Self-made
Hannu Korhonen
First version 2002. Second version and updating 2008.
2002
The drop for example of ionized water is set on the surface with a pipette and the sessile drop is then imaged with microscope (Olympus SZ-PT ) equipped with a digital camera (Olympus Camedia C-3030 zoom). Using a 45° angle mirror, the image of the drop is converted to a side profile. The side profile is photographed and at the both sides of the drop contact angles are measured using a computer and GIMP-program.
Estimation of Surface Free Energy via Contact Angle Measurements and Drop Shape Analysis
Functional properties of the surfaces
Wettability studies
Microscope (Olympus SZ-PT) equipped with a digital camera (Olympus Camedia C-3030 zoom). GIMP software for the evaluation of the drop images.
Well cleaned samples.
Flat samples.
No other specific size restrictions for flat samples.
No material specific restrictions.