Drying of a 75μL droplet of 5% poly(ethylene oxide) solution in water. The duration of the experiment was approximately 2 hours, the distance...
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Drying of a 75μL droplet of 5% poly(ethylene oxide) solution in water. The duration of the experiment was approximately 2 hours, the distance across the image approximately 10mm. Timings given below are given relative to the video, to aid identification of the various stages and processes.
The droplet exhibits pinned drying (stage 1) for around the first 5 seconds, before depinning when the contact angle becomes lower than the measured receding contact angle. Stage 2 and bootstrap building do not take place.
