Understanding the petal effect: Wetting properties and surface structure of natural rose petals and rose petal-derived surfaces Parra Vicente, Sergio Ibáñez Ibáñez, Pablo Francisco Cabrerizo Vílchez, Miguel Ángel Sánchez Almazo, Isabel María Rodríguez Valverde, Miguel Ángel Montes Ruiz-Cabello, Francisco Javier Petal surfaces Drop retention Templating The petal effect is identified as a non-wetting state with high drop adhesion. The wetting behavior of petal surfaces is attributed to the papillose structure of their epidermis, which leads to a Cassie-Baxter regime combined with strong pinning sites. Under this scenario, sessile drops are pearl shaped and, unlike lotus-like surfaces, firmly attached to the surface. Petal surfaces are used as inspiration for the fabrication of functional parahydrophobic surfaces such as antibacterial or water-harvesting surfaces. In this work, two types of rose petals were replicated by using a templating technique based in Polydimethylsiloxane (PDMS) nanocasting. The topographic structure, the condensation mechanism under saturated environments and the wetting properties of the natural rose petal and their negative and positive replicas were analyzed. Finally, we performed prospective ice adhesion studies to elucidate whether petal-like surfaces may be used as deicing solutions. 2024-05-28T08:35:14Z 2024-05-28T08:35:14Z 2024-03-04 journal article Parra-Vicente, Sergio, et al. Understanding the petal effect: Wetting properties and surface structure of natural rose petals and rose petal-derived surfaces. Colloids and Surfaces B: Biointerfaces 236 (2024) 113832 [10.1016/j.colsurfb.2024.113832] https://hdl.handle.net/10481/92141 10.1016/j.colsurfb.2024.113832 eng http://creativecommons.org/licenses/by-nc/4.0/ open access Atribución-NoComercial 4.0 Internacional Elsevier