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9.4 Dynamic Mode
This mode captures a video sequence showing the dynamic interaction between the liquid and the
surface. Here the dynamic wetting (contact angle), liquid penetration (volume) and spreading is
measured as a function of time. After a droplet has been pumped out at the dispensing tip, a new test is
started when the Measure button is pressed. The droplet must then be applied on the specimen surface
within 30 seconds (see Section 7.4 for details).
The Diagram window
at the top of the screen is updated after each measurement with a new set of
data points showing the dynamic change in contact angle, drop volume, droplet base or droplet height
as a function of time. When two or more droplets have been tested, the average response for the
droplets in a batch is displayed as a continuous line.
PLEASE NOTE: A drop result is excluded from the batch result if the tick box is left unchecked.
The Results window
is updated with a new data set as soon as a new measurement is done. Each line
corresponds to a specific image captured at the indicated time. Click on a data set to the left of the
diagram to highlight it and the corresponding data will appear in the Results Window.
How to delete a droplet result
Uncheck the tick box in front of the data set to exclude it from the batch data.
You can also click on a data set to highlight it and then use the ReDo function to replace the existing
data with a new measurement.
Fig. 9.6 Main Program screen in Dynamic Mode
