My dear chap, give up your ideas on big molecules. There are no organic...– Heinrich Wieland to Hermann Staudinger, concerning his belief in polymers.
So maybe contact angle is not the most thrilling thing I’ve ever discussed, but I’m about to be doin’ a lot of it. (mmmm…thesis) This is a water droplet on a piece of film. See how the top image has a nice sphere, and not soggy mess? That’s hydrophobicity my friends. (Contact angle greater than 90˚) As for the one below, it is hydrophilic. (Contact angle less than...