Art

Terahertz technology offers a powerful, non-invasive way to explore and preserve works of art and cultural heritage objects. Positioned between infrared and microwaves, terahertz waves can penetrate many non-metallic and non-polar materials such as paint layers, varnishes, paper, wood, ceramics, plaster, and composite structures, without requiring physical contact or sampling.

For art analysis, terahertz imaging can reveal hidden features beneath the visible surface of paintings and historical objects. It can help identify underdrawings, concealed layers, previous restorations, cracks, detachments, delaminations, and structural defects. Unlike conventional optical imaging, terahertz methods provide access to depth information, making it possible to study the internal stratigraphy of multilayer artworks.

In cultural heritage conservation, terahertz techniques are particularly valuable because they are safe for fragile and unique objects. They can support restorers, conservators, museums, and researchers by providing complementary information to X-ray, infrared, ultraviolet, and optical methods. Terahertz analysis can contribute to condition assessment, authentication studies, restoration planning, and long-term monitoring of artworks and heritage materials.

Our research focuses on developing advanced terahertz imaging and spectroscopy methods for the study of paintings, historical materials, and complex multilayer structures. By combining scientific instrumentation with conservation expertise, we aim to reveal the hidden history of artworks while preserving their integrity for future generations.

Key applications include:

  • Non-invasive imaging of paintings and heritage objects
  • Detection of hidden layers, underdrawings, and previous restorations
  • Analysis of cracks, voids, detachments, and delaminations
  • Study of multilayer structures such as paint, varnish, plaster, and wood
  • Support for conservation, restoration, and authentication
  • Complementary analysis alongside X-ray, infrared, UV, and optical imaging

Terahertz technology opens a new window into cultural heritage: it allows us to see beneath the surface, understand how artworks were made, and support their preservation without damaging them.