Smooth motion of robots like human or animal will be happen soon. Scientist at NanoTech Institute, University of Texas at Dallas have developed Carbon Nanotube Aerogel Muscles, which stronger than steel, and the best is its superelastic. As reported on science, NanoTech Institute they have demonstrated a fundamentally new type of artificial muscle, consisting almost exclusively of carbon nanotubes, which can operate at extreme low temperatures that would cause other artificial muscles systems to freeze and at very high temperatures that would cause other muscle systems to decompose.
UPDATE: Here are videos that demonstate this new muscle.
Muscle is the most important in robots development. Moving object will become more attractive with elastic muscle inside. And with muscle, robots can just act like as and can do task like we did. It’s really great new materials invent. Hmm…I think (r)evolution is begin today. After made supermodel robot and worry about robot army, like or not robots will have important roles in futures, not next 100 years, but I think just a couples years from now.