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Refractive indices of liquid crystals and pure fluids near phase transitions Palffy-Muhoray, Peter
Abstract
Interferometric measurements to determine the refractive indices of the nematic liquid crystals EBBA and BEPC as a function of temperature are described utilizing modified Rayleigh and conoscopic interferometers. Theory is presented relating the refractive indices and density to the orientational order, local field parameter and molecular properties. The results of simple thermal expansivity measurements are also given for EBBA. The Lorentz-Lorenz coefficient for SF₆, and GeH₄, has been determined from refractive index and density measurements. The method utilizes a prism shaped high pressure cell which can be removed from a temperature controlled holder and weighed on a precision balance. The results indicate a variation of 0.5% for SF₆, and 0.8% for GeH₄, over the density range covered.
Item Metadata
Title |
Refractive indices of liquid crystals and pure fluids near phase transitions
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1977
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Description |
Interferometric measurements to determine the refractive indices
of the nematic liquid crystals EBBA and BEPC as a function of temperature are described utilizing modified Rayleigh and conoscopic interferometers. Theory is presented relating the refractive indices and density to the orientational order, local field parameter and molecular
properties. The results of simple thermal expansivity measurements
are also given for EBBA.
The Lorentz-Lorenz coefficient for SF₆, and GeH₄, has been
determined from refractive index and density measurements. The method
utilizes a prism shaped high pressure cell which can be removed from
a temperature controlled holder and weighed on a precision balance.
The results indicate a variation of 0.5% for SF₆, and 0.8% for GeH₄,
over the density range covered.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-02-25
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0085754
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.