Soft Matter Seminar: Capillarity: From Spreading Pressure to Disjoining Pressure to Contact Angle to Energy of Wetting
Wednesday, January 22, 2014 – 3:00pm
That wetting energy is key to understanding capillary phenomena has been known for about one hundred years. The relation of contact angle to wetting energy has been known for about two hundred years. However, contact angles are immeasurable for many interesting materials, e.g. on small particles or on rough surfaces. This talk will show the relation of wetting to contact angle to disjoining pressure to spreading pressure. Spreading pressure is easily measured on small particles or rough surfaces so wetting energies can now be determined for many more interesting systems.
Host: Daniel Blair