I am a researcher in art technology, specialising in artists' paint, the materials of medieval painters and illuminators, and especially in artists' recipe books.

I am an interdisciplinary researcher into historic artists' materials, especially paint, and in particular mediaeval paint. With a background in conservation and conservation science, I specialise in works of art as physical objects, or 'technical art history'. A particular interest is the materials and techniques of mediaeval European and Islamic manuscripts.

Working with the International Council of Museums (Conservation Committee) I co-founded the international working group on Art Technological Source Research, studying historical technical texts. I am currently an Invited Associate Professor in Technical Art History at Universidade Nova de Lisboa.