Science Advances

Supplementary Materials

The PDF file includes:

  • Section S1. Analysis of TIR condition
  • Section S2. Microscopic characterization and analysis
  • Section S3. Analysis of air-cushioned microsphere/polymer bilayer model
  • Fig. S1. TIR condition.
  • Fig. S2. Influence of the embedded depth/diameter ratios of PS microsphere on the reflectance spectra of RSCFs assembled from 15-μm PS microspheres.
  • Fig. S3. Control experiments with 15-μm PS microspheres partially or completely embedded in the polyacrylate layer.
  • Fig. S4. Analysis of PS microsphere/polyacrylate interface.
  • Fig. S5. Comparison of the reflectance spectra between the freshly prepared (ambient temperature: 25°) and the overnight stored RSCF (ambient temperature: 20°) assembled from 15-μm PS microspheres.
  • Fig. S6. Control experiments with 15-μm PS microspheres shallowly embedded in a thinner polyacrylate layer.
  • Fig. S7. Spectral stability of the RSCF assembled from 15-μm PS microspheres.
  • Fig. S8. Measured and simulated reflectance spectra of RSCFs.
  • Fig. S9. RSCF-based cylindrical reflective delineators on a curved road.
  • Fig. S10. RSCF-based billboard for drivers and pedestrians.
  • Legends for movies S1 to S6

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Other Supplementary Material for this manuscript includes the following:

  • Movie S1 (.mp4 format). The non-iridescent colors of RSCFs.
  • Movie S2 (.mp4 format). The iridescent colors of RSCFs.
  • Movie S3 (.mp4 format). Demonstration of the large illumination-to-viewing angle of RSCF in the noncoaxial case.
  • Movie S4 (.mp4 format). RSCF-based cylindrical reflective delineators seen by a driver or a pedestrian.
  • Movie S5 (.mp4 format). RSC-based billboard seen by a driver or a pedestrian.
  • Movie S6 (.mp4 format). RSC-based interactive warning indicator.

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