1) The current invention pertains to an innovative method of multi-material additive manufacturing (AM) for the fabrication of closed-cell structures infused with energy-activated materials. These materials react to external energy stimuli, such as microwave and ultraviolet (UV) radiation, facilitating controlled transformations, including expansion, bonding, or phase alterations.
2) The invention presents a fabrication method in which closed-cell structures are initially 3D printed via an additive manufacturing process, subsequently filled with energy-sensitive material, and finally activated through targeted energy exposure, such as microwaves or ultraviolet light. This method expands the use of additive manufacturing for functional materials and high-performance structures, improving material characteristics and structural integrity.
3) This invention clearly defined the energy sensitive and non-energy activated materials. The 3D printed structure does not interact with external energy source where only the filled material reacts to energy input facilitating the controlled material transformation.
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