Scientific Results

Plasmon resonance of gold nanorods for all-optical drawing of liquid droplets

Year: 2013

Authors: de Angelis M., Matteini P., Ratto F., Pini R., Coppola S., Grilli S., Vespini V., Ferraro P.

Autors Affiliation: CNR – Istituto di Fisica Applicata Nello Carrara, via Madonna del Piano 10, 50019 Sesto Fiorentino (FI) Italy; CNR – Istituto Nazionale di Ottica sez. di Napoli, via Campi Flegrei 34 Comprensorio “A. Olivetti,” 80078 Pozzuoli (NA) Italy

Abstract: We present a laser-assisted system for dispensing liquid micro-droplets by near infrared illumination of a pyroelectric crystal functionalized with gold nanorods embedded into polyvinyl alcohol. The non-invasive near infrared source resonates with the plasmon oscillations of the gold nanorods, providing a controlled thermal stimulus able to generate the pyroelectric effect. The resulting electric field interacts electro-hydrodynamically with a liquid reservoir leading to precise drawing of micro-litre droplets. This laser-assisted electro-hydrodynamic technique may open the way to the development of more compact and non-invasive nano-dispensing devices. (C) 2013 AIP Publishing LLC.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 103 (16)      Pages from: 163112  to: 163112

More Information: This work has been partially supported by the Project of the Health Board of the Tuscany Region \”NANO-CHROM\”. The authors acknowledge the Italian Ministry of Research for financial support, under the \”Futuro in Ricerca 2010\” Programme (Protocol RBFR10FKZH) and the EFOR-CABIR CNR project. The authors wish to thank Andrea Finizio for helpful discussions.
DOI: 10.1063/1.4825337

Citations: 10
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