Fig. 5: Atomistic simulations for the uniaxial compression of the ND/DMG composite and pure DMG nanopillars.

a, Atomic configurations of the ND/DMG composite nanopillar with a diameter D of 10 nm. b, Bonding structures in the cross-section of the ND/DMG composite nanopillar with diameter D of 10 nm. c, Compressive stress–strain (σ–ε) curves of simulated samples with different diameters. d–f, A sequence of snapshots of a pure DMG nanopillar with a diameter D of 10 nm during compression. g, Bonding structures in the cross-section of the pure DMG nanopillar at a compressive strain of 36%. h–j, A sequence of snapshots of a ND/DMG nanopillar with a diameter D of 10 nm during compression. k, Bonding structures in the cross-section of the ND/DMG composite nanopillar at a compressive strain of 36%. The white dotted lines in h–j describe the profiles of diamond nanoparticles embedded in the matrix. The atoms in d–f and h–j are coloured according to their von Mises atomic strains, denoted with the colour bar. The atoms in b, g and k are coloured according to the bonding types.