Update 9/17/23 added a folder with Ebay CT machine scans

Update 6/23/23 Add ink-carbonized comparison (Epsilon)

My goal with these scans is to contribute by collecting new science data --- specifically, to try to understand exactly what is happening when we go from papyrus, to ink and papyrus, to carbonized ink and papyrus. Micro-CT Scans include: 

1: A scan of carbonized papyrus and ink (Mobius chip sample), as well as a visible light image with a known scale. (10 microns)

2: A set of scans of an Epsilon and Sigma inked on Papyrus, as well as visible light images. The Epsilon is notably prominent with thick ink and can be viewed without crazy methods.  (6 microns)

3: A set of scans of Phi and Sigma, before inking, after inking but before it finished drying (quick scan), and a scan after it finished drying. The data is not perfectly aligned to each other and slightly degraded. (7 microns)

4: A high resolution scan of papyrus showing microstructure before and after ink. It is difficult to align to the visible light images, but please feel free to try. The pre-and-post ink scans are very well aligned to each other. (2.5 microns) 

5: Misc. other fun scans or for segmentation practice (e.g, tiff stack of a folded t-shirt or crumpled up piece of paper) (20-50 microns)

Some disclaimers: 

I do not work at a synchrotron so the scans are different from the original data set. Biggest qualitative difference might be that those were taken on a beamline, with a monochrome x-ray source that does not experience beam hardening artifacts. It’s also a cone beam, so edges of images will look different than centers. The actual machine I am using is an XRadia Versa 620, nominal voltage usually 60kv, #nofilter, wattage about 5, projections for each scan range from 400 (fast scan before ink can dry/warmup source) to 2000 for full scans. I can give relevant hardware details if it’s important. Typical scan time for 6-10mm papyrus, 6-10 microns res is 30 minutes to an hour.

I don’t have the original samples that were buried by a volcano, and I don’t own a volcano for controlled experiments, so keep that in mind too. I used modern materials purchased from Amazon. Papyrus and India Ink mainly. I also 3d printed my own stamps (30% effective and not consistent at all) and am using my own procedure for carbonizing samples, which is probably not the same as being buried in an actual volcano either. Finally the data itself is not 100% perfect; these are funny samples to image even in ideal conditions and you really have to credit the original team for being able to do it to a 2,000 year-old scroll! 

Contact: Discord at WayneWayneHello or AhronWayne@Gmail.com