Portable Sequentially Shifted Excitation Raman Spectroscopy to Examine Historic Powders Enclosed in Glass Vials
Year: 2022
Authors: Innocenti S.; Balbas D.Q.; Pezzati L.; Fontana R.; Striova J.
Autors Affiliation: CNR, Natl Inst Opt, Largo Enrico Fermi 6, I-50125 Florence, Italy.
Abstract: Raman spectroscopy (RS) is a powerful non-invasive tool for the characterization of materials. However, the fluorescence effect often hampers the detectability of the relatively weak vibrational Raman signal. Several approaches were exploited to overcome this limit. This work, in particular, evaluates the performance of an in situ portable sequentially shifted excitation (SSE(TM)) Raman spectrometer applied to the examination of artistic historical pigment powders enclosed in glass vials. The explored handheld spectrometer employs a dual, temperature-shifted, 785 nm and 852 nm laser excitation to optimize both spectral coverage and fluorescence subtraction. The study demonstrates the feasibility of the SSE RS approach for non-invasive identification of art materials, and its applicability in complex situations where the examined material cannot be removed from its container. Laboratory measurements using benchtop dispersive micro-Raman spectroscopy at 785 nm are reported for comparison.
Journal/Review: SENSORS
Volume: 22 (9) Pages from: 3560-1 to: 3560-17
KeyWords: Raman spectroscopy; sequentially shifted excitation; non-invasive investigation; portable instrumentation; heritage scienceDOI: 10.3390/s22093560ImpactFactor: 3.900Citations: 7data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-12-01References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here