Xichen Liang, Kseniia M Karnaukh, Lei Zhao, Serena Seshadri, Austin J DuBose, Sophia J Bailey, Qixuan Cao, Marielle Cooper, Hao Xu, Michael Haggmark, Matthew E Helgeson, Michael Gordon, Paolo Luzzatto-Fegiz, Javier Read de Alaniz, Yangying Zhu
Fast and programmable transport of droplets on a substrate is desirable in microfluidic, thermal, biomedical, and energy devices. Photoresponsive surfactants are promising candidates to manipulate droplet motion due to their ability to modify interfacial tension and generate "photo-Marangoni" flow under light stimuli. Previous works have demonstrated photo-Marangoni droplet migration in liquid media; however, migration on other substrates, including solid and liquid-infused surfaces (LIS), remains an outstanding challenge...
March 27, 2024: ACS Central Science