Manufacture of samples Manufacture of samples (for spectrometry, etc.) and devices (MIS capacitors, OFETs) It always begins with the preparation of each substrate. The board of appeal Cutting glass or silicon wafer to appropriate size and preparing manually. Alternatively, use the pre-cutting board as it is. Afterwards, clean the board as follows that Ultrasonic treatment for at least 10 minutes in acetone and isoprop..