Conservation and Restoration


Roman cavalry sword "spatha"

 

Conservation & Restoration of Cultural Heritage

As a consortium member and key developer of the EU Horizon 2020 project SensMat (Grant Agreement No 814596), we developed and applied a portable Raman spectrometer for the non-destructive analysis of sensitive cultural heritage materials.

Materials Analyzed:

  • Inorganic pigments: Malachite, azurite, vermilion, lead white, ochres 
  • Metal corrosion products: Cuprite, tenorite, brochantite on archaeological artifacts
  • Organic materials: Drying oils, resins, protein-based binders 
  • Degradation markers: Sulfate, nitrate salts causing efflorescence  
     Substrates: Wood, stone, plaster, mural grounds

Case Studies:

  • Roman cavalry sword ("spatha")
    Identification of green corrosion products as malachite (Cu₂CO₃(OH)₂)
    Assessment of preservation state and conservation needs

  • 9th-century wall paintings, Corvey Abbey
    Analysis of pigment composition and degradation
    Support for restoration planning and documentation

Your Benefit:  
Preserve cultural heritage with scientific precision — using non-destructive, mobile Raman microspectroscopy and custom software solutions:

  • No sample damage — ideal for irreplaceable artifacts 

  • On-site capability — direct analysis in museums, churches, or excavation sites  

  • Full documentation — automated PDF reports with spectra, metadata, and interpretation  

  • Fast substance matching — via SQLite database with >200 reference spectra
     
  • Offline operation — secure use in restricted environments



Technology Transfer to Public Safety:  
The analytical methods developed for cultural heritage are directly transferable to forensic investigations, such as:

           -  Identification of ignitable liquids at fire scenes
           -  Analysis of organic residues on tools or packaging
           -  Support for criminal investigations through non-destructive, on-
              site analysis



You can find more information about the EU project here.

Here are some examples:

1.     Raman spectrum of a green copper mineral pigment :

2.     Raman measurements on wall paintings (9th century) in the          abbey of Corvey: