Department of Aerospace Engineering, Chosun University, Gwangju 61452, Republic of Korea.
J Nanosci Nanotechnol. 2021 Jul 1;21(7):3919-3922. doi: 10.1166/jnn.2021.19235.
Structural colors based on nanostructured surfaces are an environmentally friendly alternative to dyes and pigments. In this study, structural colors were produced by spherical silica nanoparticles. By controlling the size of the spherical silica nanoparticles, the changes in color were controlled. The sizes of the nanoparticles were controlled by adjusting the ammonia content in the conventional Stöber method. Spherical silica nanoparticle powders were obtained using a centrifuge and an ultrasonic grinder oven, which were subsequently dispersed in deionized water and alcohol for dip coating. The particle sizes of the samples increased with increase in the amount of ammonia used in the synthesis process and were not affected by the dip coating. Spherical silica nanoparticles were uniformly arranged on the surface of the glass slides for all the samples studied. Thus, the structural colors produced by the spherical silica nanoparticles changed according to the particle size, which can be controlled by the ammonia content during synthesis.
基于纳米结构表面的结构色是一种环保的替代品，可替代染料和颜料。在本研究中，通过球形二氧化硅纳米粒子产生结构色。通过控制球形二氧化硅纳米粒子的尺寸，可以控制颜色的变化。通过调节常规 Stöber 法中的氨含量来控制纳米粒子的尺寸。使用离心机和超声研磨烘箱获得球形二氧化硅纳米粒子粉末，随后将其分散在去离子水和酒精中进行浸涂。随着合成过程中使用的氨的量的增加，样品的粒径增加，并且不受浸涂的影响。所有研究的样品中，球形二氧化硅纳米粒子在玻璃载玻片表面上均匀排列。因此，由球形二氧化硅纳米粒子产生的结构色根据颗粒尺寸而变化，这可以通过合成过程中的氨含量来控制。
