Metal microspheres propelled by shock wave based on the fiber structure laser propulsion

Laser Lift‐Off Technologies for Ultra‐Thin Emerging Electronics: Mechanisms, Applications, and Progress

“…[33] As shown in Figure 6a, the pulsed laser output from the fiber structure is focused in the air to generate plasma and shock waves, and the shock waves propagate outward in a discontinuous spherical shape. [63] In addition, there is a clear intensity gradient during the shock wave propagation, and at the same location, the shock wave intensity [32] Copyright 2014, Wiley. c-f) Temporal evolution of the evaporated area and the HAZ.…”

“…The application of the shockwave effect to the LLO process also depends on the irradiation method, as well as the response material and laser properties. [66,67] As shown in Figure 6e, in the case of surface laser ablation, direct laser irradiation of the absorber layer can lead to direct ablation of the responsive [63] Copyright 2021, Elsevier. c) The time and spatial distribution of the plasma pressure under glass confinement as predicted by simulation with a laser intensity of 5 GW cm −2 .…”

“…b) Shock wave intensity as a function of distance at different laser fluences. Reproduced with permission [63]. Copyright 2021, Elsevier.…”

Experimental Investigation on Morphological Characteristics and Propulsion Performance of Typical Metals Ablated with Multipulse Nanosecond Laser

“…Daniel [14] studied the ultrashort laser working form that optimizes the propulsion performance when copper is used as an ablative working medium. Li [15] demonstrated the high propulsion efficiency of metal microspheres by irradiating stainless steel microspheres with the nanosecond laser output from optical fibers. Xu [16] analyzed the impact of different laser energies and pressures on the propulsion performance of zinc from the perspective of the impulse.…”