Perform the following processes.(1) Scribe 100 squares with 1mm grid on the specimen's flat surface by a sewing needle or NT cutter(Width 9mm, 35 degree angle blade) with the depth reaching to the base plastics.(2) Clean with a cloth soaked with IPA (Isopropyl Alcohol) or ethanol to degrease(3) Stick the tape by finger pressure(4) Pull it off quickly straight up two time