Contact Line Ice Nucleation Is the Dominant Freezing Mechanism for Water on Macro- and Microscopic Polypropylene Surfaces

This data repository contains experimental raw data which are presented in Bieber et al., Contact Line Ice Nucleation Is the Dominant Freezing Mechanism for Water on Macro- and Microscopic Polypropylene Surfaces, ACS Langmuir, 2025 (DOI: 10.1021/acs.langmuir.5c04321). Data are structured in several folders: -) The folder Screenshots_freezing_locations contains the screenshots from the high-speed camera videos which were used to evaluate the onset locations of freezing. -) The folder Evaluated_freezing_locations_and_temperatures contains the evaluated onset freezing locations in polar coordinates for droplets on flat substrates and in contact line yes/no format for fibers. This spreadsheet also contains the freezing temperatures of the droplets. -) The folder Contact_angles_OCA_tensiometer contains the contact angles which were measured with the optical contact angle (OCA) tensiometer. Measurements include droplet contact angle changes upon volume adjustments (Advancing_and_receding_contact_angles) and during a cooling cycle (Droplet_contact_angle_upon_cooling). High-speed raw videos are available upon request from the authors.