AI Article Synopsis
- Identifying the handedness of chiral materials is a challenging task in biochemistry, but nanophotonic structures can enhance weak chiroptical responses to aid this detection.
- This study looks into how silicon nanoparticles interact with a dielectric waveguide to sense the handedness of chiral substances by inducing polarization rotation in the wavefields.
- The research provides theoretical and numerical evidence for different configurations that enable detecting left- or right-handed particles based on noticeable transmission differences.
Article Abstract
Identifying the handedness of chiral materials in small quantities remains a significant challenge in biochemistry. Nanophotonic structures offer a promising solution by enhancing weak chiroptical responses through increased optical chirality. Utilizing a silicon-based approach for chiral sensing on a photonic integrated platform is highly desirable. In this study, we explore the interaction between a dielectric waveguide and silicon nanoparticles for detecting the handedness of chiral analytes. A chiral core induces polarization rotation of wavefields traveling along a dielectric waveguide with a square cross-section. This polarization rotation affects waveguide coupling differently depending on the left- or right-handed arrangement of nanoparticles around the waveguide, enabling enantiomer detection through discernible transmission differences. From a basic design to more practical structures, we investigate configurations that maintain the same working principles. Theoretical results based on the transfer matrix method corroborate the numerical simulations.
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| http://dx.doi.org/10.1364/OE.538940 | DOI Listing |
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