Microplastics and PM2.5 in the atmosphere are serious problems causing environmental pollution and health hazards, and there is a need to develop efficient collection technologies. Particles in the gas phase are difficult to collect compared to those in the liquid phase due to the characteristics of fluids. Many microfluidic devices have been proposed for the separation and collection of micro-particles in the liquid phase. On the other hand, there are very few microfluidic devices designed for the separation and collection of particles in the gas phase, such as PM2.5 and other dust particles. In our previous research, our group developed an electrostatic adsorption technique that utilizes dielectrophoresis to collect microbeads in the gas phase. This research aims to develop a new microfluidic device using electrostatic repulsion and establish a technology for the efficient and sustained collection and recovery of fine particles in the gas phase.
Yoneda et al. (2025) studied this question.