The Piezo-driven actuator is widely used as one critical part in the micromanipulation system for routine reproductive experiments such as Intracytoplasmic Sperm Injection (ICSI). The actuator can induce the fast mechanical motion on the pipette tip, which greatly facilitates the microinjection processes. It is of rather importance to choose the appropriate system parameters applied to the actuator. In our paper, we propose a mechanical model of the Piezo-driven actuator. We analyze the longitudinal micro-dynamic characteristics of Piezo-driven pipettes. The transient response of the pipette tip is obtained by numerical methods. We also study the effects of the excitation signals on the dynamics of the tip. The related experimental validation is conducted for our simulation results.

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http://www.exfo-lifesciences.com/products/PiezoDrill/PiezoDrill_(250KB).pdf
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