News tagged with flat surfaces

Paramecia need Newton for navigation

While single-celled paramecia have the ability to respond to certain external stimuli, they appear not to use that sensory system for simple navigation, new research finds. The work suggests that the ability ...

Nov 18, 2014
5 / 5 (7) 0

An air cushion for falling droplets

Falling droplets bounce as many as fifteen times before they come to rest on a flat surface. In the past, it was believed that this phenomenon is limited to water drops on superhydrophobic surfaces.

Nov 11, 2014
4.4 / 5 (12) 10

Cells eat themselves into shape

The process cells use to 'swallow' up nutrients, hormones and other signals from their environment – called endocytosis – can play a crucial role in shaping the cells themselves, scientists at the European ...

Aug 09, 2013
5 / 5 (9) 1 | with audio podcast

Explained: Hydrophobic and hydrophilic

Sometimes water spreads evenly when it hits a surface; sometimes it beads into tiny droplets. While people have noticed these differences since ancient times, a better understanding of these properties, and ...

Jul 16, 2013
4.5 / 5 (4) 0

Water droplets prefer the soft touch

(Phys.org) —Researchers have found a way to drive water droplets along a flat surface without applying heat, chemicals, electricity, or other forces: All that's required is varying the stiffness of the ...

Jun 25, 2013
4 / 5 (4) 0 | with audio podcast