Raman amplification in the ultra-small limit of Ag nanoparticles on SiO2 and graphene: Size and inter-particle distance effects

• Published in: Materials & design Vol. 192; p. 108702
• Main Authors: Cortijo-Campos, Sandra, Ramírez-Jiménez, Rafael, Climent-Pascual, Esteban, Aguilar-Pujol, Montserrat, Jiménez-Villacorta, Félix, Martínez, Lidia, Jiménez-Riobóo, Rafael, Prieto, Carlos, de Andrés, Alicia
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2020; Elsevier
• Subjects: Localized surface plasmon resonances; Silver nanoparticle (arrays); Surface enhanced Raman scattering; Localized surface plasmon resonances; Silver nanoparticle (arrays); Surface enhanced Raman scattering

Size, shape and hot spots are crucial to optimize Raman amplification from metallic nanoparticle (NPs). The amplification from radius = 1.8 ± 0.4 nm ultra-small silver NPs was explored. Increasing NP density redshifts and widens their plasmon that, according to simulations for NPs arrays, is origina...