Authors: George Rajna
Topological defects in the structure of materials known as active nematics can act as rods that mix the fluids – much like one might mix colours in white paint.  When a container of silicone oil or other similar liquid is vertically shaken at a regular frequency, 1-millimeter-sized droplets of the same liquid placed on the liquid's surface appear to "walk" across the surface at speeds of about 1 cm/second, propelled by their own waves.  Almost all living organisms from bacteria to humans have gate-like protein complexes in their cell membranes that get rid of unwanted or life-threatening molecules. 
Comments: 64 Pages.
[v1] 2019-08-10 09:00:34
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