The electron-beam lithography (EBL) facility has tools in Building 12 and Building 24. These tools facilitate writing patterns of arbitrary geometries with minimum features sizes less than 30 nanometers. Both electron-beam lithography tools share many features: field emission source, laser interferometer controlled stage capable of holding wafers op to 200 mm diameter, laser height sensing of the sample, automatic Z stage compensation, and Proximity Effect Correction (PEC) with Genisys Beamer software.