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Unmixing ATR-{\mu}FTIR spectroscopic images of cross-sections of historical oil paintings
arXiv:2603.06673v2 Announce Type: replace Abstract: Spectroscopic imaging (SI) has become central to heritage science because it enables non-invasive, spatially resolved characterisation of materials in artefacts. In particular, attenuated total reflection Fourier transform infrared microscopy (ATR-$\mu$FTIR) is widely used to analyse painting cross-sections, where a spectrum is recorded at each pixel to form a hyperspectral image (HSI).
SOD1 Catalyses Thiol Oxidation to Thiosulfinates
Cu/Zn superoxide dismutase (SOD1) is canonically regarded as a superoxide scavenging antioxidant yet is paradoxically associated with multiple diseases. Here, we show that SOD1 catalyzes thiol oxidation to thiosulfinates (RS(O)SR), revealing a previously unrecognized copper mediated oxidant forming reaction in biology. Steady state kinetics demonstrate robust, O2 dependent thiol consumption, and ATR FTIR spectra of the SOD1-cysteine reaction display S--O bands ({approx}1042/1169 cm-1)...
TeX-1500: A Paired Real-World LWIR Hyperspectral Dataset and Benchmark for Temperature-Emissivity-Texture Decomposition
arXiv:2606.03806v1 Announce Type: new Abstract: Temperature-emissivity-texture (TeX) decomposition seeks to recover object heat state, material spectral response, and visible-like geometric texture from long-wave infrared hyperspectral imaging (LWIR HSI). Existing TeX pipelines are mainly scene-specific inverse solvers, and the lack of paired LWIR HSI-TeX supervision has limited learning-based decomposition. To address this gap, we introduce TeX-1500, a large-scale paired LWIR HSI-TeX...
Britain's oldest cave art may have been rediscovered in Bacon Hole cave
June 2, 2026 report Britain's oldest cave art may have been rediscovered in Bacon Hole cave Paul Arnold Author Gaby Clark Scientific Editor Robert Egan Associate Editor The oldest cave art in Britain may have been discovered, or more likely rediscovered, in a cave on the Gower Peninsula in South Wales, possibly dating back around 17,000 years. The red stripe markings on the walls of a cave called Bacon Hole were first spotted in 1912. They were hailed by their finders, Professor William...
High-speed mid-infrared single-photon upconversion spectrometer
arXiv:2605.30701v1 Announce Type: new Abstract: Sensitive and fast mid-infrared (MIR) spectroscopy is highly attractive in a variety of applications including astronomical observation, pharmaceutical synthesis, and environmental monitoring. However, the performance of conventional MIR spectrometers has long been hindered by the limited sensitivity of narrow-bandgap detectors and/or the deficient brightness of broadband light sources. Here, we devise and implement an ultra-sensitive and...