medical paraffin droplet are presented.

Frequency-Dependent Molecular Polarizability and Refractive Index:  Are Substituent Contributions Additive?

1999 ◽  
Vol 103 (12) ◽  
pp. 1818-1821 ◽  
Author(s):  
Kristian O. Sylvester-Hvid ◽  
Per-Olof Åstrand ◽  
Mark A. Ratner ◽  
Kurt V. Mikkelsen
Keyword(s):  
Refractive Index ◽  
Molecular Polarizability ◽  
Frequency Dependent

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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