AMI is a spin-off from SRI International, a Menlo Park, Calif., non-profit research and development organization, which originally conceived the technology that AMI calls Electroactive Polymer Artificial Muscle, or EPAM. Electroactive polymers work much like human muscles, expanding and contracting based on variable voltage input levels.
AMI says its EPAM-based actuators are lighter, smaller and less costly than conventional electromagnetic motor-based actuators. They operate silently and offer much higher power densities than traditional actuator technologies, AMI adds.