Study on the subjective brightness of photonic crystal structural colored wood products

ABSTRACT

Photonic crystal structural color is a novel method in the field of colored coating on the surface of wood products. However, the subjective brightness of photonic crystal structural colored wood products under different color temperature light sources has not been studied. In this study, poly(styrene-methyl methacrylate-acrylic acid) latex microspheres with different diameters were used to construct photonic crystal coatings on wood surface. The subjective brightness psychological quantity under different color temperature light sources was obtained. Combined with the optical properties of the coatings, the correlation between the physical optical properties of the photonic crystal coating, the color temperature of the light source and the subjective brightness of the coating was obtained. The photonic crystal coating in the near red visible light wavelength range had higher subjective brightness under low color temperature light source, and coating in the near purple visible light wavelength range had higher subjective brightness under high color temperature light source. The subjective brightness of the photonic crystal coating was very closely related to the light source color temperature and closely related to the reflectivity of the coating. This study expands the research on the optical properties of photonic crystal structure colored wood products.

KEYWORDS:

• P(St-MMA-AA)
• subjective brightness
• color temperature
• aspen wood

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Natural Science Foundation of Jiangsu Province (grant number BK20230403, Jiangsu Provincial Department of Science and Technology); Postgraduate Research & Practice Innovation Program of Jiangsu Province (grant number KYCX23_1196, Jiangsu Education Department); Postdoctoral Research Project of Zhejiang Province (grant number 271235, Zhejiang Province Human Resources and Social Security Department); Qing Lan Project (Jiangsu Education Department).