Such as Transformers, the living robotic beings that have the ability to change their bodies at will, rearranging their parts from a humanoid robotic mode into an alternate form, generally a car, truck or a weapon; scientists have now developed novel 3D nano-porous materials that go through conformational changes and transform into a 2D non-porous structure as a result of an external stimuli, and then can shift to the original 3D nano-porous structure when the stimuli is reversed.