Research / 2020 / Article / Fig 1

Research Article

Ionic Species Affect the Self-Propulsion of Urease-Powered Micromotors

Figure 1

Fabrication and characterization of urease hollow silica micromotors. (a) Schematic of the fabrication process of urease micromotors. (b) SEM of the surface roughness of the hollow silica microcapsules. (c) Fluorescent ( nm) Krypton™ protein staining of the urease attached to the microcapsule surface. Inset: TEM micrograph of a microcapsule. (d) Zeta potential of the microcapsules on each step of the fabrication process and after adding urea (substrate). Results are shown as the . (e) Hydrodynamic diameter measurements of the microcapsules on each step of the fabrication process.