Terahertz Communication Networks for 6G and Beyond

Dear Colleagues,

The advent of sixth-generation (6G) wireless systems is driving the exploration of new spectrum bands and device technologies capable of meeting the unprecedented requirements of ultra-high data rates, massive connectivity, and sub-millisecond latency. This Special Issue, “Terahertz Communication Networks for 6G and Beyond”, aims to provide a focused platform for advancing the state of the art in THz communication networks by highlighting recent progress in THz sensors, devices, simulation methodologies, and integrated system design.

THz sensors and devices represent a critical enabler for the realization of 6G networks. Two-dimensional materials such as graphene and related heterostructures are proving to be game-changers in building compact, low-power THz sources, detectors, and modulators. Alongside these, advances in metamaterials, plasmonic devices, and reconfigurable intelligent surfaces are giving us unprecedented control over THz propagation. The result is not just better communication links but the integration of sensing functions—where the same devices that carry bits can also map environments, track movement, and enable fine-grained localization.

High atmospheric attenuation, molecular absorption, and extreme sensitivity to blockage mean that the models we used for sub-6 GHz and mmWave simply do not apply here. Physics-based propagation models, advanced ray-tracing, and hybrid measurement–simulation frameworks are now critical for capturing how these signals behave under real-world conditions. At the same time, system-level simulators are helping us understand how these device- and channel-level constraints ripple up to shape network architecture, protocol design, and user experience in 6G scenarios.

Taken together, progress in THz sensors, devices, materials, and simulation methods is laying the foundation for 6G networks that will do more than just connect people—they will also sense, adapt, and understand their surroundings. With this Special Issue, we aim to capture the state of the art and push the discussion forward on how THz technologies will define communication well beyond 5G.

Dr. Abdullah Eroglu
Guest Editor

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• terahertz communication
• 6G networks
• graphene
• graphane
• 2D materials
• THz devices
• THz sensors
• channel modeling
• simulation methods
• joint communication and sensing