When I reviewed it I realized that, although parts of the paper had been included in several other papers by Ray, as well as in his book, A Chemist's Perspective on the Shroud of Turin, nothing else Rogers wrote included all his observations and thoughts about image color in one dedicated article.
So, with Joan Rogers' participation, we proof read and reformatted the paper and replaced the images with higher quality versions, and are making it available here on
Attention has been focalized to the pollen grains, to discuss M.
Freis results, without forgetting a more general investigation aimed at evidencing new information for the Shroud studies.
A few cotton fiber were found to be mixed with flax ones.
Although the image itself is well known, very few of us know much about the artist himself.Here is the Abstract: "We performed reproducible atomic resolution Transmission Electron Microscopy and Wide Angle X-ray Scanning Microscopy experiments studying for the first time the nanoscale properties of a pristine fiber taken from the Turin Shroud.We found evidence of biologic nanoparticles of creatinine bounded with small nanoparticles of iron oxide. You can also find them listed alphabetically by author on the Website Library page.
Each listing includes a brief description of its content.Analysis of micro-particles vacuumed from the Turin Shroud by Irene Calliari and Caterina Canovaro - MATEC Web of Conferences 36, published by EDP Sciences, 2015.