Figure 4: Sample-size strengthening of Mo nanopillars.
(a) Maximum flow stress before collapse plotted as a function of pillar diameter D (black dots), showing two regimes with apparently different D dependences (power law fits without considering σ0; see blue and red lines for larger and smaller diameter regimes, respectively). Green line is the fit of experimental data using equation (1). (b) Double-log plot showing two different α values, 1.0 and 0.29 for red and blue lines, respectively.
