Table 4.

The $r_{33}$ values of films’ chromophore/APC with different concentrations.

Chromophores	${\mathit{r}}_{33}$ with 15 wt%	${\mathit{r}}_{33}$ with 25 wt%	${\mathit{r}}_{33}$ with 35 wt%
A	13 pm/V	18 pm/V	15 pm/V
B	17 pm/V	28 pm/V	18 pm/V
C	23 pm/V	32 pm/V	38 pm/V
D	29 pm/V	43 pm/V	54 pm/V