FDTD modeling of 2PP-fabricated SERS substrates: design, simulation, and hotspot analysis

Qing Liu; Tatevik Chalyan; Mehdi Feizpour; Heidi Ottevaere

doi:10.1117/12.3018812

10 June 2024 FDTD modeling of 2PP-fabricated SERS substrates: design, simulation, and hotspot analysis

Qing Liu, Tatevik Chalyan, Mehdi Feizpour, Heidi Ottevaere

Proceedings Volume 12991, Nanophotonics X; 1299113 (2024) https://doi.org/10.1117/12.3018812
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

This paper presents a comprehensive exploration of Surface-Enhanced Raman Spectroscopy (SERS) substrate design, leveraging Finite-Difference Time-Domain (FDTD) simulations for systematic parameter sweeping. Our investigation goes beyond enhancing SERS performance, addressing the crucial aspect of manufacturability with two-photon polymerization (2PP). By examining parameters such as height, pitch, and diameter, we aim to identify structures that not only exhibit high enhancement factors but also possess higher tolerances suitable for practical fabrication. Novel models are developed to visualize SERS hotspots based on nominal shape and AFM data, providing valuable insights for both substrate performance and manufacturability. This dual-focused strategy, integrating FDTD modeling with 2PP fabrication, offers an understanding for advancing SERS substrate design in both sensitivity and practicality.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qing Liu, Tatevik Chalyan, Mehdi Feizpour, and Heidi Ottevaere "FDTD modeling of 2PP-fabricated SERS substrates: design, simulation, and hotspot analysis", Proc. SPIE 12991, Nanophotonics X, 1299113 (10 June 2024); https://doi.org/10.1117/12.3018812

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