1：Experimental Design and Method Selection:

The study uses a one-step electrospinning method to fabricate micromotors from a blend of PCL, Fe3O4NPs, and catalase, leveraging phase separation for asymmetric structure.

2：Sample Selection and Data Sources:

Materials include catalase, Fe3O4NPs, PCL, and chemicals from Sigma Aldrich and J&K Scientific; samples are electrospun microstructures.

3：List of Experimental Equipment and Materials:

Equipment includes a syringe pump, high voltage power source, SEM (Carl Zeiss Supra 55), fluorescence microscope (Leica DM4000M), mercury lamp (Excelitas Technologies Model X-Cite 120Q), microscope (Nikon Eclipse 80i), spectrophotometer (PerkinElmer Lambda 750), infrared thermometer (Aladdin Company I5771-01), and contact angle system (Dataphysics OCA 20). Materials include PCL, Fe3O4NPs, catalase, H2O2, mineral oil, sodium cholate, dichloromethane, DMSO.

4：0). Materials include PCL, Fe3O4NPs, catalase, H2O2, mineral oil, sodium cholate, dichloromethane, DMSO. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: PCL is dissolved in dichloromethane, mixed with catalase and Fe3O4NPs, sonicated, electrospun at 18 kV with a 21-gauge needle, 10 cm distance, and 5 mL/h flow rate. Motion is initiated in H2O2 solution, observed under microscopy, and analyzed with PhysVis software. Oil removal experiments involve dispersing oil in water with sodium cholate and H2O

5：Data Analysis Methods:

Velocity is analyzed from videos using PhysVis software; transmittance is measured with UV-Vis spectroscopy; temperature is measured with an infrared thermometer; contact angle is measured with a contact angle system.