Science Advances

Supplementary Materials

This PDF file includes:

  • Pattern size regulation of stimuli-responsive NRs
  • fig. S1. The energy-dispersive x-ray spectrum of nanomembrane consisting of Ti, Cr, and Pd.
  • fig. S2. Hydrogen influence on NRs consisting of Ti/Cr bilayer.
  • fig. S3. The optical images depicting NRs in square pattern design.
  • fig. S4. SEM images of NR’s diameter decreasing after different concentration hydrogen stimuli.
  • fig. S5. Stimuli-responsive behavior in different hydrogen environments (1 to 5%).
  • fig. S6. Analytical calculation of NR’s curvatures as a function of internal strain and thickness of Pd layer.
  • fig. S7. XRD pattern of nanomembrane consisting of Ti, Cr, and Pd.
  • fig. S8. Cycling performance of hydrogen detection in hydrogen environment of 4% concentration.
  • fig. S9. Optical images of NRs before the test and after 20 and 30 cycles of 4% hydrogen stimuli.
  • fig. S10. Stimuli-responsive behavior related to the stimuli cycle times.
  • fig. S11. Optical image of fabricated Ti/Cr NR.
  • fig. S12. Visual effects of high-density NRs with different pattern diameters of 50 μm (left), 75 μm (center), and 100 μm (right).
  • fig. S13. Stimuli-responsive behavior of single NR in different diameters of pattern.
  • Legends for movies S1 and S2

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Other Supplementary Material for this manuscript includes the following:

  • movie S1 (.mp4 format). Stimuli-responsive behavior with 2% hydrogen.
  • movie S2 (.mp4 format). The change of FUDAN pattern NRs with 4% hydrogen under sunlight.

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