In this roadmap article, we have focused on the most recent advances in terahertz (THz)
imaging with particular attention paid to the optimization and miniaturization of the THz …

Terahertz (THz)-band communications are a key enabler for future-generation wireless
communication systems that promise to integrate a wide range of data-demanding …

A compact source is important for various applications utilizing terahertz (THz) waves. In this
paper, the recent progress in resonant-tunneling diode (RTD) THz oscillators, which are …

A large increase in oscillation frequency was achieved in resonant-tunneling-diode (RTD)
terahertz oscillators by reducing the conduction loss. An n+-InGaAs layer under the air …

The chemical stability of graphene and other free-standing two-dimensional crystals means
that they can be stacked in different combinations to produce a new class of functional …

Terahertz waves, which lie in the frequency range of 0.1-10 THz, have long been
investigated in a few limited fields, such as astronomy, because of a lack of devices for their …

We proposed and fabricated large-scale arrays of resonant tunneling diode (RTD)
oscillators for high-output-power terahertz (THz) sources. The array element is composed of …

III-nitride nanostructures have recently emerged as promising materials for new
intersubband (ISB) devices in a wide variety of applications. These ISB technologies rely on …

Semiconductor devices that rely on quantum tunnelling could be of use in logic, memory and
radiofrequency applications. Tunnel devices that exhibit negative differential resistance …

Resonant tunneling diode (RTD) technology is emerging as one of the promising
semiconductor-based solid-state technologies for terahertz (THz) wireless communications …