Piezoresistive Effect Explained
The Piezoresistive effect describes the change in electrical resistance of a material when mechanical stress is applied. This phenomenon is crucial for sensor technology.
Material Dependence of Piezoresistive Effect
The magnitude of the piezoresistive effect varies significantly across different types of materials:
- Semi Conductors: Exhibit a large piezoresistive effect. This is due to the significant changes in their band structure and carrier mobility under strain, which directly impacts resistance. Materials like silicon and germanium are widely used because of this pronounced effect.
- Conductors: Show a much smaller piezoresistive effect compared to semiconductors. While resistance does change with strain (often due to geometric changes and minor alterations in resistivity), it's generally less significant.
- Insulators: Typically display a negligible piezoresistive effect. Their electrical properties are not easily modulated by mechanical stress.
- Magnetic Materials: While some magnetic materials exhibit related effects (like magnetoresistance), the primary piezoresistive effect is most pronounced and utilized in semiconductors.
Conclusion on Piezoresistive Materials
Based on the significant change in electrical resistance under mechanical stress, the piezoresistive effect is generally found most prominently in Semi Conductors.
Similar Questions
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Important Questions from Mixed Topic (CUET PG)
- Who was the founder of Bolshevik Communist party?
- What is the key guide to statecraft in the realist tradition?
- Chronologically arrange the events in the Cold War period.
A. Berlin Wall is constructed
B. Communist China joins the UN
C. Soviet invasion of Czechoslovakia
D. Berlin Blockade
Choose the correct answer from the options given below: Morgenthau's principles of political realism are:
A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?
