This invention presents a new linear actuator model inspired by the ballistic tongue mechanisms found in chameleons and salamanders. It generates rapid linear motion through compression and sliding rather than traditional pulling or spring systems. The design achieves high acceleration and speed using soft, low-stiffness materials, eliminating the need for rigid springs or high-energy storage components. This approach enables compact, energy-efficient devices capable of fast motion within confined spaces at a wide range of size scales, opening possibilities for robotics, medical tools, and soft-matter engineering.
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.