title: Structural Color Tuning: Mixing Melanin-Like Particles with Different Diameters to Create Neutral Colors.
abstract: We present the ability to tune structural colors by mixing colloidal particles. To produce high-visibility structural colors, melanin-like core-shell particles composed of a polystyrene (PSt) core and a polydopamine (PDA) shell, were used as components. The results indicated that neutral structural colors could be successfully obtained by simply mixing two differently sized melanin-like PSt@PDA core-shell particles. In addition, the arrangements of the particles, which were important factors when forming structural colors, were investigated by mathematical processing using a 2D Fourier transform technique and Voronoi diagrams. These findings provide new insights for the development of structural color-based ink applications.
authors.affiliation: Division of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
authors.forename: Ayaka
authors.initials: A
authors.lastname: Kawamura
authors.affiliation: Division of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
authors.forename: Michinari
authors.identifier: 0000-0003-1118-5568
authors.initials: M
authors.lastname: Kohri
authors.affiliation: Department of Physics, Faculty of Science and Technology, Tokyo University of Science , 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Yoshioka
authors.affiliation: Division of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Taniguchi
authors.affiliation: Division of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
authors.forename: Keiki
authors.initials: K
authors.lastname: Kishikawa