Discrimination of molecular thin films by surface-sensitive time-resolved optical spectroscopy

Claudio Giannetti, Francesco Banfi, Gabriele Ferrini, Simone Peli, Nicola Nembrini, Francesco Damin, Marcella Chiari

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

An optical discrimination technique, tailored to nanometric-sized, low optical absorbance molecular complexes adhering to thin metal films, is proposed and demonstrated. It is based on a time-resolved evanescent-wave detection scheme in conjunction with hierarchical cluster analysis and principal value decomposition. The present approach aims to differentiate among molecular films based on statistical methods, without using previous detailed knowledge of the physical mechanisms responsible for the detected signal. The technique is open to integration in lab-on-a-chip architectures and nanoscopy platforms for applications ranging from medical screening to material diagnostics.
Original languageEnglish
Pages (from-to)N/A-N/A
JournalApplied Physics Letters
Volume107
DOIs
Publication statusPublished - 2015

Keywords

  • molecular films
  • surface-sensitive ultrafast spectroscopy

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