Plasmonics and super-hydrophobicity: A new class of nano-bio-devices

F. Gentile, M. L. Coluccio, A. Toma, A. Alabastri, R. Proietti Zaccaria, Gobind Das, F. De Angelis, P. Candeloro, Carlo Liberale, G. Perozziello, L. Tirinato, M. Leoncini, Enzo Di Fabrizio*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

2 Scopus citations

Abstract

Early detection of diseases has great importance in terms of success of the disease treatment. In fact, it has a profound positive influence on the response provided by the patient, leading to shorter and less invasive treatment regimes. We consider here the Raman detection of low (atto-molar) concentrates of molecules by applying nanofabrication techniques in the fabrication of plasmonic devices ful-filling the requirement of superhydrophobicity. Plasmonic resonances will have the effect of substantially increasing the local electric field around the fabricated nano-device which, in turn, will positively affect the Raman signal. Similarly, the superhy-drophobicity will play the crucial role in localizing the few molecules of the analyte around the plasmonic device, therefore allowing their detection in a manner other-wise impossible in diffusion-based devices. We will theoretically explain the concept of superhydrophobicity by providing also a roadmap for defining the optimal super-hydrophobic device, then we will introduce the fabrication process to realize such a device and, finally, we will provide the Raman counting of a series of analytes together with electromagnetic simulations illustrating the role of the electric field in the formation of the Raman signal.

Original languageEnglish (US)
Title of host publicationPlasmonics
Subtitle of host publicationTheory and Applications
PublisherSpringer Netherlands
Pages501-524
Number of pages24
ISBN (Electronic)9789400778054
ISBN (Print)9789400778047
DOIs
StatePublished - Jan 1 2013

Keywords

  • Hydrophobicity
  • Plasmon

ASJC Scopus subject areas

  • Chemistry(all)

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