Geiskopf Sebastien received a master's degree in physics in 2016. He completed a Ph.D. centered around the optical and vibrational characterization of silicon-rich silicon oxide thin film doped with phosphorus and silicon phases. For his current postdoctoral position at the Institut Jean Lamour (Nancy, France), his expertise in fundamental and applied physics is applied to textile cleaning by ultrasound system and optimize parameters of the ultrasound system.