Microscopic fracture patterns appear clifflike on the edge of one of my samples.
This entire view is less than 10 micrometers high, meaning that it covers about
a tenth the thickness of a typical human hair. We usually don’t get patterns
like these, because we use a special wafer
![(Untitled)](/content/images/size/w795/a20c6519990868494292a9fb0b783d3a/tumblr_mzw78v0Hcj1spzrmao1_1280.jpg)