Researchers use a viscoelastic material flowing through a microfluidic chip to sort E. coli bacteria based on their degree of elongation. By using this 'lab-on-a-chip' device, scientists may be able ...

Two-dimensional (2D) shapes are completely flat. They cannot be picked up. A polygon is a 2D shape with straight sides that meet at vertices. Polygons have names that show the number of sides they ...