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期号 01 · September 2026

太赫兹研究观察

该时间窗内发表的每一篇太赫兹论文，均由人工阅读并编入索引。可检索、可筛选，并可跟进我们认为值得深入的十篇。

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第一作者国别

前 12 名，共计 38.

每日论文数

值得跟进的十篇

按上手难易程度排序：方法完整给出，所需硬件多半已有，下一步实验明确。

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.

下一步 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.

阅读论文 ↗

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.

下一步 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.

阅读论文 ↗

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.

下一步 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.

阅读论文 ↗

Self-referenced, multi-mode THz absorber sensing

Iran · Theory / simulation · Free · Discover Applied Sciences

Gap-engineered four-spiral terahertz metamaterial absorber for ratio-based self-referenced refractive-index sensing

Four spiral resonators with deliberately different gaps give four separated modes at 1.15–3.08 THz, used as reference, primary sensor, secondary sensor and monitor. Sensitivity 180 GHz/RIU. It is simulation-only on a PTFE/Au stack — no exotic materials — and diamond open access, so the full geometry is yours.

下一步 fabricate and test it, but the real prize is the ratio-based readout: referencing one mode against another cancels source drift and alignment error, which is the usual reason lab sensitivity does not survive outside the lab.

阅读论文 ↗

SI-traceable field calibration of a commercial photomixer system

USA · Experiment · Free · arXiv 2609.11887

SI-Traceable Calibration and Performance Benchmarking of a Terahertz Photomixer Transmitter-Receiver System Using a Rydberg Atomic Sensor

A Rydberg atomic vapour sensor calibrates a commercial photomixer transmitter/receiver near 204 GHz via the Autler–Townes effect, tying field strength to atomic constants rather than a reference detector. Free preprint, and notably it benchmarks an off-the-shelf system rather than a bespoke one.

下一步 worth a conversation with a metrology institute — an SI-traceable field number on a datasheet is a claim competitors cannot easily match, and the method applies directly to photomixer sources you already sell or use.

阅读论文 ↗

Review: THz-TDS coating-thickness measurement

China · Review · Free · J. Physics D: Applied Physics

Advances in coating thickness measurement using terahertz time-domain spectroscopy

Not a new result, but the most useful map in the batch: time-of-flight, model-based inversion and machine-learning methods compared, each with its valid range, assumptions, failure modes and representative accuracy. Free PDF from IOP.

下一步 use it as a gap list. The authors are explicit about where each method breaks down on multi-layer ultra-thin stacks — those breakdown points are where a differentiated product or a follow-up paper sits.

阅读论文 ↗

Boson-peak time-of-flight fingerprinting of glasses

Japan · Experiment · Free · Materials

Time-of-Flight Detection of Boson Peak in Volcanic Glass

A plain THz-TDS time-of-flight measurement locates the boson peak in volcanic obsidian at 1.07 THz versus 1.2 THz for silica, and links the shift and the IR coupling coefficient to metal-ion modification of the SiO₄ network. No special equipment, free paper.

下一步 run a sample series of your own glasses. If peak position tracks composition the way this suggests, you have a cheap, non-destructive compositional fingerprint — an easy paper and a plausible QC niche.

阅读论文 ↗

Deconvolution beating the THz-TDS thin-layer resolution limit

South Korea · Theory + experiment · Subscription · Sensors and Actuators A: Physical

Optimized regularization and deconvolution technique for overcoming resolution limits in THz-TDS applied to ceramic-coated battery separators

Optimised regularization plus deconvolution resolves ceramic coatings on battery separators below the usual pulse-width limit. It is pure post-processing, so it can be tested on waveforms you have already recorded — no hardware change at all. The catch: subscription-only.

下一步 reprocess an archived dataset where layers were too thin to separate. If the gain reproduces, it upgrades every thin-layer measurement retroactively, and battery separators are a growing inspection market.

阅读论文 ↗

Sub-ppm gas sensing with a chaotic multimode laser diode

Japan · Experiment · Subscription · ACS Applied Optical Materials

Sub-ppm Ammonia Sensing via Terahertz Phase Modulation in Porous Glass with a Chaotic Laser Diode

Ammonia down to 0.2 ppm using THz phase modulation, with porous glass in the cell to increase molecule–surface interaction and a cheap chaotic multimode laser diode instead of a femtosecond source. Response follows a Langmuir adsorption model. Subscription, but the hardware bill is the lowest in this list.

下一步 swap the analyte and the porous host. The concept — cheap source plus adsorption-enhanced cell — is the most plausible route in this batch to a genuinely low-cost THz gas instrument.

阅读论文 ↗

Passive wavelength-addressed 2D beam steering (diffractive network)

USA · Theory / simulation · Free · Advanced Optical Materials

Wavelength-Multiplexed 2D Beam Steering via a Passive Diffractive Network

Cascaded diffractive layers, jointly designed by deep learning, map 625 wavelength channels onto a 25×25 grid of output angles with no moving parts and no phase shifters. Demonstrated at 400–750 nm by Ozcan's group — whose diffractive layers are normally 3D-printed at THz frequencies. Free PDF.

下一步 the obvious build is the THz version: scale the layer design, print it, and use frequency as the steering key. That sidesteps the tunable-material problem that makes most THz beam steering slow or lossy.

阅读论文 ↗

倒置排行榜

Research Monitor Scoring Standard v1.0 — prestige rankings reward what money buys; this one scores the opposite, and prints its formula.

+3 free from day one · +3→0 as the author list grows from one to twelve-plus · +3→0 as the venue gets more cited · +2 for avoiding the month’s fashionable keywords · +1 if the first author is outside the five dominant countries · −0.5 per promotional adjective. Maximum 12.

Theory and simulation

11.5UWB reflective linear-to-circular polarization converter2 authors, Iran, free the day it was posted · PDF
11Interband absorption in semiconductor superlattices under crossed fields4 authors, Azerbaijan, diamond OA, journal almost nobody outside Russia reads · PDF
10.5Theoretical studies on electron-beam-driven compact THz sources1 author, India, posted openly with no journal at all · doi:10.13140/rg.2.2.31616.60166
10.5Interfacial orbital torques excite nanoscale terahertz magnons3 authors, Germany, preprint · PDF
10.5Safety-gated multi-band 6G V2X for cooperative autonomous vehicles1 author, Iraq, hybrid OA · doi:10.61856/f3dbqm84
10Triple-Debye modelling and FDTD for THz breast-cancer reflection2 authors, Iran, preprint · PDF
10Beam squint and bandwidth limits in RIS-assisted THz links4 authors, China, preprint · PDF
10Asymmetric waveguide photodiode with low optical back-reflection4 authors, China, preprint · PDF

Experiment and instruments

11Polarization-resolved single-pixel THz imaging (PhD thesis)1 author, Canada, institutional repository · doi:10.14288/1.0455838
11Tera-EXPOSE: building a THz-pump / photoemission-probe station (project report)1 author, Germany, written in German, free · doi:10.34657/40975
11SiC D-band waveguide components for low loss at high power (PhD thesis)1 author, USA, university repository · doi:10.7274/33293103.v1
10.5Cryogenic platform for RF circuits and superconducting sensors (PhD thesis)1 author, Germany, repository · doi:10.24355/dbbs.084-202608191059-0
10THz optoelectronic properties of micro- and nano-grain diamond films4 authors, China, diamond OA, published in Chinese · PDF
10Motion-tracking THz-TDS with time-programmable frequency combs4 authors, Japan, preprint · PDF
10Super-resolution THz imaging with a freeform Bessel lens and radiator array8 authors, Hong Kong, preprint · PDF
9.5SI-traceable calibration of a commercial THz photomixer system4 authors, USA, preprint · PDF

What the index punishes

0.5Broadband MnSb₂Te₄ photodetector from visible to terahertzACS Appl. Mater. Interfaces · 14 authors · paywalled · doi:10.1021/acsami.6c07068
1.5High-entropy strategy for absorbers from GHz to THzActa Physico-Chimica Sinica · 10 authors · paywalled · doi:10.1016/j.actphy.2026.100434
2Ultrafast pathways of photo-induced magnetic phase transition in FeRhSmall · 9 authors · paywalled · doi:10.1002/smll.75771
2.5Enhanced THz emission via the circular photogalvanic effectPhysical Review Letters · 23 authors · paywalled · doi:10.1103/zlmj-gpj9
3Dual-functional THz manipulation in EuBa₂Cu₃O₇ superconductorsAdvanced Science · 11 authors · free but glamorous · doi:10.1002/advs.77616
3.5Negative refraction of terahertz phononsPhysical Review Letters · 8 authors · paywalled · doi:10.1103/n9zv-9kc5

Read honestly, the index measures accessibility and independence, not quality: a 23-author Physical Review Letters paper may need 23 people and a synchrotron, and a lone thesis is not automatically right. Publishing the weights is the point — the usual rankings hide theirs.

在大科学装置上完成

LCLS X-ray free-electron laser, SLAC (XPP instrument)

Slow thermalization and long-lived coherence across acoustic phonon branches in BAs · PDF

Optical-pump / hard-X-ray-probe scattering at 120 Hz with a Si(111) monochromator — a beamtime experiment, stated in the methods.

Synergetic Extreme Condition User Facility (SECUF), Beijing

Revealing hidden inversion symmetry breaking in ZrTe₅ via phonon-assisted heterodyne amplification · PDF

Acknowledgement names SECUF explicitly: “this work was carried out at the Synergetic Extreme Condition User Facility”.

HFML-FELIX, Radboud University Nijmegen

Magnetization and spin dynamics across field-induced transitions in Cu₂(OH)₃Br · PDF

High-field magnet laboratory combined with the FELIX free-electron laser; a co-author is based at the facility.

TELBE, accelerator-based THz source at HZDR Dresden

Tera-EXPOSE: a THz-pump / photoemission-probe station (project report) · doi:10.34657/40975

The whole project is the construction of a permanent user station at what the report calls a worldwide-unique accelerator-based THz source.

Submillimetre observatories (JCMT, SMA and partners)

First VLBI fringe detection at 690 GHz · PDF

Telescope time on a multi-site array — the astronomy equivalent of beamtime, and the highest-frequency VLBI result so far.

Balloon-borne observatory instrumentation (Terahertz Intensity Mapper)

Effects of magnetic fields on kinetic inductance detector arrays · doi:10.1117/12.3104160

Not beamtime itself, but detector development for a shared facility instrument — included because it competes for a floor, not a census.

发表论文的企业

TOPTICA Photonics SE + Mahlo GmbH · Germany

In-line THz-TDS quality control of PET and TPU-PET-TPU foils — A THz instrument maker and a web-gauging manufacturer publishing a production-line application together. · doi:10.1080/25740881.2026.2728967

AMO GmbH · Germany

Graphene THz rectennas for harvesting ambient RF energy — First author is at the company; fabrication with RWTH Aachen. · PDF

Applied Research & Photonics, Inc. · USA

Real-time tablet dissolution and API concentration by T-ray transmission — Company-led, with Rutgers. · doi:10.1208/s12249-026-03515-2

Silicon Austria Labs GmbH · Austria

THz photoresponse of quantum point contacts — With TU Wien and Novosibirsk. · PDF

Nippo Precision Co., Ltd. · Japan

Sub-ppm ammonia sensing with a chaotic laser diode — With Osaka University; the cheapest hardware route in the month. · doi:10.1021/acsaom.6c00488

Polymer Competence Center Leoben GmbH · Austria

Glassy-polymer viscoelasticity across twenty frequency decades — Industrial research centre. · PDF

AVIC Huadong Photoelectric Co., Ltd. · China

Coal–gangue quantification by THz-TDS and physics-informed ML — Aviation-industry subsidiary. · PDF

State Grid Gansu Electric Power Research Institute · China

Moisture imaging in transformer insulating paperboard — Utility research arm — asset inspection. · doi:10.1117/1.oe.65.9.094101

Chongqing Gangli Environmental Protection Co., Ltd. · China

Weyl-semimetal cavity for refractive-index sensing · doi:10.3390/photonics13090835

East China Institute of Optoelectronic Integrated Devices · China

Graphene plasmon-induced-transparency device — CETC-affiliated institute. · PDF

Qi S.r.l. · Italy

Nanomaterials for diagnostics and drug delivery (review) · PDF

解读本月的另外八种方式

同一批论文，按不同维度切分，提示可从何处入手。

Records of the month — numbers to beat

The specific figures a follow-up has to exceed.

11 THz of continuous absorption bandwidth, from one VO₂ absorber · PDF
First interferometric fringes at 690 GHz — VLBI pushed into the submillimetre · PDF
0.2 ppm ammonia, with a laser diode instead of a femtosecond source · doi:10.1021/acsaom.6c00488
One detector covering 5.5 µm to 6 mm — three orders of magnitude in wavelength · PDF
308 Hz waveform tracking, no delay stage sweeping · PDF
Eight Boolean logic gates on a single passive metasurface · PDF
625 wavelength channels mapped onto a 25×25 grid of output angles · PDF
Twenty decades of frequency in one viscoelastic model · PDF

Boldest claims — someone should check these

High-impact assertions resting on a single paper. Replication here is cheap publicity.

THz waves change how psychedelics bind serotonin receptors · PDF
THz spectra predict glioma recurrence and survival at patient level · PDF
Near-unity chiral purity in generated THz radiation · PDF
Negative refraction — of phonons, not photons · doi:10.1103/n9zv-9kc5
Inverse orbital Hall effect seen in GaN, no spin-orbit coupling needed · PDF
ZrTe₅ is not centrosymmetric after all · PDF

Designed, never built — waiting for someone with a cleanroom

Numerical studies with complete geometries published. First group to fabricate one owns the experimental paper.

Four-spiral self-referenced absorber, 180 GHz/RIU · PDF
MoS₂ + VO₂ polarization-insensitive broadband absorber · PDF
Quad-band graphene nanostrip plasmonic sensor · PDF
Four-band nested circle-square-circle graphene absorber · doi:10.1016/j.physb.2026.419328
SNG multiband biosensor for early non-melanoma skin cancer · PDF
Metamaterial biosensor aimed at tuberculosis detection · doi:10.1007/s12596-026-03287-9

Where everyone is — and where nobody is

Half the month is one topic. The singletons are the white space.

Crowded: 57 metasurface papers — graphene appears in 28, VO₂ in 13, absorbers in 16
Crowded: 6G / communications, 27 papers, mostly channel models and antennas
Alone: cryogenics for space-borne THz instruments — one paper all month · doi:10.1016/j.cryogenics.2026.104474
Alone: THz energy harvesting with graphene rectennas · PDF
Alone: heritage science / manuscript conservation · PDF
Alone: SI-traceable field metrology — the whole field's calibration rests on this one · PDF

THz meets the unexpected

Application papers from outside the usual physics-and-comms axis. Cheap sample access, little competition.

Palm-leaf manuscripts, read without touching them · PDF
Volcanic obsidian, fingerprinted by its boson peak · doi:10.3390/ma19183875
Olive oil, checked for refined-oil adulteration · doi:10.1016/j.foodchem.2026.151045
Stored wheat, screened for mould before it is visible · doi:10.1016/j.jfca.2026.109486
Cold-chain packaging, x-rayed for hidden ice layers · doi:10.1007/s11947-026-04585-7
Coal and gangue, sorted by machine learning · PDF
Transformer oil and insulating paperboard, watched for moisture · doi:10.1364/ao.606025
Tablets, watched dissolving in real time · doi:10.1208/s12249-026-03515-2

No new hardware — run these on data you already have

Pure method and post-processing papers. Zero capital cost, fastest path to a result.

Regularized deconvolution past the thin-layer resolution limit · doi:10.1016/j.sna.2026.118491
Effective-medium-constrained neural network for quantification · PDF
Surrogate model replacing full-wave sweeps in absorber design · doi:10.3390/nano16171107
Quantification of a weak absorber with explicit uncertainty · doi:10.1016/j.vibspec.2026.103950
Chemometrics pipeline for liquid authenticity testing · doi:10.1016/j.foodchem.2026.151045
Hierarchical ML classification of label-free THz spectra · PDF

Five new PhDs entered the field this month

Theses defended in September — a hiring and collaboration radar, and each one is a free 100-page review of its niche.

Schottky-diode submillimetre receiver modules — University of Virginia · doi:10.18130/mr44-8d02
Cryogenic platform for RF circuits and superconducting THz sensors — TU Braunschweig · doi:10.24355/dbbs.084-202608191059-0
Nanomaterial-enhanced metasurfaces for cancer-antigen detection — University of Glasgow · doi:10.5525/gla.thesis.86211
Polarization-resolved single-pixel THz imaging — University of British Columbia · doi:10.14288/1.0455838
SiC D-band waveguide components for low loss at high power — University of Notre Dame · doi:10.7274/33293103.v1

Where THz work gets read for free — and where it does not

If reach matters as much as venue prestige, this is the month's map.

Open by default: Nature Communications (4 free), Scientific Reports, Nanomaterials, Materials, Physica Scripta (3 each)
Preprint-first: 9 papers appeared on Research Square, 32 on arXiv, all free the day they landed
Mostly paywalled: Journal of Applied Physics and Physical Review Letters (3 subscription each), Optics Letters, Physical Review B, Plasmonics
Overall: 141 of 203 free to read, 99 with a direct PDF link in this document

完整目录

203 / 203 篇论文

编制于 2026-09-16. 书目数据来自 OpenAlex（CC0）和 arXiv。