Patent ID: 7395727

Claim:
A strain detector for in-situ lift-out, comprising: a probe shaft; a first cut-out on the probe shaft; a second cut-out on the probe shaft, the second cut-out opposite from the first cut-out; the first and second cut-outs defining a first thinned region in the probe shaft; a first strain gauge mounted on the probe shaft at the location of the first thinned region; a third cut-out on the probe shaft; a fourth cut-out on the probe shaft, the fourth cut-out opposite from the third cut-out; the third and fourth cut-outs defining a second thinned region in the probe shaft; where the first and third cut-outs have a triangular cross-section; a second strain gauge mounted on the probe shaft at the location of the second thinned region; where the second strain gauge is located substantially perpendicular to the first strain gauge.