Week 9

Title: The type of piezo-electric

Objective:

1. To find suitable type of piezo-electric that is suitable for this project.

Method:

1. Do the research in the internet.
2. Find the available type in the market.

Result:

The coefficients d33 of a piezoelectric bar, (C / N) shown in Table I, link the amount of electrical charge (Coulomb), appearing on an electrode perpendicular to the axis 3, to the strain (Newton) applied on both ends.

Material	d33(10-12 C/N)
Quartz	2.3
BatiO3	90
PbtiO3	120
PZT	560
PZN-9PT	2500

The type of pieze-electric that will use for this project is PZT type because of its sensitivity and long-term period of lifetime that is suitable to use in this project,

Conclusion:

The type of piezo-electric must be hardy and can long last to make sure it can work efficiently.