Heat-Induced Fragmentation and Adhesive Behaviour of Gold Nanowires for Surface-Enhanced Raman Scattering Substrates

Autor: Annamarija Trausa, Ciro Federiko Tipaldi, Liga Ignatane, Boris Polyakov, Sven Oras, Edgars Butanovs, Edgars Vanags, Krisjanis Smits
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: ChemEngineering, Vol 8, Iss 1, p 15 (2024)
Druh dokumentu: article
ISSN: 2305-7084
DOI: 10.3390/chemengineering8010015
Popis: This study explores a novel approach to surface-enhanced Raman scattering (SERS) substrate fabrication through the heat-induced fragmentation of gold nanowires (Au NWs) and its impact on gold nanoparticle adhesion/static friction using atomic force microscopy manipulations. Controlled heating experiments and scanning electron microscopy measurements reveal significant structural transformations, with NWs transitioning into nanospheres or nanorods in a patterned fashion at elevated temperatures. These morphological changes lead to enhanced Raman signals, particularly demonstrated in the case of Rhodamine B molecules. The results underscore the critical role of NW shape modifications in augmenting the SERS effect, shedding light on a cost-effective and reliable method for producing SERS substrates.
Databáze: Directory of Open Access Journals
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