Recent research from the University of West Bohemia has unveiled a groundbreaking methodology for modeling percolated conductive networks in nanoparticle-based thin films. Led by Stanislav Haviar from the Department of Physics and NTIS – European Centre of Excellence, this study, published in ‘Applied Surface Science Advances’, holds significant implications for the construction industry, particularly in the development of advanced materials with enhanced electrical properties.
The team synthesized copper oxide nanoparticles using a magnetron-based gas aggregation source, producing two sizes by varying the exit orifice diameter. This innovative approach allowed for a detailed characterization of the films through various advanced techniques, including scanning electron microscopy and X-ray diffraction. Haviar noted, “Our comprehensive characterization enables us to understand how the morphology and distribution of nanoparticles influence the conductive properties of the films.”
One of the key achievements of this research is the creation of virtual films through a data-driven stochastic 3D microstructure model. This model employs a sphere packing algorithm that accounts for particle size distribution, porosity, and vertical density profiles. The refinement of these 3D structures to include oxidation effects and surface roughness mirrors real-world conditions, making the findings particularly relevant for practical applications.
The study further delves into the effects of oxygen adsorption on surface conductivity, utilizing a computational model that simulates these interactions. The researchers computed the electrical conductivity of percolated networks within the virtual structures using the finite element method, providing insights that are crucial for optimizing the performance of materials in various environments. “By simulating resistivity values under different oxygen partial pressures, we can predict how these materials will behave in real-world applications,” Haviar explained.
The implications of this research extend beyond academia into the commercial sphere, particularly in construction. As the industry increasingly seeks materials that are not only durable but also possess unique electrical properties, the ability to engineer thin films with tailored conductivity could lead to innovations in smart buildings and enhanced energy-efficient systems. This could pave the way for new applications such as self-sensing materials or advanced coatings that respond to environmental changes.
As the construction sector continues to evolve, the findings from this study could serve as a catalyst for developing next-generation materials. With the integration of advanced nanotechnology into construction practices, the potential for improved functionality and sustainability in building materials is immense. The research by Haviar and his team represents a significant step forward in understanding and harnessing the capabilities of nanoparticle-based thin films.
For more details on this research, you can visit the University of West Bohemia’s website at lead_author_affiliation.
