Deciphering Alloy Composition in Superconducting Single-Layer FeSe_1–xS_x on SrTiO₃(001) Substrates by Machine Learning of STM/S Data

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(18), С. 22644 - 22650

Опубликована: Май 1, 2023

Scanning tunneling microscopy (STM) is a powerful technique for imaging atomic structure and inferring information on local elemental composition, chemical bonding, electronic excitations. However, plain visual analysis of STM images can be challenging such determination in multicomponent alloys, particularly beyond the diluted limit due to disorder inhomogeneity. One viable solution use machine learning analyze data identify hidden patterns correlations. Here, we apply this approach determine Se/S concentration superconducting single-layer FeSe1-xSx alloys epitaxially grown SrTiO3(001) substrates via molecular beam epitaxy. First, K-means clustering method applied defect-related dI/dV spectra taken by current spectroscopy. Then, ratio calculated analyzing remaining based singular value decomposition method. Such provides an efficient reliable alloy composition further reveals correlations nanoscale inhomogeneity superconductivity iron chalcogenide films.

Язык: Английский

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A series of viologen complexes containing thiophene and Br⁻ dual fluorescent chromophores for continuous visual sensing of pH and Hg²⁺

Dalton Transactions, Год журнала: 2024, Номер 53(6), С. 2741 - 2748

Опубликована: Янв. 1, 2024

Complexes 1–3 exhibited excellent pH sensing and Hg 2+ capabilities in both methanol PBS buffer solutions. The interaction between Br − , the thiophene S atoms complexes 2–3, resulted a distinctive dual-signal mode.

Язык: Английский

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An artificial intelligence handheld sensor for direct reading of nickel ion and ethylenediaminetetraacetic acid in food samples using ratiometric fluorescence cellulose paper microfluidic chip

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 279, С. 135083 - 135083

Опубликована: Авг. 30, 2024

Язык: Английский

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Ratiometric fluorescent paper chip for monitoring the freshness of high protein foods

Analytica Chimica Acta, Год журнала: 2024, Номер 1334, С. 343418 - 343418

Опубликована: Ноя. 13, 2024

Язык: Английский

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Portable instrument based on color sensor chip for on-site rapid detection of dissolved sulfides in environmental water samples

Journal of Hazardous Materials, Год журнала: 2023, Номер 460, С. 132440 - 132440

Опубликована: Авг. 29, 2023

Язык: Английский

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