The ceramic shard (linked in first comment) had holes appearing in SEM because you need to make samples conductive and grounded (gold or carbon), otherwise electrons accumulate on the surface and make it invisible/cloudy in SEM.

But on topic of the article, I haven't seen single convincing photo or video of UFO. So despite collecting for 80 years, we have 0 good evidence. No need to bother with additional steps.

For me the moment when I gave up on UFO was when in comments under the "gimbal" video nobody realized that the "rotation" of the object comes from the rotation of the camera. It's like showing matches to uncontacted tribes, people are just dumb.