Reference : Novel optofluidic concepts enabled by topological microfluidics
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
Novel optofluidic concepts enabled by topological microfluidics
Sengupta, Anupam mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS) >]
EPJ Web of Conferences
EDP Sciences
Les Ulis
[en] Topological microfluidics ; Liquid Crystals ; Topological Defects ; Optofluidics ; Light Modulation
[en] The coupling between flow and director orientation of liquid crystals (LCs) has been long utilized to devise wide-ranging applications spanning modern displays, medical and environmental solutions, and bio-inspired designs and applications. LC-based optofluidic platforms offer a non-invasive handle to modulate light and material fields, both locally and dynamically. The flow-driven reorientation of the LC molecules can tailor distinct optical and mechanical responses in microfluidic confinements, and harness the coupling therein. Yet the synergy between traditional optofluidics with isotropic fluids and LC microfluidics remains at its infancy. Here, we discuss emerging optofluidic concepts based on Topological Microfluidics, leveraging microfluidic control of topological defects and defect landscapes. With a specific focus on the role of surface anchoring and microfluidic geometry, we present recent and ongoing works that harness flow-controlled director and defect configurations to modulate optical fields. The flow-induced optical attributes, and the corresponding feedback, is enhanced in the vicinity of the topological defects which geenerate distinct isotropic opto-material properties within an anisotropic matrix. By harnessing the rich interplay of confining geometry, anchoring and micro-scale nematodynamics, topological microfluidics offers a promising platform to ideate the next generation of optofluidic and optomechnical concepts.
University of Luxembourg: Department of Physics and Materials Science
Fonds National de la Recherche - FnR
ATTRACT Investigator Grant (Grant no. A17/MS/11572821/MBRACE); FNR-CORE Grant (No. C19/MS/13719464/TOPOFLUME/Sengupta)
Researchers ; Professionals ; Students ; General public ; Others
FnR ; FNR13719464 > Anupam Sengupta > TOPOFLUME > Topological Fluid Mechanics: Decoding Emergent Dynamics In Anisotropic Fluids And Living Systems > 01/09/2020 > 31/08/2023 > 2019

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