Self-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surface
The development of tunable photonic devices is strategic for miniaturized optical instrumentation and sensing systems. Exploiting the birefringence variation of liquid crystals (LCs) instead of MEMS actuation in such devices could bring better spectral stability and lower power consumption. However,...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Applied Physics Express |
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| Online Access: | https://doi.org/10.35848/1882-0786/adb3eb |
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| author | Hugo Villanti Sébastien Plissard Jean-Baptiste Doucet Alexandre Arnoult Benjamin Reig Laurent Dupont Véronique Bardinal |
| author_facet | Hugo Villanti Sébastien Plissard Jean-Baptiste Doucet Alexandre Arnoult Benjamin Reig Laurent Dupont Véronique Bardinal |
| author_sort | Hugo Villanti |
| collection | DOAJ |
| description | The development of tunable photonic devices is strategic for miniaturized optical instrumentation and sensing systems. Exploiting the birefringence variation of liquid crystals (LCs) instead of MEMS actuation in such devices could bring better spectral stability and lower power consumption. However, aligning LCs inside a III–V semiconductor device is tricky. We demonstrate that self-assembled gallium arsenide (GaAs) quantum dashes (QDHs) could serve as direct planar aligners for LC nematic molecules. The alignment quality and birefringence variation of a LC-microcell embedding QDHs are shown to be similar to those of a polymer nanograting-based reference, with the added advantage of better electrical performance. |
| format | Article |
| id | doaj-art-b6a044bd2f8c4ea298ce48d56d56dda5 |
| institution | DOAJ |
| issn | 1882-0786 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Applied Physics Express |
| spelling | doaj-art-b6a044bd2f8c4ea298ce48d56d56dda52025-08-20T02:45:41ZengIOP PublishingApplied Physics Express1882-07862025-01-0118202700110.35848/1882-0786/adb3ebSelf-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surfaceHugo Villanti0Sébastien Plissard1https://orcid.org/0000-0002-0769-5429Jean-Baptiste Doucet2Alexandre Arnoult3https://orcid.org/0000-0001-8240-8269Benjamin Reig4Laurent Dupont5https://orcid.org/0000-0003-1355-7871Véronique Bardinal6https://orcid.org/0000-0001-9242-4457LAAS-CNRS, Université de Toulouse , CNRS, 7 Avenue du Colonel Roche, 31400 Toulouse, FranceLAAS-CNRS, Université de Toulouse , CNRS, 7 Avenue du Colonel Roche, 31400 Toulouse, FranceLAAS-CNRS, Université de Toulouse , CNRS, 7 Avenue du Colonel Roche, 31400 Toulouse, FranceLAAS-CNRS, Université de Toulouse , CNRS, 7 Avenue du Colonel Roche, 31400 Toulouse, FranceLAAS-CNRS, Université de Toulouse , CNRS, 7 Avenue du Colonel Roche, 31400 Toulouse, FranceOptics department , IMT Atlantique Technopôle Brest-Iroise CS 83818 29238 Brest cedex 03, FranceLAAS-CNRS, Université de Toulouse , CNRS, 7 Avenue du Colonel Roche, 31400 Toulouse, FranceThe development of tunable photonic devices is strategic for miniaturized optical instrumentation and sensing systems. Exploiting the birefringence variation of liquid crystals (LCs) instead of MEMS actuation in such devices could bring better spectral stability and lower power consumption. However, aligning LCs inside a III–V semiconductor device is tricky. We demonstrate that self-assembled gallium arsenide (GaAs) quantum dashes (QDHs) could serve as direct planar aligners for LC nematic molecules. The alignment quality and birefringence variation of a LC-microcell embedding QDHs are shown to be similar to those of a polymer nanograting-based reference, with the added advantage of better electrical performance.https://doi.org/10.35848/1882-0786/adb3ebIII–V semiconductorsliquid crystal alignmentanisotropyquantum dashesdroplet epitaxyliquid crystal microcell |
| spellingShingle | Hugo Villanti Sébastien Plissard Jean-Baptiste Doucet Alexandre Arnoult Benjamin Reig Laurent Dupont Véronique Bardinal Self-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surface Applied Physics Express III–V semiconductors liquid crystal alignment anisotropy quantum dashes droplet epitaxy liquid crystal microcell |
| title | Self-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surface |
| title_full | Self-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surface |
| title_fullStr | Self-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surface |
| title_full_unstemmed | Self-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surface |
| title_short | Self-assembled GaAs quantum dashes for direct alignment of liquid crystals on a III–V semiconductor surface |
| title_sort | self assembled gaas quantum dashes for direct alignment of liquid crystals on a iii v semiconductor surface |
| topic | III–V semiconductors liquid crystal alignment anisotropy quantum dashes droplet epitaxy liquid crystal microcell |
| url | https://doi.org/10.35848/1882-0786/adb3eb |
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