INO
CNR
vai_a_storia   vai_a_organizzazione   vai_a_sedi   vai_a_personale   Area Riservata
    English English Version  
 
 

All-dielectric core/shell resonators: From plasmon-free SERS to multimodal analysis

  Articoli su Riviste JCR/ISI  (anno 2018)

Autori:  Bontempi N., Vassalini I., Alessandri I

Affiliazione Autori:  INSTM and Chemistry for Technologies Laboratory, Mechanical and Industrial Engineering Department, University of Brescia, via Branze 38, Brescia, 2513, Italy

Riassunto:  All-dielectric materials are emerging as a new class of substrates for enhanced Raman scattering. As ohmic losses are reduced in the absence of plasmonic metals, Raman data obtained with dielectrics are very reproducible and reliable. This mini-review summarizes our recent work in the field of core/shell dielectric resonators designed for Raman purposes, with a special focus on SiO2/TiO2 (T-rex) core/shell beads. These systems are able to exploit the evanescent field generated by total internal reflection and multiple scattering of light at the sphere-to-sphere interface to multiply the number of Raman photons, improving the sensitivity of Raman detection and extending the application of surface enhanced Raman scattering for investigating surface chemical reactions. Examples of the application of T-Rex beads in detecting and monitoring environmental pollutants, greenhouse gases, biochemical species, and biochemical reactions are presented. The use of core/shell resonators for multimodal analysis based on the combination of surface enhanced Raman scattering with either mass spectrometry or refractive index optical sensing is also discussed, suggesting different possible future developments.

Rivista/Giornale:  JOURNAL OF RAMAN SPECTROSCOPY
Volume n.:  49 (6)      Pagine da: 943  a: 953
Ulteriori informazioni:  Regione Lombardia. - This work was carried out in the framework of the project: “Microsfere adattative per il monitoraggio e l\'abbattimento di inquinanti persistenti-MI ADATTI E L\'ABBATTI” supported by INSTM and Regione Lombardia. We thank Dr. L. Carletti and Prof. C. De Angelis (University of Brescia) for fruitful discussions and numerical simulations of the optical properties of the core/shell resonators described in this work.
DOI: 10.1002/jrs.5330

   *Citazioni: 6
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  21/07/2019

Riferimenti visionabili in IsiWeb of Knowledge: (solo per sottoscrittori)
Per visualizzare la scheda dell'articolo su IsiWeb: Clicca qui
Per visualizzare la scheda delle Citazioni dell'articolo su IsiWeb: Clicca qui

INO © Istituto Nazionale di Ottica - Largo Fermi 6, 50125 Firenze | Tel. 05523081 Fax 0552337755 - P.IVA 02118311006     P.E.C.    Info