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Mahesh

27/09/22 20:48 PM IST

Coffee Ring Effect

In News 
  • Study of Coffee-ring effect when applied to the drying of biologically relevant fluids like blood can help diagnose anaemic and hyperlipidaemic conditions.
About Coffee-ring effect 
  • A "coffee ring" is a pattern left by a puddle of particle-laden liquid after it evaporates.
  • The phenomenon is named for the characteristic ring-like deposit along the perimeter of a spill of coffee.
  • When a droplet dries on a surface, the particles suspended in it usually deposit in a ring-like pattern, leaving a stain or residue, called the coffee-ring.
  • The mechanism behind the formation of these and similar rings is known as the coffee ring effect or in some instances, the coffee stain effect, or simply ring stain.
Significance 
  • This research has applications in agriculture, forensic science and even disease diagnosis.
  • This can help in understanding the drying of biologically relevant fluids like blood can help diagnose anaemic and hyperlipidaemic conditions.
  • One of the long-term goals of the Researchers is to work with simulated [fluids] as well as blood drawn from different individuals with different conditions to come up with early diagnostic strategies.
Source- The Hindu 

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