A functionalization-free plasmonic hole-sphere nanogap SERS platform for reliable on-site analysis and oxide-state classification

Nanoscale 2026

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Authors: Minjun Kim, Damun HEO, Sung Yoon Cho, Ye-Won Lee, Sun-Hwa Gu, Samir Adhikari, Dong-Han Lee, Seok Soon Jeong, Hyuck Soo Kim, Vasanthan Devaraj, Thomas Zentgraf, Min Yong Jeon
+1 more Jong‐Min Lee
DOI: 10.1039/d5nr03414k
Cited by: 0
References: 49

Abstract

, which were difficult to distinguish with conventional gold nanoparticles due to low signal intensity, at the on-site analysis level. Remarkably, reliable oxidation state identification remains possible even under reduced spectral resolution, ensuring compatibility with simplified detection setups such as bandpass filters or smartphone-based spectrometers. This HSNG-based SERS platform provides a scalable, accessible, and field-applicable approach to chemical sensing, readily extendable to the detection of diverse environmental contaminants.

Fields of Study & Subjects

Gold and Silver Nanoparticles Synthesis and Applications Plasmonic and Surface Plasmon Research Spectroscopy Techniques in Biomedical and Chemical Research

Publication details

Journal / source
Nanoscale
Volume
18
Issue
8
Pages
4292–4299
Publication date
1 January 2026
Language
EN