| 학회 | 한국공업화학회 |
| 학술대회 | 2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 22권 2호 |
| 발표분야 | 무기재료_포스터 |
| 제목 | Gallium nitride based reflective structural colour printing |
| 초록 | GaN is a low-k material with a band gap of about 3.4eV and no interband transition over the entire visible spectrum, therefore excluding any losses from the required wavelengths. Subsequently, GaN based electronics have the potential to drastically cut energy consumption. Mie resonances, the combination of the electric and magnetic responses in structures much smaller than the wavelength of light, are exploited by engineering the dimensions and periodicity of the GaN rod structures. We show that a full range of spectral colours can be achieved with a large gamut in reflection mode, by varying the periodicity and filling factor of the GaN scatterer. Here, we demonstrate high reflectivity over the whole region of optical wavelengths. The reflected wavelength is red shifted by increasing the periodicity of the structures, with a reflection peak of over 0.75. The saturation of the colour can be simultaneously controlled by adjusting the filling factor of the nanorod. |
| 저자 | Trevon Badloe, 노준석 |
| 소속 | 포항공과대 |
| 키워드 | GaN; Reflective metasurface; structural colour; colour printing |
