| 摘要 |
<p>A material handling tool (10) includes a piezoelectric motor (3) that causes actuation of a needle (4). Actuation of the needle may include aspiration and/or dispensing of a fluid sample and/or movement of the needle to pick or place a material sample. Since in this illustrative embodiment each of the piezoelectric motors (3) is coupled to a corresponding pipette cavity, movement of the drive shaft (31) by the piezoelectric motor (3) actuates a corresponding needle (4). Thus, each needle (4) of the array on the tool (10) may be individually actuated by providing appropriate signals to the piezoelectric motors (3).</p> |
