"We are achieving a shading system that opens and closes autonomously ... this isn't the first time that scientists have harnessed "pine cone power" for use in human technology.

Think of a building shading system that intelligently adapts ... the team engineered biobased cellulose fibers and 4D-printed them into a pine cone-inspired bilayer structure.

Take the bottom part of the circle and roll it into a cone. Image caption, STEP 2: Unroll it and fold the shape in half vertically. Use a ruler to draw along the fold, then shade half of the shape ...

"We are achieving a shading system that opens and closes autonomously ... a bilayered structure inspired by the scales of the pine cone. Material systems produced by this additive manufacturing ...