In the past two decades, micromotors have experienced rapid development, especially in environmental remediation, the biomedical field, and in cargo delivery. In this study micromotors have been synthesized from a variety of materials. Different functional layers and catalytic layers are formed through template electrodeposition (the bottom‐up method). At the same time, the article analyzes the influence of hydrogen peroxide concentration, surfactant type and concentration on the speed of the micromotors. Cargo transportation through tubular micromotors has always been a problem that people are eager to solve. In this article, we electrodeposit a layer of Ni in the microtubes, which effectively guides the microtubular motors to complete the cargo transportation. The potential applications of micromotors are also being explored. We added the prepared micromotors to the methylene blue solution to effectively enhance the degradation.

Micromachines have garnered attention for their potential use in various applications, such as the fields of sensing, environmental remediation, and targeted drug delivery. The Janus micromachine that has an asymmetrical structure and important application potentials has received extensive attention. The self-propulsion of the Janus motor is produced by making full use of the solution environment. In this paper, we use a simple method to fabricate metal-oil micromechanics, which is called the Janus droplet micromachine. The Janus droplet micromachine is consisting of liquid olive oil and solid Al particles, which is driven by gas generated due to reaction between Al particles and alkaline solution. The whole motion process of the Janus droplet micromachine is investigated. In addition, direction control of the droplet micromachine with Fe particles added is demonstrated by applying external magnetic field. This solid–liquid composite Janus droplet micromachine has broad potential applications in drug transportation and other areas.