Advantages
- Spring-free, gas-free, electromagnet-free
- Soft-material compatible — silicone-based actuators + engineering plastics, suitable for soft-robotics integration
- High performance envelope — biological systems achieve 30–590 G acceleration and projection speeds of 2–5.5 m/s
- Architecturally scalable — same design principles work for miniature medical devices to large-scale robotic and space applications
Summary
Mechanical actuators that deliver rapid, high-acceleration linear motion today rely on rigid mechanisms — helical compression springs, pressurized gas, pyrotechnic charges, or electromagnetic drives. These mechanisms constrain miniaturization, complicate scaling, and limit material flexibility.
USF inventors have engineered a soft-material linear actuator architecture inspired by chameleon and salamander tongue projection — biological mechanisms that achieve acceleration of 30 to 590 G across a 30-fold body-size range. The architecture stores elastic energy in low-stiffness soft materials and releases it via the compression of a lubricated tapered rod within a compressor tube. This enables rapid linear release without springs, gas charges, or electromagnets — and the architecture scales from miniature (medical) to large-scale (space, robotics) applications using soft or flexible materials.
This figure has Schematic of the bio-inspired linear actuator showing how compression and sliding of soft materials generate rapid, high-acceleration motion for ballistic projection applications.
Desired Partnerships
- License
- Sponsored Research
- Co-Development