{"paper":{"title":"Triple junction at the triple point resolved on the individual particle level","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"At the triple point of charged colloids the fcc-bcc interface costs only 1.3 times the energy of the fcc-fluid interface.","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"D. A. Weitz, E. Allahyarov, H. L\\\"owen, M. Chaudhuri, S. U. Egelhaaf","submitted_at":"2017-09-08T12:13:48Z","abstract_excerpt":"At the triple point of a repulsive screened Coulomb system, a face-centered-cubic (fcc) crystal, a body-centered-cubic (bcc) crystal and a fluid phase coexist. At their intersection, these three phases form a liquid groove, the triple junction. Using confocal microscopy, we resolve the triple junction on a single particle level in a model system of charged PMMA colloids in a nonpolar solvent. The groove is found to be extremely deep and the incommensurate solid-solid interface to be very broad. Thermal fluctuations hence appear to dominate the solid-solid interface. This indicates a very low i"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"The fcc-bcc interfacial energy is quantitatively determined based on Young's equation and, indeed, it is only about 1.3 times higher than the fcc-fluid interfacial energy close to the triple point.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"Young's equation can be applied directly to the measured contact angles without appreciable line-tension corrections or optical-resolution bias at the three-phase contact line.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"At the triple point of a screened-Coulomb colloidal system the fcc-bcc interface is thermally broadened and its energy is only 1.3 times the fcc-fluid interfacial energy.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"At the triple point of charged colloids the fcc-bcc interface costs only 1.3 times the energy of the fcc-fluid interface.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"406beb49c77a096133bec2fb5509018090da10330cf3a0364d23bfe8f7d71694"},"source":{"id":"1709.02668","kind":"arxiv","version":1},"verdict":{"id":"7319f499-aeff-4f93-a1a1-7ef6cb4f2cd9","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T22:17:44.248306Z","strongest_claim":"The fcc-bcc interfacial energy is quantitatively determined based on Young's equation and, indeed, it is only about 1.3 times higher than the fcc-fluid interfacial energy close to the triple point.","one_line_summary":"At the triple point of a screened-Coulomb colloidal system the fcc-bcc interface is thermally broadened and its energy is only 1.3 times the fcc-fluid interfacial energy.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"Young's equation can be applied directly to the measured contact angles without appreciable line-tension corrections or optical-resolution bias at the three-phase contact line.","pith_extraction_headline":"At the triple point of charged colloids the fcc-bcc interface costs only 1.3 times the energy of the fcc-fluid interface."},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":1,"snapshot_sha256":"a8872e0ef79ed0f77bdb0e9c65ee637db198d5687e5139355ada01f12e0333f8"},"author_claims":{"count":1,"strong_count":1,"snapshot_sha256":"5e3b23b793a24ad44d50f012bed3c12f7c9e9c566d826ad85b79440943422c6c"},"builder_version":"pith-number-builder-2026-05-17-v1"}