Robert Villarreal, a Los Alamos National Lab chemist, carried on the research on a sample Rogers had after Rogers passed away.
From a purely scientific perspective, a number of excellent and important papers were presented. Most notable among these was the paper presented by Robert Villarreal of Los Alamos National Laboratory (LANL). The paper, titled, “Analytical Results on Threads Taken from the Raes Sampling Area (Corner) of the Shroud” presented the data obtained by nine Los Alamos scientists that examined Raes Sample threads from the Raymond Rogers Collection, which is in my care. When I first received the materials from the Rogers family, I noticed that one important sample was missing, Raes #1, the apparent end-to-end spliced thread that Rogers had identified. More than a year passed before I received the contents of Ray’s computer and it was only then that I discovered that Ray had given the sample to several of his LANL colleagues for scientific analysis just two weeks before he died. Fortunately, Ray had included their names, so I immediately contacted Bob Villarreal at the lab, introduced myself and asked him about the missing sample, which of course he still had in his possession. At that point (and much relieved that I had found the sample), I asked him if he would be willing to continue the work he had begun several years earlier with Ray. He enthusiastically agreed and over the past year I made some additional samples available to him and his team. This paper presents the results of their analyses of those samples.
https://www.shroud.com/ohioconf.htm
Villarreal confirmed chemical differences between the ends of the threads using X-ray Photoelectron Spectroscopy (XPS), Infrared Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), and many other tests.
You can read the report at:
https://www.shroud.com/pdfs/ohiovillarreal.pdf
https://debatingchristianity.com/forum/viewtopic.php?p=1113618#p1113618