자연모사기반 나노-마이크로패턴의 광 회절 및 간섭에 의한 투명기판의 구조색 구현

• 영문명: Bio-inspired Structural Colors of Transparent Substrate based on Light Diffraction and Interference on Microscale and Nanoscale Structures
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 박용민(Yong Min Park) 김병희(Byeong Hee Kim) 서영호(Young Ho Seo)
• 간행물 정보: 『산업기술연구』vol.39, 33~39쪽, 전체 7쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2019.10.30

영문 초록

This paper addresses effects of nanoscale structures on structural colors of micropatterned transparent substrate by light diffraction. Structural colors is widely investigated because they present colors without any chemical pigments. Typically structural colors is presented by diffraction of light on a micropatterned surface or by multiple interference of light on a surface containing a periodic or quasi-periodic nano-structures. In this paper, each structural colors induced by quasi-periodic nano-structures, periodic micro-structures, and nano/micro dual structures is measured in order to investigate effects of nanoscale and microscale structures on structural colors in the transparent substrate. Using pre-fabricated pattern mold and hot-embossing process, nanoscale and microscale structures are replicated on the transparent PMMA(Poly methyl methacrylate) substrate. Nanoscale and microscale pattern molds are prepared by anodic oxidation process of aluminum sheet and by reactive ion etching process of silicon wafer, respectively. Structural colors are captured by digital camera, and their optical transmittance spectrum are measured by UV/visible spectrometer. From experimental results, we found that nano-structures provide monotonic colors by multiple interference, and micro-structures induce iridescent colors by diffraction of light. Structural colors is permanent and unchangeable, thus it can be used in various application field such as security, color filter and so on.

목차

1. 서 론

2. 본 론

3. 결 론

키워드

Structural color Micro and nano-structure Anodic aluminum oxidation Iridescent color