| 초록 |
Moth eye was well known for low reflection and remarkable light absorbing capacity over wide spectral ranges. Therefore, moth eye-like patterned poly(vinyl alcohol) (PVA) films selectively containing titanium dioxide (TiO2) nanoparticles in the microdome were fabricated to mimic low reflection property of a real moth eye including the photo-catalyst of TiO2 for the photo-responsive moth-eye patterned films (MEP), which have applications on eyeglasses, display systems, and higher absorptivity for solar panels. PVA-TiO2 MEP film was fabricated by two steps. The first step was the fabrication of template films prepared by in situ pore filling of TiO2 nanoparticles by the modified breath figure method. Secondly, PVA solution was poured and then detached for the moth-eye patterned films. PVA-TiO2 MEP film was transparent almost similar to the pristine PVA flat film, however, showed a reversible photochromism that changes to blue color by UV illumination and recovered by visible light. |
