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18 September 2018 Light induced chiral structured materials (Conference Presentation)
Takashige Omatsu
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Proceedings Volume 10740, Molecular Machines; 1074008 (2018) https://doi.org/10.1117/12.2323650
Event: SPIE Organic Photonics + Electronics, 2018, San Diego, California, United States
Abstract
Optical vortex beams, possessing various unique physical properties, such as an annular intensity profile with a dark core, a helical wavefront, and an orbital angular momentum of ℓħ (where ħ is the reduced Planck constant) per photon, provide us many new fundamental light-matter interactions. In recent years, we and our collaborators have discovered that optical vortex beams can twist melted or softened materials to complete various chiral structured materials, including chiral metal needles, chiral monocrystalline silicon microstructures, and chiral organic surface reliefs on a nano-/micro-scale, by orbital angular momentum transfer effects. We call this ‘optical vortex materials processing’. This optical vortex materials processing should open potentially the door towards the development of chiral optical devices, for instance, chiral metasurfaces, sensitive detectors of the chiral chemical composites, and chiral chemical reactors at high time, cost and energy efficiencies. In this presentation, we review the state-of-art of the chiral nano-/micro-structures fabrictaed by optical vortex materials processing. We further address wavelength-versatile optical vortex sources for the optical vortex materials processing.
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Takashige Omatsu "Light induced chiral structured materials (Conference Presentation)", Proc. SPIE 10740, Molecular Machines, 1074008 (18 September 2018); https://doi.org/10.1117/12.2323650
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KEYWORDS
Optical vortices
Materials processing
Composites
Light-matter interactions
Metals
Natural surfaces
Optical components
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