biostudies-literatureUnknown8(1)Kostal PThis study explores the viscosity behavior of the Ge-Se chalcogenide glass-forming system. Four compositions containing 5, 10, 15, and 20 at. % germanium were examined. Viscosity measurements were performed over a broad range, spanning approximately 13 orders of magnitude, by combining the pressure-assisted melt filling technique with penetration and parallel-plate viscometry. The results demonstrate that no fragile-to-strong crossover occurs in any of the studied compositions.ACS materials letters116-122https://www.ebi.ac.uk/biostudies/studies/S-EPMC12776574biostudies-literatureExperimental Nonevidence of Fragile-to-Strong Crossover.PMC12776574Wieduwilt TVcelakova MBartak JKostal PSchmidt MASlang SMalek JfalseExperimental Nonevidence of Fragile-to-Strong Crossover.This study explores the viscosity behavior of the Ge-Se chalcogenide glass-forming system. Four compositions containing 5, 10, 15, and 20 at. % germanium were examined. Viscosity measurements were performed over a broad range, spanning approximately 13 orders of magnitude, by combining the pressure-assisted melt filling technique with penetration and parallel-plate viscometry. The results demonstrate that no fragile-to-strong crossover occurs in any of the studied compositions.2026-01-01T00:00:00Z2026 Jan2026-06-06T11:50:21.044Z2026-05-30T03:08:30.68ZS-EPMC127765744151005410.1021/acsmaterialslett.5c01178