Two-wavelength interferometric technique for measuring the refractive index of salt-water solutions

1993 ◽  
Vol 32 (21) ◽  
pp. 3992 ◽  
Author(s):  
W. Lu ◽  
W. M. Worek
Keyword(s):  
Refractive Index ◽  
Salt Water ◽  
Water Solutions ◽  
Interferometric Technique

Refractive index of salt water: effect of temperature

1993 ◽  
Vol 2 (3) ◽  
pp. 195-199 ◽  
Author(s):  
Kamal M. Aly ◽  
E. Esmail
Keyword(s):  
Refractive Index ◽  
Salt Water ◽  
Effect Of Temperature ◽  
Water Effect

scholarly journals Measurement of Light Absorbing Aerosols with Folded-Jamin Photothermal Interferometry

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2615 ◽  
Author(s):  
Jeonghoon Lee ◽  
Hans Moosmüller
Keyword(s):  
Refractive Index ◽  
Black Carbon ◽  
Metropolitan Area ◽  
Atmospheric Aerosols ◽  
Urban Areas ◽  
Photothermal Spectroscopy ◽  
Interferometric Technique ◽  
Carbon Particles ◽  
Black Carbon Aerosol ◽  
Absorbing Aerosols

In this study, a photothermal interferometer was developed, based on a folded-Jamin polarization instrument with refractive-index sensitive configuration, in order to characterize light-absorbing aerosols. The feasibility of our interferometric technique was demonstrated by performing photothermal spectroscopy characterizing spark-generated black carbon particles with atmospherically relevant concentrations and atmospheric aerosols in a metropolitan area. The sensitivity of this interferometric system for both laboratory-generated aerosols and atmospheric aerosols was ~ 1 (μg/m3)/μV, which is sufficient for the monitoring of black carbon aerosol in urban areas.

Refractive index measurements and order parameter determination of the liquid crystal p-ethoxybenzilidene-p-n-butylaniline

1981 ◽  
Vol 59 (4) ◽  
pp. 515-520 ◽  
Author(s):  
P. Palffy-Muhoray ◽  
D. A. Balzarini
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Order Parameter ◽  
Orientational Order ◽  
Parameter Determination ◽  
Refractive Indices ◽  
Temperature Changes ◽  
Interferometric Technique ◽  
Anisotropic Fluids

Using a simple new interferometric technique, the ordinary and extraordinary refractive indices of the nematic liquid crystal p-ethoxybenzilidene-p-n-butylaniline have been measured separately as a function of temperature. Changes in the refractive indices have been measured with an accuracy of ±0.005% and the absolute values with an accuracy of ±0.5%. Thermal expansivity data has been obtained by utilizing a specially constructed thermometer containing the sample. By using a recently developed Clausius–Mossotti relation for anisotropic fluids, the effective molecular polarizability and hence the orientational order parameter have been obtained from refractive index and density measurements as a function of temperature.

Refractivity of Molten Nitrates and Chlorides: Binary Mixtures Containing Cesium Ions

1981 ◽  
Vol 36 (5) ◽  
pp. 467-472 ◽  
Author(s):  
Yohji Uchiyama ◽  
Ernest Karawacki
Keyword(s):  
Refractive Index ◽  
Molten Salt ◽  
High Accuracy ◽  
Negative Deviation ◽  
Positive Deviation ◽  
Absorption Bands ◽  
Interferometric Technique ◽  
Cesium Ions ◽  
Salt Mixtures ◽  
Small Negative Deviation

Abstract By using an interferometric technique, the refractive index of some molten salt mixtures containing Cs+ ions was measured with high accuracy: (Li-Cs)NO3, (Na-Cs)NO3, (Ag-Cs)NO3, (Li-Cs)Cl, and also pure RbCl. The isotherms of molar refractivity show a small negative deviation from additivity in the (Li-Cs)NO3 and (Li-Cs)Cl systems and a positive deviation in the (Ag-Cs)NO3 mixture. A tentative attempt was made to relate the excess molar refractivities with the absorption bands of the ions.

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