摘要： This work introduces a robotic metamaterial that consists of meso-sized compliant cells that interact with each other using embedded actuators and sensors to achieve desired system-level properties via active closed-loop control. Each cell possesses a microprocessor at its core that can receive uploaded control instructions, which dictate how the cell responds to the loads and relative displacements of neighboring cells. Using this swarm control approach, desired bulk properties emerge from the metamaterial in response to external loads regardless of how the cells are arranged within the material’s lattice. Such materials can achieve unprecedented properties and combinations of properties that are not possible to achieve using natural homogenous materials, composites, or even passive architected materials. Additionally, these properties can be adjusted on demand as rapidly as new instructions can be uploaded to the microprocessors within their lattices. Although, in theory, such materials could be used to satisfy the property requirements of almost any application, they are difficult to fabricate, particularly with cells small enough to be considered a material rather than a collection of macro-sized robots. Here we introduce the first three-dimensional property-controlled robotic metamaterial ever fabricated. Its cells are 5 mm in size and successfully achieve properties via closed-loop control.