Address book
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RAFFAELLA SIGNORINI
Position
Professoressa Associata
Structure
Address
VIA F. MARZOLO, 1 - PADOVA
Telephone
0498275118
Since October 2015 Associate Professor in Physical Chemistry at the Department of Chemical Sciences of the University of Padova.
The research activity spans the following fields:
(i) Characterization of the optical properties of chromophores characterized by reverse saturable absorption (RSA) and two photon absorption (TPA), and development of an optical limiting device capable to protect from pulsed and CW laser radiation in a wide frequency band;
(ii) Investigation of the Up-converted stimulated emission of chromophores in suitable laser cavities and development of an integrated laser device;
(iii) Characterization of the two photon induced fluorescence of organic multipolar chromophores;
(iv) Investigation of hybrid sol-gel materials properties, displaying photocatalitic activity;
(v) Micro and sub-micro fabrication via two photon induced polymerization of polymeric and sol-gel materials. (vi) Realization and characterization of plasmonic nanostructures for sensing applications.
(vii) Optical characterization of semiconductor and metal materials for electrics / electronic applications.
The research activity is done at different levels. It initially envisages the theoretical study of the optical properties of the chromophores. RSA and TPA processes and materials have been theoretically investigated to find the more performing system for the realization of an optical limiting device working in the pulsed regime. Cavity laser, like DFB grating, has also been modelled to identify the best optical parameters for the realization of integrated laser devices.
In parallel the experimental characterization of linear and nonlinear optical properties has been carried out. The optical characterization is performed through the use of UV-Vis and IR absorption and fluorescence emission techniques. The nonlinear characterization is done using laser instrumentations with continuous and fast (ns) and ultra-fast (fs) pulsed emission. The used techniques are different: Raman, nonlinear transmittance (NT), Z-scan in open and closed aperture configuration, two-photon absorption (TPA) and two-photon induced fluorescence (TPIF), stimulated emission (ASE) in waveguiding and cavity (lasing) configurations, and gain in waveguides. Some of these techniques have only been improved (Raman); others have been fully implemented and developed during the research activity (NT, Z-scan, ASE, lasing, gain, TPA and TPIF).
Author of almost sixty papers on international journals, like ACS Nano (1), Chemistry of Materials (1), Advanced Materials (4), Advanced Functional Materials (2), Journal of American Chemical Society (1), Biosensors & Bioelectronics (1), Chemical Communications (1), Journal of Physical Chemistry C (3), Carbon (1), Organic Letters (1), Physical Chemistry Chemical Physics (3), 27 proceedings, three book chapter, and two patents. The medium impact factor of the last 10 years is 4.34
Most of the published articles comprises a large number of authors and reflects the multidisciplinary nature of the topics covered. The authors are experts in the scientific areas involved; they are essential for achieving the high quality results reported.
She has also participated to many national and international conferences in the field of photonics and non-linear optics, with invited oral talks (7), oral contributions (3) and posters.
Notices
Office hours
at Studio del Docente
Appuntamenti disponibili ogni giorno su richiesta attraverso e-mail raffaella.signorini@unipd.it
Teachings
- ADVANCED LABORATORY FOR THE PREPARATION AND CHARACTERIZATION OF MATERIALS, AA 2023 (SCQ3102180)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2022 (SCO2045509)
- NANOBIOTECHNOLOGY, AA 2022 (MEO2045678)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2021 (SCO2045509)
- NANOBIOTECHNOLOGY, AA 2021 (MEO2045678)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2020 (SCO2045509)
- NANOBIOTECHNOLOGY, AA 2020 (MEO2045678)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2019 (SCO2045509)
- NANOBIOTECHNOLOGY, AA 2019 (MEO2045678)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2018 (SCO2045509)
- NANOBIOTECHNOLOGY, AA 2018 (MEO2045678)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2017 (SCO2045509)
- NANOBIOTECHNOLOGY, AA 2017 (MEO2045678)
- NANOBIOTECHNOLOGY, AA 2016 (MEO2045678)
- NANOBIOTECHNOLOGY, AA 2015 (MEO2045678)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2013 (SCO2045509)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2012 (SCO2045509)
- LABORATORY OF PREPARATION AND CHARACTERIZATION OF MATERIALS 2, AA 2011 (SC03111887)
Research Area
The research activity spans the following fields:
(i) Characterization of the optical properties of chromophores characterized by reverse saturable absorption (RSA) and two photon absorption (TPA), and development of an optical limiting device capable to protect from pulsed and CW laser radiation in a wide frequency band;
(ii) Investigation of the Up-converted stimulated emission of chromophores in suitable laser cavities and development of an integrated laser device;
(iii) Characterization of the two photon induced fluorescence of organic multipolar chromophores;
(iv) Investigation of hybrid sol-gel materials properties, displaying photocatalitic activity;
(v) Micro and sub-micro fabrication via two photon induced polymerization of polymeric and sol-gel materials. (vi) Realization and characterization of plasmonic nanostructures for sensing applications.
(vii) Optical characterization of semiconductor and metal materials for electrics / electronic applications.