Ultrahighly Sensitive Surface-Enhanced Raman Spectroscopy Film of Silver Nanoparticles Dispersed in Three Dimensions on a Thin Alumina Nanowire Framework.

Myoung-Kyu Oh, Hyeonju Kim, Prince Gupta, Kyoungsik Kim

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In one paragraph

Article in Nanomaterials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 authors.

Myoung-Kyu OhAdvanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.ORCID 0000-0001-8478-4217

Hyeonju KimAdvanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.

Prince GuptaCarnot de Bourgogne Interdisciplinary Laboratory (Laboratoire Interdisciplinaire Carnot de Bourgogne), CNRS UMR 6303, University of Burgundy Franche-Comté (Université de Bourgogne Franche-Comté), 21000 Dijon, France.ORCID 0000-0002-7952-9120

Kyoungsik KimSchool of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea.

Funding

Gwangju Institute of Science and Technology Advanced Laser Monitoring Platform grant in 2023Korea government(DAPA(Defense Acquisition Program Administration), VTOL Technology Research Center for Defense Applications, 2023) 20-105-E00-005(KRIT-CT-23-010)National Research Foundation of Korea 2017R1D1A1B03036477

6 · The paper itself

Abstract

To develop highly sensitive surface-enhanced Raman spectroscopy (SERS) films, various types of aggregated Ag nanowire (NW) and nanoparticle (NP) complex structures were fabricated using anodic aluminum oxide (AAO) templates and thermal evaporation. Aggregated AgNW structures with numerous tapered nanogaps were fabricated via Ag deposition on aggregated thin alumina nanowires of different lengths. AgNP complex structures were obtained by collapsing vertically aligned thin alumina nanowires 1 μm in length and depositing AgNPs on their tops and sides using surface tension during ethanol drying after functionalization. The Raman signal enhancement factors (EFs) of the samples were evaluated by comparing the SERS signal of the thiophenol (TP) self-assembled monolayer (SAM) on the nanostructures with the Raman signal of neat TP. EFs as high as ~2.3 × 10

Indexed as

aggregated Ag nanowiresanodic aluminum oxidedispersed Ag nanoparticlesSERS substrate

Identifiers

PMID38133065

DOI10.3390/nano13243169

PMCPMC10745398

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