Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment
Ultrafine 50 nm line and space nanogratings were fabricated using nanoimprint lithography, and were further used as an alignment layer for liquid crystals. The surface morphologies of the nanogratings were characterized and their surface energies were estimated through the measurement of the contact...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/97532 http://hdl.handle.net/10220/10668 |
| _version_ | 1826117231001468928 |
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| author | Leong, Eunice Sok Ping Kustandi, Tanu Suryadi Sun, Xiaowei Liu, Yan Jun Loh, Wei Wei Teng, Jing Hua |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Leong, Eunice Sok Ping Kustandi, Tanu Suryadi Sun, Xiaowei Liu, Yan Jun Loh, Wei Wei Teng, Jing Hua |
| author_sort | Leong, Eunice Sok Ping |
| collection | NTU |
| description | Ultrafine 50 nm line and space nanogratings were fabricated using nanoimprint lithography, and were further used as an alignment layer for liquid crystals. The surface morphologies of the nanogratings were characterized and their surface energies were estimated through the measurement of the contact angles for two different liquids. Experimental results show that the surface energies of the nanogratings are anisotropic: the surface free energy towards the direction parallel to the grating lines is higher than that in the direction perpendicular to the grating lines. Electro-optical characteristics were tested from a twisted nematic liquid crystal cell, which was assembled using two identical nanogratings. Experimental results show that such a kind of nanograting is promising as an alternative to the conventional rubbing process for liquid crystal alignment. |
| first_indexed | 2024-10-01T04:24:14Z |
| format | Journal Article |
| id | ntu-10356/97532 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:24:14Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/975322020-03-07T14:02:47Z Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment Leong, Eunice Sok Ping Kustandi, Tanu Suryadi Sun, Xiaowei Liu, Yan Jun Loh, Wei Wei Teng, Jing Hua School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Ultrafine 50 nm line and space nanogratings were fabricated using nanoimprint lithography, and were further used as an alignment layer for liquid crystals. The surface morphologies of the nanogratings were characterized and their surface energies were estimated through the measurement of the contact angles for two different liquids. Experimental results show that the surface energies of the nanogratings are anisotropic: the surface free energy towards the direction parallel to the grating lines is higher than that in the direction perpendicular to the grating lines. Electro-optical characteristics were tested from a twisted nematic liquid crystal cell, which was assembled using two identical nanogratings. Experimental results show that such a kind of nanograting is promising as an alternative to the conventional rubbing process for liquid crystal alignment. 2013-06-25T08:15:19Z 2019-12-06T19:43:38Z 2013-06-25T08:15:19Z 2019-12-06T19:43:38Z 2012 2012 Journal Article Liu, Y. J., Loh, W. W., Leong, E. S. P., Kustandi, T. S., Sun, X., & Teng, J. H. (2012). Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment. Nanotechnology, 23(46). 0957-4484 https://hdl.handle.net/10356/97532 http://hdl.handle.net/10220/10668 10.1088/0957-4484/23/46/465302 en Nanotechnology © 2012 IOP Publishing Ltd. |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Leong, Eunice Sok Ping Kustandi, Tanu Suryadi Sun, Xiaowei Liu, Yan Jun Loh, Wei Wei Teng, Jing Hua Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment |
| title | Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment |
| title_full | Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment |
| title_fullStr | Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment |
| title_full_unstemmed | Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment |
| title_short | Nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment |
| title_sort | nanoimprinted ultrafine line and space nanogratings for liquid crystal alignment |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/97532 http://hdl.handle.net/10220/10668 |
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