{"id":"W4414174013","doi":"10.2139/ssrn.5447206","title":"Size-Driven Hierarchical Microstructure Enabling Brittle-Ductile-Brittle Mechanical Transition in Pyrolyzed Carbon","year":2025,"lang":"en","type":"preprint","venue":"SSRN Electronic Journal","topic":"Microstructure and mechanical properties","field":"Materials Science","cited_by":0,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Toronto","funders":"","keywords":"Microscale chemistry; Microstructure; Ductility (Earth science); Brittleness; Deformation (meteorology); Toughness; Carbon fibers; Deformation mechanism","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow","research_integrity"],"consensus_categories":[],"category_scores_codex":[0.002112129,0.0006859135,0.001092118,0.0003206088,0.0002754693,0.0003223328,0.001194133,0.001113724,0.0002658982],"category_scores_gemma":[0.0003462313,0.0006055211,0.0004443667,0.000284411,0.0001595678,0.0001805877,0.0005573335,0.009904901,0.00001509155],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001731038,"about_ca_system_score_gemma":0.004845503,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0006666419,"about_ca_topic_score_gemma":0.002201963,"domain_scores_codex":[0.9930759,0.0006323242,0.00118062,0.001130465,0.0006323772,0.003348315],"domain_scores_gemma":[0.9984339,0.0001660097,0.0003921018,0.0005991061,0.0001902778,0.0002185497],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.0007424603,0.0000929815,0.00001104646,0.0001774904,0.0001016958,0.00004176774,0.0008372077,0.0008999461,0.9866468,0.007382229,0.00003658333,0.003029765],"study_design_scores_gemma":[0.003567386,0.0004906048,0.00005465516,0.001140338,0.0003265598,0.001451799,0.001001372,0.001988203,0.2664902,0.7206149,0.001414475,0.001459594],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9849173,0.005797342,0.003300933,0.002319666,0.002565947,0.0006912742,0.00009989742,0.0001369353,0.0001706865],"genre_scores_gemma":[0.993713,0.003103271,0.000983966,0.0004295858,0.001067067,0.00003199452,0.00003795801,0.00006702534,0.0005661126],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.7201567,"threshold_uncertainty_score":0.9996396,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.007566801335926354,"score_gpt":0.232027527469413,"score_spread":0.2244607261334866,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}