상세정보
학술지
Generation of Highly Integrated Multiple Vivid Colours using a Three-dimensional Broadband Perfect Absorber
- 저자
- 김수정, 정필훈, 김원중, 이헌, 홍성훈
- 발행일
- 201910
- 출처
- Scientific Reports, v.9, pp.1-9
- ISSN
- 2045-2322
- 출판사
- Nature Research
- 협약과제
- 19ZB1100, 3D Photo-Electronics 원천기술 개발, 백용순
- 초록
- The colour printing technology based on interactions between geometric structures and light has various advantages over the pigment-based colour technology in terms of nontoxicity and ultrasmall pixel size. The asymmetric Fabry?밣erot (F?밣) cavity absorber is the simplest light-interacting structure, which can easily represent and control the colour by the thickness of the dielectric layer. However, for practical applications, an advanced manufacturing technique for the simultaneous generation of multiple reflective colours is required. In this study, we demonstrate F?밣 cavity absorbers with micropixels by overcoming the difficulties of multi-level pattern fabrication using a nanoimprinting approach. Our asymmetric F?밣 cavity absorber exhibited a high absorption (approximately 99%) in a wide visible light range upon the incorporation of lossy metallic materials, yielding vivid colours. A high-resolution image of eight different reflective colours was obtained by a one-step process. This demonstrates the potential of this technology for device applications such as high-resolution colour displays and colour patterns used for security functions.
- KSP 제안 키워드
- Advanced Manufacturing, Cavity absorber, High absorption, Metallic materials, Multi-level, Pixel size, Printing technology, Three dimensional(3D), Visible light range, device applications, dielectric layer