**5. Conclusion**

A novel high-resolution 3D printing, named as high-resolution Electric-field-driven Jet 3D Printing, which is based on the induced electric field and EHD cone-jetting behavior, has been developed to provide a feasible approach to implement additive manufacturing with multiscale and multi-material. In this chapter, we introduced the system setup and the principle of EFD jet deposition 3D printing. Then, the jetting molding mechanism and influencing rules of operating parameters were revealed by the numerical simulation and verified by the experiments. Finally, four kinds of typical applications including transparent conducting electrodes, high aspect ratio "wall" structure, tissue engineering scaffold, 3D electronics, etc., are presented in detailed. As a result, this new technology offers a novel solution for fulfilling multi-scale and multi-material 3D printing at low cost and good universality as well as high resolution.
