Science Advances

Supplementary Materials

The PDF file includes:

  • Fig. S1. Cross-section SEM images of the prepared samples.
  • Fig. S2. Magnetization curves of the prepared samples.
  • Fig. S3. Optical properties of the prepared samples.
  • Fig. S4. Magnetization direction of multiple FMSMs and single FMSM.
  • Fig. S5. Motion trajectories of an FMSM in various media over 5-s time frames.
  • Fig. S6. Optical images of the FMSMs under different illuminations.
  • Fig. S7. Fluorescence time-lapse images of static and moving FMSMs in bacterial supernatants.
  • Fig. S8. MSD of the microtracers caused by the motion of the FMSMs.
  • Fig. S9. Fluorescence responses of the FMSMs toward different substances.
  • Fig. S10. The survey results of the alignment of CROP segment of C. diff toxin B (amino acids 1830 to 2366) using Smart BLAST provided by the National Center for Biotechnology Information online.
  • Fig. S11. Schematic for the structures of C. diff toxins and mechanism of quenching by the CROP segment of C. diff toxins to CDs on the FMSMs.
  • Fig. S12. Fluorescence changes in different motion modes.
  • Fig. S13. Detection calibration curves of the FMSMs.
  • Fig. S14. Future automated control detection strategy.
  • Table S1. Specific surface areas and pore parameters of the samples.
  • Legends for movies S1 to S5

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Other Supplementary Material for this manuscript includes the following:

  • Movie S1 (.mp4 format). Magnetic actuation of the FMSMs using a rotating magnetic field.
  • Movie S2 (.mp4 format). Swimming of the FMSMs in different media.
  • Movie S3 (.mp4 format). Fluorescence tracking of the FMSMs in different media.
  • Movie S4 (.mp4 format). Automated fluorescence signal–based servoing of the FMSMs in predefined trajectories.
  • Movie S5 (.mp4 format). Fluorescence detection using the FMSMs in clinical stool supernatant.

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