Acoustic sensor principal sensing component is made up of which polymer?(a) PEO(Poly-ethylene oxide)(b) PET(Poly-ethylene tetraphthalate)(c) PVDF(Poly-vinylidene fluoride)(d) PS(Poly-styrene)The question was asked during an online exam.Question is taken from Measurement of Temperature topic in chapter Patient Monitoring System of Biomedical Instrumentation

Acoustic sensor principal sensing component is made up of which polyme

1.	Acoustic sensor principal sensing component is made up of which polymer?(a) PEO(Poly-ethylene oxide)(b) PET(Poly-ethylene tetraphthalate)(c) PVDF(Poly-vinylidene fluoride)(d) PS(Poly-styrene)The question was asked during an online exam.Question is taken from Measurement of Temperature topic in chapter Patient Monitoring System of Biomedical Instrumentation
Answer» The correct answer is (c) PVDF(Poly-vinylidene fluoride) The explanation is: Its principle sensing components is PVDF (poly-vinylidene fluoride), which is a piezo-electric polymer. It PRODUCES CHARGES of equal magnitude and OPPOSITE polarity on opposite surfaces when a MECHANICAL strain is imposed on the material.

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