Theoretical and experimental studies of metallic grids absorption: Application to the design of a bolometer

The study delivers a comprehensive, validated framework for designing metallic grid absorbers with precisely tailored electrical resistivity, enabling the creation of efficient, room‑temperature bolometers and other thermal detectors. By treating structured metal layers as equivalent homogeneous…

Coupling and Propagation of Sommerfeld Waves at 100 and 300 GHz

The study demonstrates that millimetre‑wave guided modes—known as Sommerfeld waves—can be efficiently launched and transported along simple metallic wires at 100 GHz and 300 GHz. By inserting a straightforward differential phase plate in front of the wire, the researchers achieved a theoretical…

Room temperature thermopile THz sensor

Executive Summary The research presented here delivers a novel room‑temperature terahertz (THz) sensor that converts incident electromagnetic power into a measurable electrical signal via a thermopile assembled on a micro‑fabricated silicon dioxide membrane. By using a metallic grid absorber…

Room temperature Si–Ti thermopile THz sensor

The work presents a room‑temperature terahertz (THz) detector based on a thermopile that converts absorbed THz radiation into a measurable voltage. The sensor’s absorber is a metallic grid engineered through a multilayer theoretical model that accounts for diffraction and equivalent resistivity,…

Low-frequency noise effect on terahertz tomography using thermal detectors

Terahertz computed tomography (THz‑CT) offers a powerful, non‑contact imaging modality for security screening, material inspection and biomedical diagnostics, yet its practical deployment has been limited by the low photon energy of terahertz waves and the high noise levels inherent to thermal…

Skeletonization and 3D rendering with real time terahertz tomography

The study demonstrates a fully integrated, real‑time terahertz computed tomography platform that can acquire full‑field images at 25 frames per second, reconstruct a three‑dimensional volume, and automatically process that data to reveal detailed internal morphology within a single minute. By…