Metrigraphics (Lowell, MA) recently introduced a series of micron-scale flexible circuits and thin film devices. Micron-scale flexible circuits can be achieved with six or more layers high with traces (circuit lines) as narrow as 3 microns (11.81x10-5 inches). Metrigraphics employs a mix of proprietary and industry-standard processes including high-resolution photolithography as well as sputtered thin-film and plated metal deposition. Multilayer flexible circuits are constructed of several independently stacked, aligned and interconnected layers composed of very thin sputtered metal or thicker-plated metal, such as gold or copper, on polyimide substrates. Plated conductive vias connect the different layers as required. Metrigraphics offers via sizes down to a 25-micron diameter.