Sample preparation procedure:
- Take a clean substrate. Cut a strip double-sided adhesive tape slightly larger than the sample.
- Stick the adhesive to the substrate. Smooth its surface out with the back of tweezers to remove air bubbles.
- Put the sample on the adhesive tape and carefully press it with tweezers in several places (not touching the area intended for investigation).
Note: After the sample is fixed on the substrate, a noticeable vertical drift of the sample can occur within on hour (due to slow relaxation of adhesive tape). This drift should be taken into account. If a minimal drift is required due to the nature of the investigation, prepare the sample beforehand (at least an hour before investigating).