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High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique

التفاصيل البيبلوغرافية
العنوان: High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique
المؤلفون: C. Awada, C. Dab, M. G. Grimaldi, A. Alshoaibi, F. Ruffino
المصدر: Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
بيانات النشر: Nature Portfolio, 2021.
سنة النشر: 2021
المجموعة: LCC:Medicine
LCC:Science
مصطلحات موضوعية: Medicine, Science
الوصف: Abstract We report high optical enhancement in Ag/Au alloys and porous gold nanostructures using Surface Enhanced Raman Spectroscopy (SERS) technique. Scanning electron microscopy investigation shows the formation of Ag/Au alloys particles during irradiation of Ag–Au bilayer deposited on FTO (SnO2:F) substrate by laser fluency equal to 0.5 J/cm2 or 1.0 J/cm2 with 12 ns laser pulse duration. The dealloying process of these Au–Ag alloy particles leads to the formation of Au nanoporous particles. The obtained nanostructures were studied with SERS and revealed a promising enhancement factor in porous Au nanostructure and tunability of localized surface plasmon resonance. The highly dense strong hot spots and large specific area in porous structure of gold nanostructures is the origin of the highly enhancement factor observed experimentally and theoretically. A very good agreement between simulation and experimental results was found confirming the potential of Au/Ag alloys and particularly porous gold nanostructure in SERS application.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2045-2322
Relation: https://doaj.org/toc/2045-2322
DOI: 10.1038/s41598-021-84093-0
URL الوصول: https://doaj.org/article/c871b4768527476c83c6db1828a62ca9
رقم الأكسشن: edsdoj.871b4768527476c83c6db1828a62ca9
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20452322
DOI:10.1038/s41598-021-84093-0