Front Cover: Fabrication of Magnetically Driven Helical Micro/nanoscale Motors and Their Functionalization for Targeted Drug Delivery (4/2021)

Owing to good moving performance at low Reynolds medium and low invasiveness of magnetic field to organisms, magnetically driven helical micro/nanoscale motors attract enormous attention. In recent years, many fabrication methods for helical motors have been reported. This review by F. Qin, Y, Zhang and F. Peng sets out to provide a comprehensive summary of fabrication approaches. In addition, design strategies and further functionalization to achieve targeted drug delivery are described. More information can be found in the Minireview by Fei Peng et al.