Abstract Multi-stable structures attract great interest because they possess special energy landscapes with domains of attraction around the stable states. Consequently. multi-stable structures have the potential to achieve prescribed reconfiguration with only a few lightweight actuators (such as shape-memory alloy springs). and do not need constant actuation to be locked at a stable ... https://www.bekindtopets.com/limited-stock-Original-U-S-Vietnam-War-Era-Operation-Igloo-White-Seismic-Sensor-Inert-Rocket-great-price/