Light-control of Liquid Crystal Alignment from Vertical to Planar
Continuous or discontinuous transition from vertical to planar alignment was found in nematic cells,containing polyimide alignment layer exposed to linear polarized UV light, depending on whether the alignment layer was mechanically rubbed or not prior the illumination. The polyimide material is des...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC.
2013
|
| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/5467/1/vertical_to_planar.pdf |
| _version_ | 1796989964171345920 |
|---|---|
| author | Hegde, Gurumurthy Ata Alla, Rasha Komitov, Lachezar |
| author_facet | Hegde, Gurumurthy Ata Alla, Rasha Komitov, Lachezar |
| author_sort | Hegde, Gurumurthy |
| collection | UMP |
| description | Continuous or discontinuous transition from vertical to planar alignment was found in nematic cells,containing polyimide alignment layer exposed to linear polarized UV light, depending on whether the alignment layer was mechanically rubbed or not prior the illumination. The polyimide material is designed originally to promote vertical alignment when deposited onto the inner cell substrates’ surface. The mechanism behind these observations is complicated. It includes inclination of the alkyl side chains of the polyimide alignment layer towards the rubbing direction and the bond breaking process due to UV illumination which are considered as the key factors for occurrence of such alignment transition. |
| first_indexed | 2024-03-06T11:44:48Z |
| format | Article |
| id | UMPir5467 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:44:48Z |
| publishDate | 2013 |
| publisher | AIP Publishing LLC. |
| record_format | dspace |
| spelling | UMPir54672018-05-17T07:11:27Z http://umpir.ump.edu.my/id/eprint/5467/ Light-control of Liquid Crystal Alignment from Vertical to Planar Hegde, Gurumurthy Ata Alla, Rasha Komitov, Lachezar QC Physics Continuous or discontinuous transition from vertical to planar alignment was found in nematic cells,containing polyimide alignment layer exposed to linear polarized UV light, depending on whether the alignment layer was mechanically rubbed or not prior the illumination. The polyimide material is designed originally to promote vertical alignment when deposited onto the inner cell substrates’ surface. The mechanism behind these observations is complicated. It includes inclination of the alkyl side chains of the polyimide alignment layer towards the rubbing direction and the bond breaking process due to UV illumination which are considered as the key factors for occurrence of such alignment transition. AIP Publishing LLC. 2013-06-12 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5467/1/vertical_to_planar.pdf Hegde, Gurumurthy and Ata Alla, Rasha and Komitov, Lachezar (2013) Light-control of Liquid Crystal Alignment from Vertical to Planar. Applied Physics Letters, 102 (23). pp. 233505-1. ISSN 0003-6951 (print); 1077-3118 (online). (Published) http://dx.doi.org/10.1063/1.4808383 DOI: 10.1063/1.4808383 |
| spellingShingle | QC Physics Hegde, Gurumurthy Ata Alla, Rasha Komitov, Lachezar Light-control of Liquid Crystal Alignment from Vertical to Planar |
| title | Light-control of Liquid Crystal Alignment from Vertical to Planar |
| title_full | Light-control of Liquid Crystal Alignment from Vertical to Planar |
| title_fullStr | Light-control of Liquid Crystal Alignment from Vertical to Planar |
| title_full_unstemmed | Light-control of Liquid Crystal Alignment from Vertical to Planar |
| title_short | Light-control of Liquid Crystal Alignment from Vertical to Planar |
| title_sort | light control of liquid crystal alignment from vertical to planar |
| topic | QC Physics |
| url | http://umpir.ump.edu.my/id/eprint/5467/1/vertical_to_planar.pdf |
| work_keys_str_mv | AT hegdegurumurthy lightcontrolofliquidcrystalalignmentfromverticaltoplanar AT ataallarasha lightcontrolofliquidcrystalalignmentfromverticaltoplanar AT komitovlachezar lightcontrolofliquidcrystalalignmentfromverticaltoplanar |