Optical Sorting of Nanorods via Chiral Dielectric Hyperbolic Metamaterials in Clustered Configurations

DOI

10.2991/978-94-6463-884-4_71How to use a DOI?

Keywords

Optical Sorting; Nanorod; plasmonic; Hyperbolic Metamaterial

Abstract

In pharmaceutical industries, the classification of plasmonic, dielectric, and chiral nanorods is traditionally achieved through sophisticated laboratory setups, chemical treatments, and multi-step processes. This study introduces an innovative and unique optical sorting technique for nanorods with significant optical force having ~10-20N ranges, enabling the classification of nanorods based on their distinct optical force responses. Pushing effects are generally experienced by objects interacting with light; however, pulling forces or lateral movements can also be exhibited, depending on the interaction. Notably, unique force-direction behaviors are generated for different nanorods simultaneously using a single experimental setup. The proposed optical sorting mechanism is demonstrated using Chiral Dielectric Hyperbolic Metamaterials (CDHMMs) as a substrate. A linearly polarized plane wave, incident at a 90-degree angle, is used to generate distinct responses from three types of nanorods: SiO₂ (dielectric), chiral nanorods, and Au (plasmonic). Lateral forces are displayed by dielectric and chiral nanorods along distinct axes, with the forces on dielectric nanorods being less pronounced. Plasmonic nanorods exhibit substantial optical pushing forces. These effects are caused by the interplay of material characteristics, such as refractive index, chirality, and plasmonic resonance, with the incident light. Through this approach, a sustainable and environmentally friendly alternative to conventional chemical-based sorting techniques is provided, reducing reliance on toxic substances and expensive processes.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Md. Al Amin Chy
AU  - Md. Ajijul Haque Sakib Opu
AU  - Md. Janibul Alam Soeb
PY  - 2025
DA  - 2025/11/18
TI  - Optical Sorting of Nanorods via Chiral Dielectric Hyperbolic Metamaterials in Clustered Configurations
BT  - Proceedings of the 8th International Conference on Engineering Research, Innovation, and Education 2025 (ICERIE 2025)
PB  - Atlantis Press
SP  - 590
EP  - 597
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-884-4_71
DO  - 10.2991/978-94-6463-884-4_71
ID  - Chy2025
ER  -