Science Advances

Supplementary Materials

The PDF file includes:

  • Fig. S1. Colloidal migration under α-ketoglutaric acid gradients.
  • Fig. S2. Negatively charged PS particles move down α-ketoglutaric acid gradients.
  • Fig. S3. DP focusing/defocusing under acid-base gradients.
  • Table S1. Parameters used for numerically calculating the concentration profile of PS particles migrating under an SDS flux, generated by a source-sink pair of SI beacons.
  • Table S2. Diffusivity and solubility of benzoic acid and calcium hydroxide in water.
  • Legends for movies S1 to S9

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Other Supplementary Material for this manuscript includes the following:

  • Movie S1 (.mp4 format). A pNIPAm beacon with residual photoinitiator (α-ketoglutaric acid) undergoing phase transition at the LCST (33°C).
  • Movie S2 (.mp4 format). A pNIPAm beacon from which all the solute has been flushed out, undergoing phase transition at the LCST.
  • Movie S3 (.mp4 format). SI dipole interaction between a beacon source (left) that releases SDS and a beacon sink (right) that absorbs the solute.
  • Movie S4 (.avi format). COMSOL computations revealing the behavior of particles under an SI dipolar flux, reproducing the experimental observations of movie S3.
  • Movie S5 (.mp4 format). SI interaction between two sources releasing distinct solutes.
  • Movie S6 (.mp4 format). A beacon source releasing SDS attracts decane drops (black) and simultaneously repels negative PS particles (white).
  • Movie S7 (.mp4 format). Two distinct beacon sources, one releasing SDS (left) while the other releasing C6mimI (right), attract decane drops (black) and negative PS beads (white), respectively, separating them from the mixture.
  • Movie S8 (.mp4 format). SI migration of positively charged particles driven by beacon sources that release solutes that react with each other.
  • Movie S9 (.mp4 format). SI migration of negatively charged particles driven by beacon sources that release solutes that react with each other.

Files in this Data Supplement: