another use for microprobes is the production of micro and nano sized devices, as in microelectromechanical systems and nanoelectromechanical systems. the advantage that microprobes have over other lithography processes is that a microprobe beam can be scanned or directed over any area of the sample. this scanning of the microprobe beam can be imagined to be like using a very fine tipped pencil to draw your design on a paper or in a drawing program. traditional lithography processes use photons which cannot be scanned and therefore masks are needed to selectively expose your sample to radiation. it is the radiation that causes changes in the sample, which in turn allows scientists and engineers to develop tiny devices such as microprocessors, accelerometers (like in most car safety systems), etc.