The lace ship.

This is some sort of dust that landed on my sample before etching - I do try to clean dust off, but I don’t get everything removed.  This particular sample had a few of these airy, lacy dust particles - I’m not sure what they are made of.  A typical skin cell is about 30um in diameter, so this is much smaller than even a single one of those.  I was particularly unhappy to see this one, since it landed on one of my structures, and cast a shadow over it during etching.

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