Studies in Solid-State Science. XI. A Technique of Measuring the Transparency of Materials as a Function of Temperature
Abstract
A simple technique has been developed to measure the transparency of materials at any specific wavelength (ultraviolet to near infrared) versus temperature. The procedure involves heating a sample between calcium fluoride plates in a brass holder placed in a Cary-14 spectrophotometer. Changes in transmittance at a fixed wavelength are recorded continuously as the temperature is allowed to change slowly. As an illustration of the procedure, the transmission properties of the nematic liquid crystal butyl p-(p- ethoxyphenoxycarbonyl)-phenyl carbonate in its various states are described. For comparative purposes a description of the transmitance of phenyl benzoate (which does not possess a mesophase) is also included.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1970
- Accession Number
- AD0874877
Entities
People
- Edward J. Poziomek
- Raymond A. Mackay
- Thaddeus J. Novak