Micromorphology and fractal evaluation of Dinizia excelsa Ducke wood under three different cut conditions by atomic force microscopy

An advanced characterization on the micromorphology of Dinizia excelsa Ducke was performed on the roughly sanded main wood cutting surfaces, longitudinal radial, longitudinal tangential, and transversal. AFM was applied to obtain 3D topographical images. Morphology and its correlated parameters were studied using MountainsMap software, according to the ISO 25178-2: 2012. Advanced fractal parameters, explicitly, fractal dimension, fractal succolarity, fractal lacunarity, and surface entropy, were obtained and analyzed. Each plan has a unique morphology, and the most significant roughness occurred to the tangential surface. All plans exposed similar asymmetry and kurtosis. Microtextures were similar, although the tangential surface exhibited the least spatial complexity. The fractal parameters H and beta confirmed the microtexture similarity, revealing all the surfaces have similar topographic uniformity and textures. Fractal succolarity showed that the surface percolation was significantly different. These results indicate the mathematical tools applied to topographical AFM images can map the wood surface spatial patterns.

Automated summary

The study utilized AFM images, mathematical tools, and advanced fractal parameters to analyze the microtexture of Dinizia excelsa Ducke wood surfaces. Various surface characteristics, including fractal dimensions, succolarity, lacunarity, and entropy, were investigated. The results indicated that different wood surfaces exhibit unique morphologies and roughness, while maintaining similar microtextures and topographic uniformity.