Related topics: surface

The physics of coffee rings

For centuries, intellectuals have met at the ring-stained surfaces of coffee shops to pore over the most pressing problems of the day -- but has anyone ever pondered the coffee rings they left behind? What causes the formation ...

Health diagnosis made simpler

Arizona State University researchers have demonstrated a way to dramatically simplify testing patients for infectious diseases and unhealthy protein levels.

Ironing out the causes of wrinkles

As a sign of aging or in a suit, wrinkles are almost never welcome, but two papers in the current issue of Physical Review Letters offer some perspective on what determines their size and shape in soft materials.

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