. 2008 Jan 27;2008:639019. doi: 10.1155/2008/639019
Copyright © 2008 Daisuke Takahashi et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 4.
Piezoelectric pump and micro-needle device.