Facile and low-cost fabrication of SiO2-covered Au nanoislands for combined plasmonic enhanced fluorescence microscopy and SERS
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Title
Facile and low-cost fabrication of SiO2-covered Au nanoislands for combined plasmonic enhanced fluorescence microscopy and SERSAuthor (s)
Date
2023-10-08Publisher
MDPIISSN
2079-4991Bibliographic citation
Vidal, Alejandro, Sergio Molina-Prados, Ana Cros, Núria Garro, Manuel Pérez-Martínez, Raquel Álvaro, Gadea Mata, Diego Megías, and Pablo A. Postigo. (2023). "Facile and Low-Cost Fabrication of SiO2-Covered Au Nanoislands for Combined Plasmonic Enhanced Fluorescence Microscopy and SERS" Nanomaterials 13, no. 19: 2729.Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
An easy and low-cost way to fabricate monometallic Au nanoislands for plasmonic enhanced spectroscopy is presented. The method is based on direct thermal evaporation of Au on glass substrates to form nanoislands, with ... [+]
An easy and low-cost way to fabricate monometallic Au nanoislands for plasmonic enhanced spectroscopy is presented. The method is based on direct thermal evaporation of Au on glass substrates to form nanoislands, with thicknesses between 2 and 15 nm, which are subsequently covered by a thin layer of silicon dioxide. We have used HR-SEM and AFM to characterize the nanoislands, and their optical transmission reveals strong plasmon resonances in the visible. The plasmonic performance of the fabricated substrates has been tested in fluorescence and Raman scattering measurements of two probe materials. Enhancement factors up to 1.8 and 9×104 are reported for confocal fluorescence and Raman microscopies, respectively, which are comparable to others obtained by more elaborated fabrication procedures. [-]
Is part of
Nanomaterials Vol. 13, Issue 19 (2023)Funder Name
Ministerio de Ciencia, Innovación y Universidades | Comunidad de Madrid | MINECO | Ministerio de Ciencia e Innovación, Agencia Estatal de Investigación (AEI) | Generalitat Valenciana | European Union NextGenerationEU
Project code
RTI2018-100773-B-C32 | RTC2019-007093-8 | S2018/NMT-4291 TEC2SPACE | CSIC13-4E-1794 | PID2019-104272RB-C53/AEI/10.13039/501100011033, PID2019-110927RB-I00/AEI/10.13039/501100011033, PID2019-109641RB-I00 | PROMETEO/2020/029 | PRTR-C17.I1
Rights
info:eu-repo/semantics/openAccess
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