Opal-Type Photonic Crystals: Fabrication and Application
| Autor: | Brigitte Boulard, C. Duverger-Arfuso, Guillaume Alombert-Goget, Andrea Chiappini, Enrico Moser, Sriram Guddala, Giancarlo C. Righini, Ilaria Cacciari, Maurizio Ferrari, Massimo Brenci, Simone Berneschi, D. Narayana Rao, Cristina Armellini |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
gold NPs
Strain sensor Fabrication Materials science SERS business.industry technology industry and agriculture Golg nanoparticles Nanotechnology Photonic band gap Substrate (electronics) Colloidal crystal Crystal symbols.namesake Colloidal gold symbols Optoelectronics colloidal crystals Surface plasmon resonance business Raman spectroscopy Photonic crystal |
| Zdroj: | CIMTEC 2010, 12th International Ceramics Congress, International Conference Disclosing Materials at Nanoscale, Montecatini, 2010 info:cnr-pdr/source/autori:Andrea Chiappini, Guillaume Alombert-Goget, Cristina Armellini, Simone Berneschi, Brigitte Boulard, Massimo Brenci, Ilaria Cacciari, Claire Duverger-Arfuso, Sriram Guddala, Maurizio Ferrari, Enrico Moser, D. Narayana Rao, Giancarlo C. Righini/congresso_nome:CIMTEC 2010, 12th International Ceramics Congress, International Conference Disclosing Materials at Nanoscale/congresso_luogo:Montecatini/congresso_data:2010/anno:2010/pagina_da:/pagina_a:/intervallo_pagine CIMTEC 2010, 12th International Ceramics Congress, Montecatini, 2010 info:cnr-pdr/source/autori:Andrea Chiappini, Guillaume Alombert-Goget, Cristina Armellini, Simone Berneschi, Brigitte Boulard, Massimo Brenci, Ilaria Cacciari, Claire Duverger-Arfuso, Sriram Guddala, Maurizio Ferrari, Enrico Moser, D. Narayana Rao, Giancarlo C. Righini/congresso_nome:CIMTEC 2010, 12th International Ceramics Congress/congresso_luogo:Montecatini/congresso_data:2010/anno:2010/pagina_da:/pagina_a:/intervallo_pagine |
| ISSN: | 1662-0356 |
| DOI: | 10.4028/www.scientific.net/ast.71.50 |
| Popis: | We report on fabrication and characterization of two different opal-like structures: (i) crystal exhibiting mechanochromism, i.e. change of colour when subjected to mechanical stress, composed of closely packed colloidal polystyrene particles (CPCP) embedded in a poly-dimethylsiloxane (PDMS) elastomeric matrix; (ii) metallo-dielectric systems (MDCS), based on the realization of inverse silica opal and following attachment of gold nanoparticles on the silica network of the inverse colloidal structure. Optical measurements, performed on the two structures, have demonstrated that: (i) when an horizontal strain is applied on the CPCP embedded in PDMS, a blue shift of the diffraction peak occurs as a function of the applied strain and (ii) MDCS have unique optical properties that combine the localized surface plasmon resonance (LSPR) of gold nanoparticles (Au NPs) with the photonic band gap features of colloidal crystal structures. Finally, preliminary results on MDCS used as SERS substrate evidence a higher increase of the Raman signal in respect to that observed for others metallic structures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|