Articles producció científica> Química Física i Inorgànica

Robust raspberry-like metallo-dielectric nanoclusters of critical sizes as SERS substrates

  • Identification data

    Identifier: imarina:9297956
    Authors:
    Le Beulze, A.Gomez-Grana, S.Gehan, H.Mornet, S.Ravaine, S.Correa-Duarte, M.Guerrini, L.Alvarez-Puebla, R. A.Duguet, E.Pertreux, E.Crut, A.Maioli, P.Vallee, F.Del Fatti, N.Ersen, O.Treguer-Delapierre, M.
    Abstract:
    Raspberry-like nano-objects made of large plasmonic satellites (>10 nm) covering a central dielectric particle have many potential applications as photonic materials, superlenses and (bio-) sensors, but their synthesis remains challenging. Herein, we show how to build stable and robust raspberry-like nano-systems with close-packed satellites, by combining monodisperse silica particles (80 or 100 nm diameter) and oppositely charged noble metal nanoparticles (Au or Ag) with well-defined sizes (10-50 nm). The spectral characteristics of their associated plasmonic resonances (wavelength, linewidth, extinction cross-section) and the electromagnetic coupling between satellites were observed using the spatial modulation spectroscopy technique and interpreted through a numerical model. The composite nano-objects exhibit numerous hot spots at satellite junctions, resulting in excellent surface-enhanced Raman scattering (SERS) performance. The SERS efficiency of the raspberry-like clusters is highly dependent on their structure.
  • Others:

    Author, as appears in the article.: Le Beulze, A.; Gomez-Grana, S.; Gehan, H.; Mornet, S.; Ravaine, S.; Correa-Duarte, M.; Guerrini, L.; Alvarez-Puebla, R. A.; Duguet, E.; Pertreux, E.; Crut, A.; Maioli, P.; Vallee, F.; Del Fatti, N.; Ersen, O.; Treguer-Delapierre, M.;
    Department: Química Física i Inorgànica
    URV's Author/s: Alvarez Puebla, Ramon Angel / Guerrini, Luca
    Keywords: Surface Silver Nanoparticles Nano Microspheres Gold Enhanced raman-scattering Clusters
    Abstract: Raspberry-like nano-objects made of large plasmonic satellites (>10 nm) covering a central dielectric particle have many potential applications as photonic materials, superlenses and (bio-) sensors, but their synthesis remains challenging. Herein, we show how to build stable and robust raspberry-like nano-systems with close-packed satellites, by combining monodisperse silica particles (80 or 100 nm diameter) and oppositely charged noble metal nanoparticles (Au or Ag) with well-defined sizes (10-50 nm). The spectral characteristics of their associated plasmonic resonances (wavelength, linewidth, extinction cross-section) and the electromagnetic coupling between satellites were observed using the spatial modulation spectroscopy technique and interpreted through a numerical model. The composite nano-objects exhibit numerous hot spots at satellite junctions, resulting in excellent surface-enhanced Raman scattering (SERS) performance. The SERS efficiency of the raspberry-like clusters is highly dependent on their structure.
    Thematic Areas: Química Physics, applied Odontología Nanoscience and nanotechnology Nanoscience & nanotechnology Medicina ii Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materiais Matemática / probabilidade e estatística Interdisciplinar General materials science Farmacia Engenharias iv Engenharias iii Engenharias ii Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Chemistry, multidisciplinary Biotecnología Biodiversidade Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: ramon.alvarez@urv.cat luca.guerrini@urv.cat
    Author identifier: 0000-0003-4770-5756 0000-0002-2925-1562
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/submittedVersion
    Link to the original source: https://pubs.rsc.org/en/content/articlelanding/2017/nr/c7nr00969k
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Nanoscale. 9 (17): 5725-5736
    APA: Le Beulze, A.; Gomez-Grana, S.; Gehan, H.; Mornet, S.; Ravaine, S.; Correa-Duarte, M.; Guerrini, L.; Alvarez-Puebla, R. A.; Duguet, E.; Pertreux, E.; (2017). Robust raspberry-like metallo-dielectric nanoclusters of critical sizes as SERS substrates. Nanoscale, 9(17), 5725-5736. DOI: 10.1039/C7NR00969K
    Article's DOI: 10.1039/C7NR00969K
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2017
    Publication Type: Journal Publications
  • Keywords:

    Chemistry, Multidisciplinary,Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Nanoscience & Nanotechnology,Nanoscience and Nanotechnology,Physics, Applied
    Surface
    Silver
    Nanoparticles
    Nano
    Microspheres
    Gold
    Enhanced raman-scattering
    Clusters
    Química
    Physics, applied
    Odontología
    Nanoscience and nanotechnology
    Nanoscience & nanotechnology
    Medicina ii
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    General materials science
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Economia
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Chemistry, multidisciplinary
    Biotecnología
    Biodiversidade
    Astronomia / física
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