The exploration of Terahertz (THz) communications (above 100 GHz) is promising for achieving ultra-high data rates and bandwidth in next-generation wireless networks. The combination of large transmitting arrays and smaller wavelength in THz communications introduces new challenges where the near-field range of a transmitter can extend to several meters. A wireless base station or access point may serve multiple near-field and far-field users. This project investigates the impacts of near-field complexities and the interplay between near- and far-field communications. It leverages near-field properties, such as the generation of curved beams for going around the obstruction or reconstructing the beams after interacting with an obstacle, to improve blockage resilience and system performance of THz wireless networks. This project also includes significant efforts to motivate participation in STEM, at all educational levels. This project aims to explore near-field propagation properties of wireless signals to enable blockage-resilient high-speed multi-user wireless communications above 100 GHz. The proposed research comprises four thrusts, (1) understanding and modeling the fundamental limits of near-field wavefront shaping for realizing agile and high-speed communications in the scenarios with link blockage, (2) investigating the design and fabrication of a new programmable array architecture that can generate near-field wavefronts and dynamically adapt them according to the