〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗〖$PVDF$〗