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18 June 2024 3D nanoprinted structured surfaces: a platform for anchoring and electro-optic switching of liquid crystals
Markus A. Schmidt, Malte Plidschun, Bingru Zhang, Heinz Kitzerow
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Proceedings Volume PC13016, Liquid Crystals Optics and Photonic Devices; PC130160M (2024) https://doi.org/10.1117/12.3017447
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
Surface alignment of liquid crystals (LCs) is key for optimizing their performance. Effective LC alignment strongly depends on the substrate used, which should promote strong local anchoring of the director field. Our work introduces a novel method using nanolithography to control the alignment of thermotropic LCs. Key to the approach is the use of 3D nanoprinting to create customized parallel nanogrooves on a glass substrate. These grooves yield azimuthal anchoring energies ranging from 10^-6 J/m² to 10^-5 J/m², partially surpassing values from other photopolymers. This approach offers high spatial resolution (~2µm) and allows for electro-optical switching, thus providing a flexible substrate platform for LC applications.
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Markus A. Schmidt, Malte Plidschun, Bingru Zhang, and Heinz Kitzerow "3D nanoprinted structured surfaces: a platform for anchoring and electro-optic switching of liquid crystals", Proc. SPIE PC13016, Liquid Crystals Optics and Photonic Devices, PC130160M (18 June 2024); https://doi.org/10.1117/12.3017447
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KEYWORDS
Liquid crystals
Electro optics
Switching
Glasses
Laser nanostructuring
Multiphoton lithography
Nanolithography
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