Figure 3: Properties of the thin-film of 1.
From: Quinuclidinium salt ferroelectric thin-film with duodecuple-rotational polarization-directions

(a) Optical microscope image of the thin-film of 1 deposited on ITO-coated glass. (b) Photo of thin-film of 1 on a flexible substrate. (c) Illustration of thin-film device for ferroelectric characterization. (d) Ferroelectric hysteresis loops obtained on thin-film of 1 on ITO/glass substrate.