Research on laser-induced plasma shock wave propulsion microspheres based on fiber structure

This paper presents a novel approach to microsphere propulsion by harnessing laser-induced plasma shock waves through fiber structures. The research provides a comprehensive analysis of various propulsion aspects, including motion characteristics (distance, velocity), propulsion efficiency, power sources, and potential applications. To gain deeper insights into the experimental outcomes, a physical model of the fiber propulsion structure was developed. The investigation highlights the substantial impact of factors such as laser energy, microsphere size, and fiber structure design on the motion characteristics and propulsion efficiency of microspheres, as evidenced by the analysis of experimental and simulation data. Analysis of characteristic peaks in the plasma spectrum confirms that the power propelling the microsphere is derived from the shock wave generated by air plasma expansion. Moreover, the direction of microsphere movement indirectly validates the spherical expansion of the shock wave, aligning with simulation findings. Notably, the fiber structure is shown to have the capacity to manipulate the shock wave's propagation direction, opening up possibilities for applications like laser billiard ball and surface impurity particle removal. These findings offer valuable theoretical underpinning for future research pursuits.