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Home/Research Monitor
Issue 01 · September 2026

Terahertz Research Monitor

Every terahertz paper published in the window, read and indexed by hand. Search it, filter it, and follow the ten we think are worth building on.

203
papers indexed
141
free to read
99
direct PDF links
94
experimental
38
countries
The month at a glance
Papers by theme

Click a bar to filter the catalogue.

First author’s country

Top 12 of 38.

Ten worth building on

Ranked by how easily you could act on them: method fully specified, hardware you probably have, a clear next experiment. Three of the ten are shown here.

1

Motion-tracking THz-TDS with time-programmable frequency combs

Japan · Experiment · Free · arXiv 2609.06024

Motion-Tracking Terahertz Time-Domain Spectroscopy Enabled by Time-Programmable Frequency Combs for Moving-Object Sensing

The measurement window is locked electronically onto a moving THz waveform at up to 308 Hz, so the sample no longer has to sit still. Everything needed is in a free preprint, and the hardware is a dual-comb THz-TDS — no new components, the novelty is in the phase-lock set-point control.

Next point it at a vibrating or conveyor-borne part and see whether thickness or moisture readings survive real production motion. A cheaper half-step is closed-loop feedback on a conventional delay stage.

Read the paper ↗PDF ↗
2

Physics-informed ML for THz-TDS quantification (coal–gangue)

China · Experiment · Free · Materials

Quantitative Prediction of Coal-Gangue Content Using THz-TDS and Physics-Informed Machine Learning

An effective-medium-theory-constrained neural network beats random forest, SVR, GPR and a plain ANN on the same data (R² 0.81). The whole feature set — time and frequency domain, refractive index, absorption, permittivity — and the cross-validation protocol are spelled out, and the paper is free with a PDF.

Next re-run the same pipeline on whatever mixture you already measure — polymers, powders, minerals. The transferable part is embedding a mixing law as a physics constraint, which is what keeps it honest on small datasets.

Read the paper ↗PDF ↗
3

Resonance-anchored surrogate for absorber design across topologies

China · Theory / simulation · Free · Nanomaterials

Resonance-Anchored Residual Surrogate for Spectral Prediction and Inverse Design of THz Metamaterial Absorbers

Most ML metasurface models must be retrained whenever the geometry family changes; this one predicts resonance frequency and the local spectrum around it across several topologies, and does forward prediction and inverse design in one model. Free, with enough architecture detail to reimplement.

Next train it on your own simulation library so design sweeps stop costing full-wave runs. Even a partial replication tells you whether the resonance-anchored representation generalises to your geometries.

Read the paper ↗

The full issue is for registered readers

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