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INIZIO_TESTO_DA_INDICIZZARE
UNITA' DI RICERCA
Research program
Evaluation of effects of laser Cleaning/Ablation tretment on materials of interest in cultural heritage
University Co-ordinator
Università degli Studi di GENOVA -
FISICA - GENOVA(GE)
Research Unit Leader
Emanuele Felice PIANO
Description
The Research Unit will contribute to the project by performing the following actions: - Selecting materials to be treated by Laser cleaning. The materials selected will be identified among those of high historical and cultural interest. The member of the research Unit who has expertise in History of Art will contribute to this part of the project. - Performing AFM/STM (Atomic Force Microscopy/Scanning Tunnel Microscopy)analysis of the samples. The samples will be examined by using an AFM/STM microscope "Explorer" Thermomicroscopes-Veeco, which operates in a controlled environment. The microscope will be included in a glove-box with a lateral pre-chamber which maintains the microscope in a controlled environment. The microscope can scan samples of macroscopic dimensions (scanning tip probe) and it is very appropriate for non-destructive analysis. Its high resolution (z nominal resolution 0.01 nm) will allow to register the morphological changes of the sample surface after the laser ablation procedure.- Performing XPS/Auger analysis of the samples. The samples will be investigated with XPS and Auger spectroscopy with the aim of identify the chemical species that are present on the surface before and after the laser treatment. The aim is to find the optimum set of parameters.- Performing Micrometric and millimetric investigation of mechanical properties using optical technique of Ellissometry, Speckle Interferometry (ESPI) and Digital Holography. This technique can allow a control of the mechanical and thermal stress in consequence of the treatments carried out on the samples.
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