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What is Piezo Resistivity and what's its function in MOS and semiconductor materials?

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layout_designer

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Hi

What is piezo resistivity?
What role does it play in MOS and semiconductor materials?

Thanks in advance

Regards

Layout_Designer
 

v_c

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Re: Piezo Resistivity

Piezoresitance
The piezoresistive effect describes the changing electrical resistance of a material due to applied mechanical stress. The piezoresistive effect differs from the piezoelectric effect. In contrast to the piezoelectric effect, the piezoresistive effect only causes a change in resistance, it does not produce electrical charges.

Piezoresistive effect in semiconductors
The piezoresistive effect of semiconductor materials can be several magnitudes larger than the geometrical piezoresistive effect in metals and is present in materials like germanium, polycrystalline silicon, amorphous silicon, and single crystal silicon.

Check it out here http://en.wikipedia.org/wiki/Piezoresistive_effect

Best regards,
v_c
 

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