Evaporating Falling Drop

Contact line deposits in an evaporating drop

Solids dispersed in a drying drop will migrate to the edge of the drop and form a solid ring. This phenomenon produces ringlike stains and occurs for a wide range of surfaces, solvents, and solutes. Here we show that the migration is caused by an outward flow within the drop that is driven by the loss of solvent by evaporation and geometrical constraint that the drop maintain an equilibrium dro...

The Falling Drop Method for Determining Specific

Recognizing the increasing importance attached to water exchange in the body for the study of many clinical and physiological conditions we (1) described in 1924 a new and convenient method of determining specific gravity. Obvious advantages attach to densimetry performed with 1 drop of body fluid, in less than a minute’s time. While these ends were attained by the method as first described it ...

Analytical solution for inviscid flow inside an evaporating sessile drop.

Inviscid flow within an evaporating sessile drop is analyzed. The field equation E;{2}psi=0 is solved for the stream function. The exact analytical solution is obtained for arbitrary contact angle and distribution of evaporative flux along the free boundary. Specific results and computations are presented for evaporation corresponding to both uniform flux and purely diffusive gas phase transpor...

Homogenization of Drop Stain by Radial Electroosmotic Flow in an Evaporating Drop

The Falling Drop Method for Determining Specific Gravity .*

Recognizing the increasing importance attached to water exchange in the body for the study of many clinical and physiological conditions we (1) described in 1924 a new and convenient method of determining specific gravity. Obvious advantages attach to densimetry performed with 1 drop of body fluid, in less than a minute’s time. While these ends were attained by the method as first described it ...