An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...
TALLAHASSEE, Fla. — Imagine zooming in on a dried drop of salt solution — each pattern a unique masterpiece, reminiscent of abstract art, yet no larger than the size of a penny. New research by ...
Mumbai: A new study by researchers at the Indian Institute of Technology Bombay (IIT-B) has shown that cracks in dried blood droplets can provide important clues about how the blood was ...