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

Simone Peli | Zendy; N. Nembrini | Zendy; Francesco Damin | Zendy; Marcella Chiari | Zendy; Claudio Giannetti | Zendy; Francesco Banfi | Zendy; Gabriele Ferrini | Zendy

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

Author(s) -

Simone Peli,

N. Nembrini,

Francesco Damin,

Marcella Chiari,

Claudio Giannetti,

Francesco Banfi,

Gabriele Ferrini

Publication year - 2015

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4934216

Subject(s) - thin film , absorbance , materials science , spectroscopy , optoelectronics , ranging , nanotechnology , optics , computer science , physics , telecommunications , quantum mechanics

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

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