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Proceedings Paper

Superhydrophobicity, plasmonics and Raman spectroscopy for few/single molecule detection down to attomolar concentration
Author(s): G. Das; F. Gentile; F. De Angelis; M. L. Coluccio; C. Liberale; R. Proietti Zaccaria; Enzo Di Fabrizio
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Paper Abstract

Few/single molecule detection is of great importance in fields including biomedicine, safety and eco-pollution in relation to rare and dangerous chemicals. Superhydrophobic surfaces incorporated with the nanoplasmonic structure enable this device to overcome the diffusion limit of molecules dissolved in water with the concentration down to 10 attomolar. In this paper demonstrated the fabrication of hydrophobic surfaces using optical lithography/reactive ion etching and its application to overcome the diffusion limit. Various experiments such as contact angle measurements, SEM, fluorescence, Raman and FTIR absorption spectroscopy were performed which indicate that utilizing this device it could be possible to perform the measurements for the sample with extremely low dilution. The major application of this novel family of devices would be the early detection of tumors or other important pathologies, with incredible advances in medicine.

Paper Details

Date Published: 9 October 2012
PDF: 9 pages
Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84570C (9 October 2012); doi: 10.1117/12.936517
Show Author Affiliations
G. Das, Istituto Italiano di Tecnologia (Italy)
F. Gentile, Univ. degli studi Magna Græcia di Catanzaro (Italy)
F. De Angelis, Istituto Italiano di Tecnologia (Italy)
M. L. Coluccio, Univ. degli studi Magna Græcia di Catanzaro (Italy)
C. Liberale, Istituto Italiano di Tecnologia (Italy)
R. Proietti Zaccaria, Istituto Italiano di Tecnologia (Italy)
Enzo Di Fabrizio, Istituto Italiano di Tecnologia (Italy)
Univ. degli studi Magna Græcia di Catanzaro (Italy)

Published in SPIE Proceedings Vol. 8457:
Plasmonics: Metallic Nanostructures and Their Optical Properties X
Mark I. Stockman, Editor(s)

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