Control of Orientation Distribution of Pearl Pigment by Using a Magnetic Field Modulator

Abstract

We controlled the orientation distribution of the pearl pigment by using a magnetic field modulator, resulting in a visual effect that the pattern was shown three-dimensional. We quantitatively showed that the orientation distribution of pearl pigment was equal to the direction distribution of magnetic line of force formed by the field modulator. Although the largest tilt angle of pearl pigment in the coating film was 15° , a large three-dimensional visual effect was expressed, which could be explained by the combined effect with flip-flop effect of pearl pigment.

Fig. 3

Photographs of the field modulator (a) and the coating film prepared over the modulator placed in the magnetic field of 1 T (b).