Passive Amplification Effect in Thin Pyroelectric Films

Abstract

Here we continue the description of the previously found passive amplification effect in thin pyroelectric films placed on a massive heat-conducting substrate. We show that in the definite modulation frequency range the amplification effect occurs i.e., a current generated by a thin pyroelectric film placed on substrate exceeds that in freely suspended film. The frequency dependence a pyroelectric current is illustrated by set of examples including achiral ferroelectric liquid crystals, ferroelectric polymers and polycrystalline compounds.

Keywords:

• Ferroelectric polymers
• liquid crystals
• polycrystalline pyroelectrics
• pyroelectric effect

Acknowledgment

S. V. Yablonskii thanks RFBR № 09-08-00362-a and E. A. Soto-Bustamante Fondecyt project № 1071059 for financial support.