particularly ring-like, deposit patterns are formed when colloids are left during evaporation on a flat surface from colloidal suspension droplets, as well known as the coffee-ring effect. Evaporation of sessile droplets with a spherical cap shape is well studied theoretically, experimentally, and numerically. For instance, evaporation rates for spherical water droplets are known to depend on contact radius, contact angle, relative humidity, saturated vapor concentration, and vapor diffusivity.
A droplet is an important element for inkjet printing, painting, and coating technologies that utilize a small volume of colloidal drops.
Evaporation of a droplet is an essential physical process in controlling final deposit patterns of colloids from suspensions, where colloids are uniformly dispersed into a liquid.
particularly ring-like, deposit patterns are formed when colloids are left during evaporation on a flat surface from colloidal suspension droplets, as well known as the coffee-ring effect. Evaporation of sessile droplets with a spherical cap shape is well studied theoretically, experimentally, and numerically. For instance, evaporation rates for spherical water droplets are known to depend on contact radius, contact angle, relative humidity, saturated vapor concentration, and vapor diffusivity.