After receiving his diploma degree in Physics from the University of Münster for a project on microfluidics, Michael Esseling moved into the field of micro-particle manipulation and obtained his PhD in the group of Prof. Cornelia Denz in 2014 for his thesis Photorefractive Optoelectronic Tweezers and Their Applications. His further research interests include the use photophoretic forces and accurately shaped light fields - so-called bottle beams - for handling absorbing matter on the microscale.