| 세션명 | 대학원생 구두발표(토론I): 포스트 분자전자 소재와 소자 기술 |
|---|---|
| 발표장 | 제8-1회장 |
| 논문코드 | OD1-3 |
| 발표일 | 2024-04-3 |
| 발표시간 | 13:20-13:30 |
| 논문제목 | Design of Patterned Structural Colors through Liquid Crystal Microdroplet Array |
| 발표자 | 최대섭 |
| 발표자 소속 | 포항공과대학교 |
| 저자 | 최대섭, 임준형, 조은수, 신지수, 김장민, 곽진석1, 김영기† |
| 소속 | 포항공과대학교; 1영남대학교 |
| 논문초록 | Microdroplets composed of liquid crystals (LCs) offer both high birefringence and rapid response to external stimuli (e.g., electric/magnetic fields), making them ideal for optical and sensory applications. However, controlling the size and local distribution while retaining high throughput remains challenging. In this work, we propose a design rule to precisely manipulate the LC microdroplets on a substrate through controlled diffusion of LCs followed by phase separation, resulting in hemispherical LC droplets. Specifically, we control both diffusion and phase separation of LCs within the polymer matrix upon heating and cooling sequences, respectively. The exact size and number density are precisely achievable by varying temperature profiles and surface characteristics(e.g., affinity, roughness). Thus, the local patterning of the substrate shows various optical textures that allow us to design spatially distinguishable structural colors. This work was supported by the NRF (RS-2023-00302586 and RS-2023-00212739). |
THE POLYMER SOCIETY OF KOREA