Transfer of particulate material

This invention describes a method for 3D printing objects by first creating a precise pattern of powder material on a curved surface. This powder is then transferred directly from the curved surface to a second surface, passing through an open air gap without any physical obstacles. This allows for the creation of three-dimensional objects with potentially complex geometries.

Why it matters: Since 2018, advancements in real-time sensing and AI-driven control systems have significantly improved the precision of powder deposition and non-contact material transfer, making the "obstacle-free atmospheric gap" more achievable. The focus on curved surfaces also aligns with growing demand for conformal electronics and complex geometries.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedCharged particle optics, precision powder handling, curved surface

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