Mo-POS-04 - Enhanced Optical NO₂ Sensing at Room Temperature through Chemical Reaction-Mediated Plasmonic Interaction

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Poster

Chapter

Photonics And Optical Sensors

Author(s)

M. Pereira Martins, A. T. Güntner - ETH Zurich,Zurich (Switzerland)

Pages

517 - 518

DOI

10.5162/eurosensors2026/Mo-POS-04

ISBN

978-3-910600-12-6

Price

free

Abstract

Recently, the interest in plasmonic nanoparticles for sensing applications has been growing due to their ability to colorimetrically quantify gas concentrations, even by naked eye. Specifically, localized surface plasmon resonance (LSPR) results in strong light absorption and enhanced sensing specifically through chemical reaction-mediated LSPR. Here, this is leveraged for the detection of relevant levels of NO 2 at room temperature with high selectivity over significant confounders using TiO 2 nanoparticles decorated with Au. Additionally, the interaction between the Au-TiO 2 nanoparticles and NO 2 has been investigated.