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3 October 2024 Three-dimensional bio-photonic metamaterials
Gennady B. Shvets
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Proceedings Volume PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII; PC1311103 (2024) https://doi.org/10.1117/12.3028672
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
While numerous applications of plasmonic metamaterials to sensing and imaging the living matter are well-established, the effects of such photonic structures on the living matter itself are less explored. I will describe the concept of a designer bio-photonic metamaterial that can be used to (a) elicit specific responses from the living cells cultured atop of it, and (b) transduce such responses to optical signals. I will concentrate on several types of three-dimensional mixed-materials metasurfaces comprising plasmonic nano-antennas fabricated atop of tall high aspect ratio dielectric pillars. Cellular dynamics in aqueous environment is probed by illuminating the structures from below through an infrared-transparent substrate and collecting the reflected spectrum. By appropriately choosing the geometry of such elevated nano-antennas, we can induce the cells to wrap around them, thus enhancing the resulting reflected mid-infrared signal. We demonstrate that by increasing the height of the dielectric pillars, the penetration depth of the mid-infrared signal into the cell is also increased.
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Gennady B. Shvets "Three-dimensional bio-photonic metamaterials", Proc. SPIE PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII, PC1311103 (3 October 2024); https://doi.org/10.1117/12.3028672
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KEYWORDS
Photonic metamaterials
Biomedical optics
Dielectrics
Mid infrared
Plasmonics
Reflection
Infrared radiation
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