(61a) Enhancing Light Transmission through Modulated Rotation of Janus Particles Via Electric Field Gradients

Electric field-induced rotation of particles provides a platform for dynamic color in display applications. Here, we explore the potential of asymmetric materials, Janus particles, to modulate light transmission by controlling particle orientation. Our investigation, conducted through numerical study, explore diverse particle geometries, including matchstick-like and snowman-like configurations, revealing insights into their rotational dynamics influenced by electric field strength and frequency. Through gram-scale synthesis, we fabricate Janus matchstick particles comprising a gold head and a silica rod, optimizing conditions to induce rotation under alternating current (AC) electric fields. Notable changes in visible light transmission, induced by particle alignment, are observed experimentally and supported by computational analysis. Our findings underscore the utility of electric field-driven rotating Janus particles for dynamic light modulation, offering promising avenues for future adaptive display technologies.