[Pradeep]

Hi,

I am a post graduate in south Asia. I am trying to learn impedance spectroscopy. I want to measure the complex impedance of a conducting polymer film. What should be the equivalent circuit for the conducting polymer film? RC in series or RC in parallel?

I cannot understand how a semi circle type nyquest plat is origin. Is that giving sense , the real part of the sensor also changing with frequency? how could that happen? Please be kind enough to help me.

Thank you.