Three-dimensional (3D) metal–plastic composite structures have widespread potential applicability in smart electronics, micro/nanosensing, internet-of-things (IoT) devices, and even quantum computing. Devices constructed using these structures have a higher degree of design freedom, and can have more complex features, complex geometry, and increasingly smaller sizes. But current methods to fabricate such parts are expensive and complicated.
source https://www.lifetechnology.com/blogs/life-technology-technology-news/novel-3d-printing-method-to-fabricate-complex-metal-plastic-composite-structures