Line-Scan Motion Measurement
Many motions of interest occur too quickly for typical cameras to capture.
However, if the motion occurs in a single dimension, it can be imaged using
a high-speed line-scan camera.
Unlike a typical camera, a line-scan camera contains only a single row of
pixels, but it can read out those pixels extremely quickly.
Using a line-scan camera that can operate at frequencies of up to 79 kHz,
we have imaged the response of a piezoelectric bimorph to a step change in
voltage.
Following the voltage change, the bimorph resonates at a frequency of 200
Hz,
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![[picture]](pics/stepresp.jpg)