Pigment mass density and refractive index determination from optical measurements

1997 ◽  
Vol 9 (7) ◽  
pp. 1661-1670 ◽  
Author(s):  
William E Vargas ◽  
Gunnar A Niklasson
Keyword(s):  
Refractive Index ◽  
Mass Density ◽  
Optical Measurements

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.

scholarly journals Methotrexate Detection Based On The Optical Properties Of Carbon Nanotubes And Silver Nano Particles Nanocomposites

2021 ◽  
Vol 7 (3) ◽  
pp. 1323
Author(s):  
Fida Mohammad Mohammadi
Keyword(s):  
Carbon Nanotubes ◽  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Nano Particles ◽  
Optical Measurements ◽  
Carbon Electrode ◽  
Linear Absorption Coefficient ◽  
Linear Absorption ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

<p>In this experiment, glassy carbon electrode with multi walled carbon nanotubes<br />nanocomposites have been prepared in different concentration in order to see if<br />methotrexate is anticancer drug. For the purpose of characterizing the structures,<br />nanocomposites were analyzed by scanning electron microscope. Optical measurements of different concentrations were conducted by z-scan method and the results show that by rising the concentration, nonlinear refractive index and linear absorption coefficient increases. The values of nonlinear refractive index are in orders of 𝟏𝟎−𝟖 𝒄𝒎𝟐 𝒘.</p>

scholarly journals Optical properties of AlN layers obtained by magnetron sputtering

2018 ◽  
Vol 36 (4) ◽  
pp. 717-721
Author(s):  
Piotr Potera ◽  
Grzegorz Wisz ◽  
Łukasz Szyller
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Magnetron Sputtering ◽  
Energy Gap ◽  
Optical Measurements ◽  
Transmission Spectra ◽  
Glass Substrates ◽  
Different Content

AbstractThe growth of AlN layers on glass substrates using magnetron sputtering method was performed and the grown layers were subjected to optical measurements. Transmission spectra of the layers grown at different content of N2 in the atmosphere were obtained. The transmission spectra as well as energy gap depended on N2 content. The annealing of the layers in air led to transmission changes and influenced energy gap and refractive index values.

Thermal equilibration behind an ionizing shock

1966 ◽  
Vol 26 (3) ◽  
pp. 459-479 ◽  
Author(s):  
H. Wong ◽  
D. Bershader
Keyword(s):  
Refractive Index ◽  
Theoretical Analysis ◽  
Thermal Equilibrium ◽  
Mass Density ◽  
Relaxation Times ◽  
Ionization Mechanism ◽  
Density Profiles ◽  
Physical Mechanisms ◽  
Thermal Equilibration ◽  
Equilibrium Region

The physical mechanisms underlying the relaxation process leading to thermal equilibrium behind ionizing shock waves in argon have been studied through use of optical techniques. The non-equilibrium condition in the relaxation region was investigated experimentally by measuring the shift in the fringes due to a change in the refractive index of the medium with a Mach–Zehnder interferometer. Both electron- and mass-density profiles from the shock front to the equilibrium region were determined. The experimental work has been supplemented by a theoretical analysis of the ionization mechanism to explain the measured profiles and relaxation times.

scholarly journals A fragmentation model of dust grains in the inner coma of Halley. A possible explanation of the color effect

1996 ◽  
Vol 150 ◽  
pp. 387-390
Author(s):  
B. Goidet-Devel ◽  
J. Clairemidi ◽  
G. Moreels ◽  
P. Rousselot
Keyword(s):  
Refractive Index ◽  
Mass Density ◽  
Scattered Light ◽  
Particle Radius ◽  
Fragmentation Model ◽  
Dust Grains ◽  
Color Effect ◽  
Dependent Mass ◽  
Good Agreement

AbstractA model to describe the intensity of dust scattered light observed by the spectrometer TKS during the Vega/Halley encounter is presented. Good agreement is obtained when using a particle radius dependent mass density. The color effect is reproduced if the refractive index of tholin is adopted.

Refractive index of thin films of SiO_2, ZrO_2, and HfO_2 as a function of the films’ mass density

2005 ◽  
Vol 44 (15) ◽  
pp. 3006 ◽  
Author(s):  
Martin Jerman ◽  
Zhaohui Qiao ◽  
Dieter Mergel
Keyword(s):  
Thin Films ◽  
Refractive Index ◽  
Mass Density

Optical measurements of fluctuation spectra of the refractive index in model convection

1976 ◽  
Vol 19 (9) ◽  
pp. 1184-1188
Author(s):  
O. N. Emaleev ◽  
V. P. Lukin ◽  
V. V. Pokasov ◽  
V. M. Sazanovich ◽  
S. S. Khmelevtsov
Keyword(s):  
Refractive Index ◽  
Optical Measurements

scholarly journals Side-Chain Influence on the Mass Density and Refractive Index of Polyfluorenes and Star-Shaped Oligofluorene Truxenes

2015 ◽  
Vol 119 (38) ◽  
pp. 22102-22107 ◽  
Author(s):  
Paulina O. Morawska ◽  
Yue Wang ◽  
Arvydas Ruseckas ◽  
Clara Orofino-Peña ◽  
Alexander L. Kanibolotsky ◽  
...  
Keyword(s):  
Refractive Index ◽  
Mass Density ◽  
Side Chain
Sign in / Sign up

Export Citation Format

Share Document