3D printed products replicate efficiency of mammalian movement
Animal physiology has inspired the development of a 3D printing method to produce shape-shifting liquid metal robotics with musculoskeletal qualities.
Dr Ruirui Qiao and her research team at the University of Queensland’s Australian Institute for Bioengineering and Nanotechnology (AIBN) have used the technique to make medical rehabilitation components and devices that are claimed to have superior strength and flexibility.
“We set out to mimic the locomotion, flexibility and control of mammalian movement,” Dr Qiao said in a statement.
“By combining ‘soft’ spherical liquid metal nanoparticles and ‘rigid’ rod-like gallium-based nanorods in the 3D printing process, we have been able to replicate the interconnected network of bone and muscle that gives animals an advantage in efficiency and strength.
“This tuneable gallium-polymer composite can be used for next generation medical rehabilitation products like high-precision grippers for prosthetic limbs.”
Similar to Dr Qiao’s previous work with liquid metal, the new creations can take and maintain different shapes and functions when exposed to stimuli such as heat and infrared light.
Dr Qiao said many manufacturers draw inspiration from the locomotion mechanisms of soft-bodied creatures in nature.
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