Figure 3: Nanofabrication by stamping
Microcontact printing (uCP) transfers molecules from a patterned PDMS stamp to a substrate by the formation of covalent bonds. Electrical microcontact printing (e-uCP) uses a flexible electrode to pattern a thin film of a material that is an electret (i.e., that accepts and maintains an electrostatic potential), probably by injecting and trapping charges.