| 초록 |
The structural colors of the colloidal arrays have been used for aesthetic coloration, reflection-mode color displaying and anti-counterfeiting. In this work, a microfluidic system was used to produce uniform photonic microparticles with hydrogel shell. A hydrogel shell reduces the difference in refractive index between photonic core and external phase, thereby reducing white scattering. Therefore, the color clarity which is one of the disadvantages of structural color can be improved. In addition, photonic microparticles whose surface is covered with hydrogel can improve in water dispersibility through surface modification and prevent clogging when ejected in the form of inks. The manufactured particles can express the structural color by drawing a line or plane in the form of inkjet. As a result, the fabricated photonic microparticles exhibit improved structural color than before, and they can easily form any desired shape we want. |
