{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["14(1)"],"submitter":["Sun YT"],"pubmed_abstract":["How glasses relax at room temperature is still a great challenge for both experimental and simulation studies due to the extremely long relaxation time-scale. Here, by employing a modified molecular dynamics simulation technique, we extend the quantitative measurement of relaxation process of metallic glasses to room temperature. Both energy relaxation and dynamics, at low temperatures, follow a stretched exponential decay with a characteristic stretching exponent β = 3/7, which is distinct from that of supercooled liquid. Such aging dynamics originates from the release of energy, an intrinsic nature of out-of-equilibrium system, and manifests itself as the elimination of defects through localized atomic strains. This finding is also supported by long-time stress-relaxation experiments of various metallic glasses, confirming its validity and universality. Here, we show that the distinct relaxation mechanism can be regarded as a direct indicator of glass transition from a dynamic perspective."],"journal":["Nature communications"],"pagination":["540"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9892575"],"repository":["biostudies-literature"],"pubmed_title":["Distinct relaxation mechanism at room temperature in metallic glass."],"pmcid":["PMC9892575"],"pubmed_authors":["Bai HY","Zhao R","Ding DW","Sun YT","Liu YH","Li MZ","Wang WH"],"additional_accession":[]},"is_claimable":false,"name":"Distinct relaxation mechanism at room temperature in metallic glass.","description":"How glasses relax at room temperature is still a great challenge for both experimental and simulation studies due to the extremely long relaxation time-scale. Here, by employing a modified molecular dynamics simulation technique, we extend the quantitative measurement of relaxation process of metallic glasses to room temperature. Both energy relaxation and dynamics, at low temperatures, follow a stretched exponential decay with a characteristic stretching exponent β = 3/7, which is distinct from that of supercooled liquid. Such aging dynamics originates from the release of energy, an intrinsic nature of out-of-equilibrium system, and manifests itself as the elimination of defects through localized atomic strains. This finding is also supported by long-time stress-relaxation experiments of various metallic glasses, confirming its validity and universality. Here, we show that the distinct relaxation mechanism can be regarded as a direct indicator of glass transition from a dynamic perspective.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Feb","modification":"2025-04-26T12:55:02.089Z","creation":"2025-04-06T14:07:37.321Z"},"accession":"S-EPMC9892575","cross_references":{"pubmed":["36725882"],"doi":["10.1038/s41467-023-36300-x"]}}