Im Rahmen der Ringvorlesung im Sommersemester 2025 präsentieren wir verschiedene aktuelle Forschungsprojekte. Die Vorträge finden Hybrid oder Online statt und richten sich an Studierende, Fachkolleg*innen und all jene, die sich für die Restaurierung und Konservierung von Kulturgütern interessieren.

Understanding porous paint layers, although fundamental in their conservation, remains a challenge. Ptychography X-ray computed tomography (PXCT) combines two-dimensional ptychography with computed tomography methods.  It allows for the three-dimensional investigation of samples non-destructively at the nano scale and is among the X-ray techniques with the highest resolving power. In this study of a porous, fragile ultramarine paint layer from the painting “Beach landscape with trees and boats” (Woll 637, MUNCH, Oslo) completed in 1905-06 by Edvard Munch, 30 µm wide pillars were prepared using focused ion beam. PXCT coupled with advanced sample preparation enabled the visualization of the proteinaceous binder network of nanobridges within the paint layer at a resolution of 32 nm. Data processing including material segmentation and quantification was carried out for the study of porosity and binder-pigment interfaces.

ReferentIn: Ester S. B. Ferreira, Charlotte N. Stahmann, Dominik Müller, Mirko Holler, Nicholas W. Phillips, Martin Muckelbauer, Eva Storevik-Tveit

Weitere Informationen findet ihr im Anhang.