Fig. 5: Scratch tests for isosceles triangular and star-shaped ceramic microparticles (MPs) with SiO2, Al2O3 and Si3N4 materials.
From: One-pot microfluidic fabrication of micro ceramic particles
a Schematic illustrations of scratch tests using various MPs and multiple substrates including T2 copper (Cu), 7075 aluminum alloy (Al), polystyrene (PS), polymethyl methacrylate (PMMA) and wood. b Summary of the maximum forces for different MPs’ cusps to withstand (CFmax) before failure, data are represented as mean values ± s.d. from three samples. c Hardness characterization for various substrates, data are represented as mean values ± s.d. from three samples. d Optical images and e 3D topographical maps of different scratches by Al2O3 MPs. f 2D cloud maps of scratches by Al2O3 MPs with cross-sectional profiles floating above. g Summary of width (w), depth (h) and volume loss of different scratches using different MPs and substrates, data are represented as mean values ± s.d. from three samples. Source data are provided as a Source Data file.
