Patterns Formation in Drying Drops of Blood
arXiv:1010.2510 · doi:10.1017/S0022112010005070
Abstract
The drying of a drop of human blood exhibits coupled physical mechanisms, such as Marangoni flow, evaporation and wettability. The final stage of a whole blood drop evaporation reveals regular patterns with a good reproducibility for a healthy person. Other experiments on anaemic and hyperlipidemic people were performed, and different patterns were revealed. The flow motion inside the blood drop is observed and analyzed with the use of a digital camera: the influence of the red blood cells (RBCs) motion is revealed at the drop periphery as well as its consequences on the final stage of drying. The mechanisms which lead to the final pattern of the dried blood drops are presented and explained on the basis of fluid mechanics in conjunction with the principles of haematology. The blood drop evaporation process is evidenced to be driven only by Marangoni flow. The same axisymetric pattern formation is observed, and can be forecast for different blood drop diameters. The evaporation mass flux can be predicted with a good agreement, assuming only the knowledge of the colloids mass concentration.
1 page + conference APS 2011 (1 movie for the gallery + 1 movie for ArXiv)
References in corpus (1)
Cited by in corpus (24)
- Patterns Formation in Drying Drops of Blood
- Evaporation-triggered microdroplet nucleation and the four life phases of an evaporating Ouzo drop
- Patterned deposition at moving contact lines
- Gravitational effect in evaporating binary microdroplets
- Evaporation-triggered segregation of sessile binary droplets
- Modelling the formation of structured deposits at receding contact lines of evaporating solutions and suspensions
- Stokes flow near the contact line of an evaporating drop
- Drying of Bio-colloidal Sessile Droplets: Advances, Applications, and Perspectives
- Universal Scaling of Polygonal Desiccation Crack Patterns
- Spacial and temporal dynamics of the volume fraction of the colloidal particles inside a drying sessile drop
- Interfacial flows in sessile evaporating droplets of mineral water
- Dependence of fluid flows in an evaporating sessile droplet on the characteristics of the substrate
- Recent Developments on Colloidal Deposits Obtained by Evaporation of Sessile Droplets on a Solid Surface
- Physiochemical hydrodynamics of the phase segregation in an evaporating binary microdroplet
- Drying-induced stresses in poroelastic drops on rigid substrates
- Detection of self-generated nanowaves on the interface of an evaporating sessile water droplet
- Non-uniformly receding contact line breaks axisymmetric flow patterns
- Insights into the mechanics of pure and bacteria-laden sessile whole blood droplet evaporation
- Crack Formation in the Presence of an Electric Field in Droplets of Laponite Gel
- Spreading and retraction dynamics of sessileevaporating droplets comprising volatile binary mixtures
- Experimental investigations on the nonequilibrium dynamics of pattern formation in fluid and granular systems
- Simple Model of Shape Evolution of Desiccated Colloidal Sessile Drop
- Pattern formation in desiccated sessile colloidal droplets with salt admixture: Short review
- Small universal E-taster for rapid comparative analysis of liquids