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Description
Nanoparticle coatings find use in a diverse range of applications, from layers that improve the efficiency of solar panels to protective coatings for joint implants. Various technological processes are used for applying nanoparticle coatings, depending on the desired properties of the coating, the coating material, or even the size and shape of the object being coated. One of the most versatile and suitable methods for most industrial applications is spray deposition.
The final structure of the coating is influenced by many parameters (fluid properties, the size and speed of the spray droplets, the temperature of the surroundings and the surface). In the Multiphase Flow Laboratory, we focus on the influence of individual parameters on the applied coating. We use a spray device based on an ultrasonic nebulizer, which allows us to vary both the size and speed of the spray droplets. The device allows working with various liquids. Currently, we are working with water and ethanol, both saturated with nanodiamonds or TiO2 nanoparticles.
Our goal is to understand how the deposition processes are connected with the spray parameters. This will allow us to design the spray device and its operating parameters based on the requirements for the structure of the nanoparticle coating.
This topic is being investigated together with the Chemical Processes and Biomaterials team from the University of West Bohemia in Pilsen as part of the MEBioSys top research project.
Contakt
prof. Ing. Jan Jedelský, Ph.D.
Energy Institute, FME BUT
e-mail: jedelsky@fme.vutbr.cz
tel.: +420 541 143 266
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