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

Malfatti, Luca and Falcaro, Paolo and Marmiroli, Benedetta and Amenitsch, Heinz and Piccinini, Massimo and Falqui, Andrea and Innocenzi, Plinio (2011) Nanocomposite mesoporous ordered films for lab-on-chip intrinsic surface enhanced Raman scattering detection. Nanoscale, Vol. 3 (9), p. 3760-3766. eISSN 2040-3372. Article.

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DOI: 10.1039/C1NR10404G

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.

Item Type:Article
ID Code:6649
Status:Published
Refereed:Yes
Uncontrolled Keywords:Mesoporous nanocomposite materials, X-ray lithography, Raman response
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01 Dipartimenti > Architettura e pianificazione
Publisher:Royal Society of Chemistry
eISSN:2040-3372
Deposited On:23 Nov 2011 09:23

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