The micro- and nanotopographies of a surface influence a number of its characteristics, such as rheology (flow behavior), tribology (friction) or adhesion (bonding). We modify the flow properties of a micro-fluidic system or increase the efficiency of cell cultivation, for example, by using diamond tools to give surfaces precisely defined structures. Similarly, the optical characteristics of a material can be modified for analysis purposes by directing light through microprisms, for instance. When discreet surface structures are applied to components or die inserts, surface roughness (Ra), can be in the low, single-digit nanometer range, depending on the production process involved. Any surface geometry, from a flat surface to a highly curved, three-dimensional surface can be produced using diamond cutting processes.