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@article{1714979,
author = {Petruš, Ondrej and Macko, Ján and Oriňaková, Renáta and Oriňak, Andrej and Múdra, Erika and Kupková, Miriam and Farka, Zdeněk and Pastucha, Matěj and Vladimír, Socha},
article_location = {Oxford},
article_number = {March 2021},
doi = {http://dx.doi.org/10.1016/j.saa.2020.119322},
keywords = {Colloidal litography; SERS; FDTD; PCA analysis},
language = {eng},
issn = {1386-1425},
journal = {Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy},
title = {Detection of organic dyes by surface-enhanced Raman spectroscopy using plasmonic NiAg nanocavity films},
url = {https://www.sciencedirect.com/science/article/pii/S1386142520313019},
volume = {249},
year = {2021}
}
TY - JOUR
ID - 1714979
AU - Petruš, Ondrej - Macko, Ján - Oriňaková, Renáta - Oriňak, Andrej - Múdra, Erika - Kupková, Miriam - Farka, Zdeněk - Pastucha, Matěj - Vladimír, Socha
PY - 2021
TI - Detection of organic dyes by surface-enhanced Raman spectroscopy using plasmonic NiAg nanocavity films
JF - Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
VL - 249
IS - March 2021
SP - "119322"
EP - "119322"
PB - Elsevier
SN - 13861425
KW - Colloidal litography
KW - SERS
KW - FDTD
KW - PCA analysis
UR - https://www.sciencedirect.com/science/article/pii/S1386142520313019
L2 - https://www.sciencedirect.com/science/article/pii/S1386142520313019
N2 - This work presents the NiAg nanocavity film for the detection of organic dyes by surface-enhanced Raman spectroscopy (SERS). Nanocavity films were prepared by colloidal lithography using 518-nm polystyrene spheres combined with the electrochemical deposition of Ni supporting layer and Ag nanoparticles homogeneous SERS-active layer. The theoretical study was modelled by finite-difference time-domain (FDTD) simulation of electromagnetic field enhancement near the nanostructured surface and experimentally proven by SERS measurement of selected organic dyes (rhodamine 6G, crystal violet, methylene blue, and malachite green oxalate) in micromolar concentration. Furthermore, the concentration dependence was investigated to prove the suitability of NiAg nanocavity films to detect ultra-low concentrations of samples. The detection limit was 1.3 × 10^-12, 1.5 × 10^-10, 1.4 × 10^-10, 7.5 × 10^-11 mol·dm-3, and the standard deviation was 20.1%, 13.8%, 16.7%, and 19.3% for R6G, CV, MB, and MGO, respectively. The analytical enhancement factor was 3.4 × 10^5 using R6G as a probe molecule. The principal component analysis (PCA) was performed to extract the differences in complex spectra of the dyes where the first and second PCs carry 42.43% and 31.39% of the sample variation, respectively. The achieved results demonstrated the suitability of AgNi nanocavity films for the SERS-based detection of organic dyes, with a potential in other sensing applications.
ER -
PETRUŠ, Ondrej, Ján MACKO, Renáta ORIŇAKOVÁ, Andrej ORIŇAK, Erika MÚDRA, Miriam KUPKOVÁ, Zdeněk FARKA, Matěj PASTUCHA and Socha VLADIMÍR. Detection of organic dyes by surface-enhanced Raman spectroscopy using plasmonic NiAg nanocavity films. \textit{Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy}. Oxford: Elsevier, 2021, vol.~249, March 2021, p.~''119322'', 12 pp. ISSN~1386-1425. Available from: https://dx.doi.org/10.1016/j.saa.2020.119322.
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