Conoscopic analysis of electric field driven planar aligned nematic liquid crystal
This paper illustrates the conoscopic observation of a molecular reconstruction occurring across a nematic liquid crystal (NLC) medium in the presence of an external electric field. Conoscopy is an optical interferometric method, employed to determine the orientation of an optic axis in uniaxial cry...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/98624 http://hdl.handle.net/10220/19618 |
| _version_ | 1826122858518020096 |
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| author | Ranjini, Radhakrishnan Matham, Murukeshan Vadakke Nguyen, Nam-Trung |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Ranjini, Radhakrishnan Matham, Murukeshan Vadakke Nguyen, Nam-Trung |
| author_sort | Ranjini, Radhakrishnan |
| collection | NTU |
| description | This paper illustrates the conoscopic observation of a molecular reconstruction occurring across a nematic liquid crystal (NLC) medium in the presence of an external electric field. Conoscopy is an optical interferometric method, employed to determine the orientation of an optic axis in uniaxial crystals. Here a planar aligned NLC medium is used, and the topological changes with respect to various applied voltages are monitored simultaneously. Homogenous planar alignment is obtained by providing suitable surface treatments to the ITO coated cell walls. The variation in the conoscopic interferometric patterns clearly demonstrates the transition from planar to homeotropic state through various intermediate states. |
| first_indexed | 2024-10-01T05:55:06Z |
| format | Journal Article |
| id | ntu-10356/98624 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:55:06Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/986242023-03-04T17:15:09Z Conoscopic analysis of electric field driven planar aligned nematic liquid crystal Ranjini, Radhakrishnan Matham, Murukeshan Vadakke Nguyen, Nam-Trung School of Mechanical and Aerospace Engineering DRNTU::Engineering This paper illustrates the conoscopic observation of a molecular reconstruction occurring across a nematic liquid crystal (NLC) medium in the presence of an external electric field. Conoscopy is an optical interferometric method, employed to determine the orientation of an optic axis in uniaxial crystals. Here a planar aligned NLC medium is used, and the topological changes with respect to various applied voltages are monitored simultaneously. Homogenous planar alignment is obtained by providing suitable surface treatments to the ITO coated cell walls. The variation in the conoscopic interferometric patterns clearly demonstrates the transition from planar to homeotropic state through various intermediate states. Published version 2014-06-10T04:25:14Z 2019-12-06T19:57:50Z 2014-06-10T04:25:14Z 2019-12-06T19:57:50Z 2014 2014 Journal Article Ranjini, R., Matham, M. V., & Nguyen, N.-T. (2014). Conoscopic analysis of electric field driven planar aligned nematic liquid crystal. Applied Optics, 53(13), 2773-2776. https://hdl.handle.net/10356/98624 http://hdl.handle.net/10220/19618 10.1364/AO.53.002773 en Applied optics © 2014 Optical Society of America. This paper was published in Applied Optics and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [http://dx.doi.org/10.1364/AO.53.002773]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | DRNTU::Engineering Ranjini, Radhakrishnan Matham, Murukeshan Vadakke Nguyen, Nam-Trung Conoscopic analysis of electric field driven planar aligned nematic liquid crystal |
| title | Conoscopic analysis of electric field driven planar aligned nematic liquid crystal |
| title_full | Conoscopic analysis of electric field driven planar aligned nematic liquid crystal |
| title_fullStr | Conoscopic analysis of electric field driven planar aligned nematic liquid crystal |
| title_full_unstemmed | Conoscopic analysis of electric field driven planar aligned nematic liquid crystal |
| title_short | Conoscopic analysis of electric field driven planar aligned nematic liquid crystal |
| title_sort | conoscopic analysis of electric field driven planar aligned nematic liquid crystal |
| topic | DRNTU::Engineering |
| url | https://hdl.handle.net/10356/98624 http://hdl.handle.net/10220/19618 |
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