The process of bubble printing of MXene-based patterns is shown in Figure , and is described as follows: (1) MXene dispersion is pipetted on the PET film. (2) The laser is focused on the substrate-liquid interface, and the heating induced by absorption of light by the MXene nanosheets heats the solvent to form a microbubble at the substrate/liquid interface. The surface tension gradient caused by the formation of the bubble induces Marangoni convection, causing colloidal particles to be drawn toward the microbubble. (3) After encountering the bubble interface, the MXene particles become immobilized on the substrate at the triple contact line, due to a combination of forces, especially capillary and Van der Waals (VdW) interactions. The movement of the microscope stage then provides the capability to print arbitrary patterns of assembled MXene particles. The adhesion of the MXene patterns onto the PET substrate is realized without the need for functionalization of the glass substrate, which may be due to melting and cooling of the PET where MXene is deposited. ( ) Bubble printed MXene patterns on the PET substrate are ready for use after being rinsed with water and dried under compressed air.