| 11. | The radius of the droplet varies with the contact angle as:
|
| 12. | Such alterations, if slow, can also produce measurably time-dependent contact angles.
|
| 13. | A maximum desorption energy peak is observed at a contact angle of 90?
|
| 14. | A "'wetting transition "'corresponds to a certain change in contact angle.
|
| 15. | The contact angle is determined by the result between adhesive and cohesive forces.
|
| 16. | Even in such a smooth surface a drop will assume contact angle hysteresis.
|
| 17. | When the contact angle is less than 180? the thickness is given by:
|
| 18. | This approach assumes that the lower contact angle corresponds to a higher surface energy.
|
| 19. | Contact angle hysteresis is a phenomenon that characterizes surface heterogeneity.
|
| 20. | Thus, the contact angle provides an inverse measure of wettability.
|
