{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:VVGK4F5WIFRVUP3KOYZYXU64CP","short_pith_number":"pith:VVGK4F5W","schema_version":"1.0","canonical_sha256":"ad4cae17b641635a3f6a76338bd3dc13ce78cb7ee6a95a8eebf1282c3f38ab7a","source":{"kind":"arxiv","id":"0904.4037","version":1},"attestation_state":"computed","paper":{"title":"First-principles design of nanomachines","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Amos Maritan, Jayanth R. Banavar, Marek Cieplak, Trinh Xuan Hoang","submitted_at":"2009-04-26T16:37:20Z","abstract_excerpt":"Learning from nature's amazing molecular machines, globular proteins, we present a framework for the predictive design of nano-machines. We show that the crucial ingredients for a chain molecule to behave as a machine are its inherent anisotropy and the coupling between the local Frenet coordinate reference frames of nearby monomers. We demonstrate that, even in the absence of heterogeneity, protein-like behavior is obtained for a simple chain molecule made up of just thirty hard spheres. This chain spontaneously switches between two distinct geometries, a single helix and a dual helix, merely"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0904.4037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2009-04-26T16:37:20Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"1062d5214c82450b2e540b6a9fff2212d80c5830303d2e233d04f3f8caf40846","abstract_canon_sha256":"574ee187b8d5e617383d1723f0f8670d921d39e2f9fdef637b5fea96c08cd4d9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:57.290649Z","signature_b64":"meM7xww4oJRJqzgYLnqz/VcwpAteJLEkoKpiO2KCnfdl4yvMGaVZslQ7GLxv/r14ykqf/9iwm4Oc4DuVSUfXDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad4cae17b641635a3f6a76338bd3dc13ce78cb7ee6a95a8eebf1282c3f38ab7a","last_reissued_at":"2026-05-18T02:13:57.289974Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:57.289974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"First-principles design of nanomachines","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Amos Maritan, Jayanth R. Banavar, Marek Cieplak, Trinh Xuan Hoang","submitted_at":"2009-04-26T16:37:20Z","abstract_excerpt":"Learning from nature's amazing molecular machines, globular proteins, we present a framework for the predictive design of nano-machines. We show that the crucial ingredients for a chain molecule to behave as a machine are its inherent anisotropy and the coupling between the local Frenet coordinate reference frames of nearby monomers. We demonstrate that, even in the absence of heterogeneity, protein-like behavior is obtained for a simple chain molecule made up of just thirty hard spheres. This chain spontaneously switches between two distinct geometries, a single helix and a dual helix, merely"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.4037","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"0904.4037","created_at":"2026-05-18T02:13:57.290075+00:00"},{"alias_kind":"arxiv_version","alias_value":"0904.4037v1","created_at":"2026-05-18T02:13:57.290075+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.4037","created_at":"2026-05-18T02:13:57.290075+00:00"},{"alias_kind":"pith_short_12","alias_value":"VVGK4F5WIFRV","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_16","alias_value":"VVGK4F5WIFRVUP3K","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_8","alias_value":"VVGK4F5W","created_at":"2026-05-18T12:26:02.257875+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP","json":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP.json","graph_json":"https://pith.science/api/pith-number/VVGK4F5WIFRVUP3KOYZYXU64CP/graph.json","events_json":"https://pith.science/api/pith-number/VVGK4F5WIFRVUP3KOYZYXU64CP/events.json","paper":"https://pith.science/paper/VVGK4F5W"},"agent_actions":{"view_html":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP","download_json":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP.json","view_paper":"https://pith.science/paper/VVGK4F5W","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0904.4037&json=true","fetch_graph":"https://pith.science/api/pith-number/VVGK4F5WIFRVUP3KOYZYXU64CP/graph.json","fetch_events":"https://pith.science/api/pith-number/VVGK4F5WIFRVUP3KOYZYXU64CP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP/action/storage_attestation","attest_author":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP/action/author_attestation","sign_citation":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP/action/citation_signature","submit_replication":"https://pith.science/pith/VVGK4F5WIFRVUP3KOYZYXU64CP/action/replication_record"}},"created_at":"2026-05-18T02:13:57.290075+00:00","updated_at":"2026-05-18T02:13:57.290075+00:00"}