Influencing factors of self-rotating micro device based on water droplet

Abstract

Self-propelling micro devices, which means moving spontaneously without traditional motor, have been widely studied in recent years. We proposed a new kind of self-rotating micro device based on water droplet, which can achieve rotating without any external energy. It can transform surface energy of the water droplet into kinetic energy of the micro device. And the feasibility experiment showed that the micro device work well, the numerical analysis of the micro device about the rotating velocity varied with the different center distance and number of the inclined pores provided us an empirical equation to predict the rotating property of the micro device, and an application model in micro generator field was proposed. The self-rotating micro device is a totally original self-propelling device with a green propelling mechanism to the environment.