Development of bioinspired superhydrophobic coatings via layer-by-layer deposition

• Grant number: 15/20052-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: January 01, 2016
• End date: September 30, 2019
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Luiz Antonio Pessan
• Grantee: Lucas Daniel Chiba de Castro
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated scholarship(s): 18/06456-0 - Development of Raspberry-like SiO2 nanoparticles for application in bio-inspired superhydrophobic coatings, BE.EP.DR

Abstract

A large number of organisms exhibit properties of technical and economic interest. Among them, we highlight an aquatic plant named Nelumbo nucifera, popularly known as Lotus Flower and eternally admired for their superhydrofobic properties resulting from their high surface roughness. Inspired by the elegant Lotus structure, various methods have been proposed for obtaining superhydrofobic surfaces. However, basically all developed methods show technical and/or economic limitations. The layer-by-layer deposition (LbL) is a versatile, low-cost technique used for producing various types of coatings. The LbL is based in the alternately deposition of polyelectrolytes, inorganic particles or macromolecules of opposite charges on electrostatically charged substrates. Surfaces with controlled roughness can be obtained by the alternately deposition of polyelectrolyte and inorganic nanoparticles, making this system as an interesting alternative to mimic the lotus structure. So, this project focus in the development of superhydrofobic coatings via layer-by-layer deposition of polyelectrolites and inorganic nanoparticles using dip coating and spray coating techniques. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE CASTRO, LUCAS D. C.; LAROCCA, NELSON M.; OLIVEIRA, JR., OSVALDO N.; PESSAN, LUIZ A.. An Efficient Substrate-Free Method of Producing SiO2-Based Nanoparticles for Superhydrophobic Applications. ACS OMEGA, DEC 2021. (20/02938-0, 18/22214-6, 15/20052-0)

CHIBA DE CASTRO, LUCAS DANIEL; LAROCCA, NELSON MARCOS; PESSAN, LUIZ ANTONIO. Towards the development of superhydrophilic SiO2-based nanoporous coatings: concentration and particle size effect. Thin Solid Films, v. 651, p. 138-144, APR 1 2018. (15/20052-0)

DEMIROERS, AHMET F.; POLONI, ERIK; CHIESA, MADDALENA; BARGARDI, FABIO L.; BINELLI, MARCO R.; WOIGK, WILHELM; DE CASTRO, LUCAS D. C.; KLEGER, NICOLE; COULTER, FERGAL B.; SICHER, ALBA; et al. Three-dimensional printing of photonic colloidal glasses into objects with isotropic structural color. NATURE COMMUNICATIONS, v. 13, n. 1, p. 9-pg., 2022-07-29. (15/20052-0, 20/02938-0, 18/06456-0)

CASTRO, LUCAS D. C.; LAROCCA, NELSON M.; PESSAN, LUIZ A.. Effect of Structural Features on the Superhydrophobicity of SiO2-Based Coatings. Langmuir, v. 37, n. 1, p. 124-131, JAN 12 2021. (15/20052-0)