New technology allows for the identification of ancient organic dyes from tiny samples
In short: Researchers have developed a method using surface-enhanced Raman scattering (SERS) to identify organic dyes in historical artifacts. While traditional methods often require large samples of fabric or paint, this technique can analyze microscopic fragments as small as 25 micrometers in diameter. The study successfully documented various historical pigments, including madder, cochineal, and lac dyes used in European art and ancient Egyptian artifacts.
Identifying organic dyes is difficult because they lack distinct elemental signatures and often produce interfering signals in standard tests. SERS overcomes this by using metallic substrates to amplify the dye's signal while suppressing background light. A limitation of this approach is that it requires specific metallic substrates and the development of specialized spectral databases for different materials.
Why it matters: This technology allows historians to analyze tiny fragments of ancient art to uncover the chemical secrets of historical dyes.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: Research: Casadio et al. (2010). Identification of Organic Colorants in Fibers, Paints, and Glazes by Surface Enhanced Raman Spectroscopy. Accounts of Chemical Research.
To cite this card, link to https://intellectplus.co.uk/app/history-research-new-technology-allows-for-the-identification-of-ancient-orga.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
Related
More in Archaeology · More in History · Latest · A–Z · All topics
