Modified Method for Measuring the Magnitude of Spontaneous Polarization of Ferroelectric Liquid Crystals
The existing methods for measuring the magnitude of spontaneous PS polarization in ferroelectric liquid crystals are analyzed. It is shown that the above methods do not allow a sufficient PS measurement accuracy, as a result of the available active component of conductivity due to the influence of t...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Sumy State University
2017-07-01
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| Series: | Журнал нано- та електронної фізики |
| Subjects: | |
| Online Access: | http://jnep.sumdu.edu.ua:8080/download/numbers/2017/4/articles/jnep_V9_04015.pdf |
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| Summary: | The existing methods for measuring the magnitude of spontaneous PS polarization in ferroelectric liquid crystals are analyzed. It is shown that the above methods do not allow a sufficient PS measurement accuracy, as a result of the available active component of conductivity due to the influence of their own or deliberately introduced impurities. A modified method of PS measuring value by means of a triangular voltage signal is suggested. The difference of this method of PS measuring value from other methods is that not the charge in the vicinity of the peak current is analyzed, caused by the repolarization process, but the value of the maximum current. It is shown how this method eliminates the currents analysis caused by the presence of different types of impurities. |
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| ISSN: | 2077-6772 |