Wavelength-Dependent Motion in Light-Activated TiO2 Microswimmers Enhanced by AuSG Nanoclusters*

Active matter systems, particularly microswimmers that propel autonomously through fluid environments, offer exciting opportunities for both fundamental research and practical applications. These systems inspired by natural swarming behaviors such as he swarming of flocks of birds and schools of fish. That dynamic and concerted motion of the natural world can also be observed at the micron and nanoscale where microswimmer dynamic behaviors, consume energy to drive motion and perform tasks in fields such as environmental remediation and medicine. However, the challenges of improving catalytic efficiency and controlling directional movement remain significant. In this talk, I will present light-activated TiO2 microswimmers enhanced by AuSG nanoclusters, which display wavelength-dependent motility. By carefully tuning material interactions and using light as a trigger, these microswimmers demonstrate improved control over their motion and catalytic activity. This work aims to advance the design of autonomous microsystems for complex tasks, with potential applications in water purification and medical treatments.