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 ...

For practical applications, two-dimensional materials such as graphene must at some point connect with the ordinary world of 3D materials. Researchers have come up with a way of imaging what goes on ...

A 2D mammogram is the conventional way to look at breast tissue. The machine takes 2 x-ray pictures of each breast. One is ...

Researchers have been touting the virtues of 3D cell culture over traditional 2D culture for years. But what are the differences between cells grown in 2D and 3D, and how do these differences impact ...