Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field
The dynamic behavior of a nematic liquid crystal with added carbon nanotubes (CNTs) in an electric field was analyzed. A theoretical model based on elastic continuum theory was developed and the relaxation times of nematic liquid crystals with CNTs were evaluated. Experiments made with single-walled...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2018-01-01
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| Series: | Beilstein Journal of Nanotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjnano.9.25 |
| _version_ | 1818276942556692480 |
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| author | Emil Petrescu Cristina Cirtoaje |
| author_facet | Emil Petrescu Cristina Cirtoaje |
| author_sort | Emil Petrescu |
| collection | DOAJ |
| description | The dynamic behavior of a nematic liquid crystal with added carbon nanotubes (CNTs) in an electric field was analyzed. A theoretical model based on elastic continuum theory was developed and the relaxation times of nematic liquid crystals with CNTs were evaluated. Experiments made with single-walled carbon nanotubes dispersed in nematic 4-cyano-4’-pentylbiphenyl (5CB) indicated a significant difference of the relaxation time when compared to pure liquid crystal. We also noticed that the relaxation time when the field is switched off depends on how long the field was applied. It is shorter when the field is switched off immediately after application and longer when the field was applied for at least one hour. |
| first_indexed | 2024-12-12T22:53:40Z |
| format | Article |
| id | doaj.art-767e02cde3c341e9a21f262dbabbc2ce |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-12-12T22:53:40Z |
| publishDate | 2018-01-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-767e02cde3c341e9a21f262dbabbc2ce2022-12-22T00:09:00ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862018-01-019123324110.3762/bjnano.9.252190-4286-9-25Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric fieldEmil Petrescu0Cristina Cirtoaje1University Politehnica of Bucharest, Department of Physics, Splaiul Independenţei 313, 060042, Bucharest, RomaniaUniversity Politehnica of Bucharest, Department of Physics, Splaiul Independenţei 313, 060042, Bucharest, RomaniaThe dynamic behavior of a nematic liquid crystal with added carbon nanotubes (CNTs) in an electric field was analyzed. A theoretical model based on elastic continuum theory was developed and the relaxation times of nematic liquid crystals with CNTs were evaluated. Experiments made with single-walled carbon nanotubes dispersed in nematic 4-cyano-4’-pentylbiphenyl (5CB) indicated a significant difference of the relaxation time when compared to pure liquid crystal. We also noticed that the relaxation time when the field is switched off depends on how long the field was applied. It is shorter when the field is switched off immediately after application and longer when the field was applied for at least one hour.https://doi.org/10.3762/bjnano.9.25Fréedericksz transition, nanotubes |
| spellingShingle | Emil Petrescu Cristina Cirtoaje Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field Beilstein Journal of Nanotechnology Fréedericksz transition, nanotubes |
| title | Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field |
| title_full | Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field |
| title_fullStr | Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field |
| title_full_unstemmed | Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field |
| title_short | Dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field |
| title_sort | dynamic behavior of a nematic liquid crystal with added carbon nanotubes in an electric field |
| topic | Fréedericksz transition, nanotubes |
| url | https://doi.org/10.3762/bjnano.9.25 |
| work_keys_str_mv | AT emilpetrescu dynamicbehaviorofanematicliquidcrystalwithaddedcarbonnanotubesinanelectricfield AT cristinacirtoaje dynamicbehaviorofanematicliquidcrystalwithaddedcarbonnanotubesinanelectricfield |