Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry.
Birefringence in the mesophase of 4-cyano-4′-n-pentylbiphenyl (5CB) was measured directly under a magnetic field (1200 and 2000 gauss) as a function of temperature with field parallel and perpendicular to the optical axis. Electrical dinole moments of 5CB and benzonitrile were calculated with the Me...
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1989
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01677322_v44_n1_p63_LopezIqlesias http://hdl.handle.net/20.500.12110/paper_01677322_v44_n1_p63_LopezIqlesias |
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paper:paper_01677322_v44_n1_p63_LopezIqlesias2023-06-08T15:16:54Z Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. Barón, Máximo Birefringence in the mesophase of 4-cyano-4′-n-pentylbiphenyl (5CB) was measured directly under a magnetic field (1200 and 2000 gauss) as a function of temperature with field parallel and perpendicular to the optical axis. Electrical dinole moments of 5CB and benzonitrile were calculated with the Mechetti-Barón equations from measurements at three temperatures. Molecular geometries were examined with a semiempirical procedure (AMPAC). The results suqgest that thermal stirring and internal rotations appear to overcome orientational effects of the applied field. © 1989. Fil:Barón, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1989 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01677322_v44_n1_p63_LopezIqlesias http://hdl.handle.net/20.500.12110/paper_01677322_v44_n1_p63_LopezIqlesias |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
Birefringence in the mesophase of 4-cyano-4′-n-pentylbiphenyl (5CB) was measured directly under a magnetic field (1200 and 2000 gauss) as a function of temperature with field parallel and perpendicular to the optical axis. Electrical dinole moments of 5CB and benzonitrile were calculated with the Mechetti-Barón equations from measurements at three temperatures. Molecular geometries were examined with a semiempirical procedure (AMPAC). The results suqgest that thermal stirring and internal rotations appear to overcome orientational effects of the applied field. © 1989. |
| author |
Barón, Máximo |
| spellingShingle |
Barón, Máximo Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. |
| author_facet |
Barón, Máximo |
| author_sort |
Barón, Máximo |
| title |
Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. |
| title_short |
Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. |
| title_full |
Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. |
| title_fullStr |
Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. |
| title_full_unstemmed |
Liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. |
| title_sort |
liquid crystal birefringence and electric dipole moment relationship with temperature, weak magnetic field and molecular geometry. |
| publishDate |
1989 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01677322_v44_n1_p63_LopezIqlesias http://hdl.handle.net/20.500.12110/paper_01677322_v44_n1_p63_LopezIqlesias |
| work_keys_str_mv |
AT baronmaximo liquidcrystalbirefringenceandelectricdipolemomentrelationshipwithtemperatureweakmagneticfieldandmoleculargeometry |
| _version_ |
1768546672006135808 |