Measurement of LC Molecular Length by Simple Optical Device
Date Issued
2005
Date
2005
Author(s)
Li, Cheng-Kang
DOI
en-US
Abstract
In our experiments, we will show how to calculate the liquid crystal (LC) molecule length by observing the reflectivity of thin LC films. We measure three LCs, 9O.4, 7O.4 and 6O.4, to compare their molecule length. Since we still need the information of ordinary refraction index (no), we observe the interference patterns reflected from the LC cell. We can measure no by comparing the patterns which we stimulated with the interference patterns we observed. The accuracy of no can be achieved to ± 0.003. Thus the measurement accuracy of the LC molecule length can be achieved to angstrom scale.
Subjects
液晶
分子長度
折射率
LC
liquid crystal
refraction index
molecular length
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-94-R92222038-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):59e4d89de864ae5ba683ec9ab61e7af0