In the past few decades,the Moore's Law has been the re-volutionary force for our integrated circuit(IC)industry.However,the tremendous challenges faced in continuous tran-sistor physical down-scaling and the unprecedented de-mands for computing and storage capabilities require our ur-gent search for strategies and solutions to integrate diverse materials,devices,circuits,and architectures in a 3D vertic-ally stacked manner so that they can orchestrate in the most effective way to provide significantly enhanced functionalit-ies as well as superior speed,energy,bandwidth,form fact,and cost.