Fig. 8: The historical data for the upper node’s x-coordinate across various surfaces (wood in red, coir vinyl in orange, and sandpaper in blue) and slope angles are presented as follows.
From: Modular shape-changing tensegrity-blocks enable self-assembling robotic structures

From left to right, slope angles are θ = 0°, θ = 5°, θ = 10°, and θ = 15°, respectively.