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

Grant number: 15/20052-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): January 01, 2016
Effective date (End): September 30, 2019
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal researcher:Luiz Antonio Pessan
Grantee:Lucas Daniel Chiba de Castro
Home 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


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)

News published in Agência FAPESP Newsletter about the scholarship:

Scientific publications
(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)
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. Web of Science Citations: 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. Web of Science Citations: 7.

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