Science Advances

Supplementary Materials

This PDF file includes:

  • Comparing the elastic energy of a single feature supported on a substrate
  • Hertzian contact model of a deformable finger
  • Model parameters
  • Two-alternative forced-choice test counterexample
  • Analyzing participant responses
  • AIC for all modeling scenarios
  • Finite element model of strain fields
  • Testing generalization accuracy using leave-one-out cross-validation
  • Validation of findings on a second set of slabs
  • Power analysis
  • Fig. S1. Schematic of indentation depth and contact area.
  • Fig. S2. Flowchart for analyzing participant responses.
  • Fig. S3. AIC of all scenarios for both psychophysical tests.
  • Fig. S4. Finite element modeling of stress between micropatterned surface and finger.
  • Fig. S5. Leave-one-out cross-validation of participant responses of the two-alternative forced-choice test.
  • Fig. S6. Leave-one-out cross-validation of participant responses of the magnitude estimation test.
  • Fig. S7. Validating results with psychophysical testing on a second set of slabs.
  • Table S1. Model parameters for the finger and substrate.
  • Table S2. Slab parameters.

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