| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000329428 |
| ISSN: | 0103-9733 |
| Autores: | Vijayakumar. V.N1 Madhu Mohan, M.L.N1 |
| Instituciones: | 1Bannari Amman Institute of Technology, Liquid Crystal Research Laboratory, Sathyamangalam. India |
| Año: | 2009 |
| Periodo: | Dic |
| Volumen: | 39 |
| Número: | 4 |
| Paginación: | 677-683 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | A novel series of double hydrogen bonded liquid crystals have been isolated. Hydrogen bond was formed between non mesogen chiral ingredient levo tartaric acid (LTA) and mesogenic undecyloxy benzoic acids (11BA) Thermal and electrical properties exhibited by levo tartaric acid and undecyloxy benzoic acid (LTA+11BA) were discussed. Interesting feature of the present investigation was observation of an optical shuttering action in LTA+11BA hydrogen bonded complex on application of a stipulated applied dc bias voltage. By enhancement of the dc bias voltage the mesogen behaves like an optical shutter, thus this hydrogen bonded complex mesogen acts as an effective light modulator. It was noticed that this action of shuttering was reversible, in the sense that when applied bias voltage was removed the original texture was restored. Experimental results relating to textures, optical tilt, dielectric studies and optical shuttering action were presented. This optical shutter property of the mesogen can be exploited for commercial and display device applications |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Física de materia condensada, Optica, Enlaces de hidrógeno, Obturador óptico, Modulador de luz |
| Keyword: | Physics and astronomy, Condensed matter physics, Optics, Hydrogen bonds, Optical shutter, Light modulator |
| Texto completo: | Texto completo (Ver HTML) |
