Portable XRD/XRF for Cultural Heritage
Duetto-2 is a portable instrument for non-invasive in- situ X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis. Its predecessor Duetto-1, launched in 2010, was the first commercial XRD/XRF instrument designed specifically for Cultural Heritage. Based on the same general principles, Duetto-2 benefits from a decade of improvement in system and component design.
Duetto-2 can be used in the laboratory or deployed in the field (museum, archaeological site, restoration project, etc) using a variety of mounting options.
The Duetto-2 technology traces its lineage to the XRD/XRF instrument deployed on Mars in the NASA Curiosity rover. It brings unprecedented miniaturization and ruggedness to Cultural Heritage Research.
XRD and XRF data are extracted from a series of CCD exposures. During an analysis the CCD X-ray detector is read every few seconds. Raw CCD data are processed in real time and XRD/XRF plots are visualized on the computer. The Duetto-2 application provides tools for preliminary analysis of the data during the acquisition.
XRF data, obtained from the exact same spot of the object as XRD, are very informative and practical in helping with the phase identification of complex samples, or confirming the nature of the phases found independently by XRD.
Duetto XRD data can be analyzed with any powder XRD analysis package. If the user doesn’t already own such an application, we recommend our cloud-based application QAnalyze.com and we can offer optional 3rd party applications bundled in the system.
New software offers advanced controls and data processing with an intuitive, dynamic and user-friendly graphic interface.
2D XRD pattern and diffractogram with phase identification revealing the presence of barite in the paint.
XRF spectra of cadmium orange paint (blue) compared to pure cadmium orange pigment (red). The Ba signature in the XRF confirms the interpretation of barite in the XRD pattern..
Pigments can be usually identified in minutes.
This stage developed specifically for Duetto offers precise X,Y and Z adjustments to position the instrument exactly on the area of interest. Two tilts allow maintaining the instrument normal to the surface analyzed. Motorized versions of the stage can be offered.
This versatile mount combines a sturdy photographic tripod and a custom extension arm with a tilt head and additional stabilizing legs. It is used in conjunction with the micro-positioning stage.
This benchtop mount offers the ultimate stability for use of Duetto in the laboratory, in conjunction with the micro-positioning stage. It is most useful for small objects and paintings or manuscripts that can be laid flat under the instrument.
Examples of Aplications
Examples of Duetto-1 deployed on the field or a laboratory.