{"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":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.00006646861,0.0001256343,0.0001216292,0.0001221562,0.0002474496,0.0003339282,0.0003050728,0.0002532793,0.003179497],"category_scores_gemma":[0.000203363,0.0001529247,0.00007577494,0.000122872,0.0002904861,0.000310822,0.0002637093,0.0004583771,0.0002825767],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003230017,"about_ca_system_score_gemma":0.0002070582,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0005433829,"about_ca_topic_score_gemma":0.001682624,"domain_scores_codex":[0.9999436,0.000002488642,0.000002044525,0.00001342976,0.00002285925,0.00001555269],"domain_scores_gemma":[0.9998801,0.00003159521,0.00001886214,0.00002409485,0.00001921346,0.00002622032],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.00007533043,0.00004984844,0.0001971927,0.0001047281,0.000005291498,0.0001473418,0.00007742657,0.002096009,0.9871734,0.005024854,0.000738757,0.004309775],"study_design_scores_gemma":[0.00006977086,0.0003781329,0.008503127,0.00001335694,0.000007865865,0.0001729501,0.0001072649,0.0313908,0.9506619,0.003343479,0.005315598,0.00003579132],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9863237,0.0003931341,0.003916632,0.000139263,0.00008574959,0.00002554475,0.0001504629,0.0004405014,0.008525018],"genre_scores_gemma":[0.998281,0.00007692437,0.0007734791,0.00001958957,0.000008618107,0.00001024852,0.00004154129,0.00003010917,0.000758566],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.003179497,"threshold_uncertainty_score":0.01063645,"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."}}