Nanocomposite mesoporous ordered films for lab-on-chip intrinsic surface enhanced Raman scattering detection

Luca Malfatti, Paolo Falcaro, Benedetta Marmiroli, Heinz Amenitsch, Massimo Piccinini, Andrea Falqui, Plinio Innocenzi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Mesoporous nanocomposite materials have been fabricated through integration of evaporation-induced self-assembly and deep X-ray lithography. Micropatterned films made using a mesoporous ordered silica matrix which contains silver nanoparticles have been obtained. The exposure of the mesoporous films to high energy X-rays, which are generated by a synchrotron source, produces several effects: the removal of the surfactant, the densification of the silica backbone and the formation of silver nanoparticles. This integrated process produces a nanocomposite material which has a 2D-hexagonal organized porosity and silver nanoparticles with a sharp size distribution around 5 nm. The patterned nanostructured films have been tested as a lab-on-chip device for intrinsic surface enhanced Raman scattering detection using a solution containing rhodamine 6G in ethanol and measuring Raman response as a function of laser power.

Original languageEnglish (US)
Pages (from-to)3760-3766
Number of pages7
JournalNanoscale
Volume3
Issue number9
DOIs
StatePublished - Sep 1 2011

ASJC Scopus subject areas

  • Materials Science(all)

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