Bulk sample Thin film Fibers and powders Reduce to disk Look through: Support on (3-mm diameter plan view grid or film or smaller)with electron-transparent Look parallel Make bulk-like regions to surface: cross section Look at surface at glancing angle: reflection FIGURE 10.2.Flow chart summarizing the different sample geometries you may encounter. 7 From David B.Williams and C.Barry Carter,Transmission electron microscopy7 From David B. Williams and C. Barry Carter, Transmission electron microscopy