{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:POXYBKBQL4MD7KJUIGLIGFMB3B","short_pith_number":"pith:POXYBKBQ","canonical_record":{"source":{"id":"1609.00230","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-09-01T13:40:00Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e04edb068f5c633d1deec62e08ce350151bf7b527966c389ae6a7c26a8bc2c9e","abstract_canon_sha256":"47b5afdc2eab13da671f29968ae4ac2701d184e0f314a7343ea3369a0330e757"},"schema_version":"1.0"},"canonical_sha256":"7baf80a8305f183fa9344196831581d85aece0786fb623a25cf441c88d06e754","source":{"kind":"arxiv","id":"1609.00230","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00230","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00230v1","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00230","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"pith_short_12","alias_value":"POXYBKBQL4MD","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"POXYBKBQL4MD7KJU","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"POXYBKBQ","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:POXYBKBQL4MD7KJUIGLIGFMB3B","target":"record","payload":{"canonical_record":{"source":{"id":"1609.00230","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-09-01T13:40:00Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e04edb068f5c633d1deec62e08ce350151bf7b527966c389ae6a7c26a8bc2c9e","abstract_canon_sha256":"47b5afdc2eab13da671f29968ae4ac2701d184e0f314a7343ea3369a0330e757"},"schema_version":"1.0"},"canonical_sha256":"7baf80a8305f183fa9344196831581d85aece0786fb623a25cf441c88d06e754","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:58:28.428196Z","signature_b64":"crHOIOAnd6/qjEJOx4oMUFyyFYFMbhpi6smNYslG63Spl2Ta0Kt1aNKcZpzA5sYMGuWed6ZhHf4C6pn9S1L3Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7baf80a8305f183fa9344196831581d85aece0786fb623a25cf441c88d06e754","last_reissued_at":"2026-05-18T00:58:28.427635Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:58:28.427635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.00230","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:58:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/A6q/B9QvPialKpE+bznzRx86RX0R+T2V9SG6pLkZm13ExGLApW4kGiETn9fRtXWpvnSoqBWkxuRACqZ2fW/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:57:48.517826Z"},"content_sha256":"d881fa46d8ddad19d686d74e06eb3b899808d5d6dacb5d37c7f8ddb48796f1ec","schema_version":"1.0","event_id":"sha256:d881fa46d8ddad19d686d74e06eb3b899808d5d6dacb5d37c7f8ddb48796f1ec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:POXYBKBQL4MD7KJUIGLIGFMB3B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Controlling Marangoni induced instabilities in spin-cast polymer films: how to prepare uniform films","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.soft","authors_text":"Celine Ruscher, James A. Forrest, Joshua D. McGraw, Kari Dalnoki-Veress, Paul D. Fowler","submitted_at":"2016-09-01T13:40:00Z","abstract_excerpt":"In both research and industrial settings spin coating is extensively used to prepare highly uniform thin polymer films. However, under certain conditions, spin coating results in films with non-uniform surface morphologies. Although the spin coating process has been extensively studied, the origin of these morphologies is not fully understood and the formation of non-uniform spincast films remains a practical problem. Here we report on experiments demonstrating that the formation of surface instabilities during spin coating is dependent on temperature. Our results suggest that non-uniform spin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00230","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:58:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S7BfduUIeR7zKqKSG2ucr0jdV4OcUmbEt4lUiqLZNkbdvnd0im6tSDgptkRCABO0GfzP1CZkYLGwyQhqoHKGDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:57:48.518523Z"},"content_sha256":"efaefb5b8f98196fabd593a724ef2829bb9e4f0099a20c9a412a268333c00c60","schema_version":"1.0","event_id":"sha256:efaefb5b8f98196fabd593a724ef2829bb9e4f0099a20c9a412a268333c00c60"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/POXYBKBQL4MD7KJUIGLIGFMB3B/bundle.json","state_url":"https://pith.science/pith/POXYBKBQL4MD7KJUIGLIGFMB3B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/POXYBKBQL4MD7KJUIGLIGFMB3B/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T11:57:48Z","links":{"resolver":"https://pith.science/pith/POXYBKBQL4MD7KJUIGLIGFMB3B","bundle":"https://pith.science/pith/POXYBKBQL4MD7KJUIGLIGFMB3B/bundle.json","state":"https://pith.science/pith/POXYBKBQL4MD7KJUIGLIGFMB3B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/POXYBKBQL4MD7KJUIGLIGFMB3B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:POXYBKBQL4MD7KJUIGLIGFMB3B","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"47b5afdc2eab13da671f29968ae4ac2701d184e0f314a7343ea3369a0330e757","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-09-01T13:40:00Z","title_canon_sha256":"e04edb068f5c633d1deec62e08ce350151bf7b527966c389ae6a7c26a8bc2c9e"},"schema_version":"1.0","source":{"id":"1609.00230","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00230","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00230v1","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00230","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"pith_short_12","alias_value":"POXYBKBQL4MD","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"POXYBKBQL4MD7KJU","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"POXYBKBQ","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:efaefb5b8f98196fabd593a724ef2829bb9e4f0099a20c9a412a268333c00c60","target":"graph","created_at":"2026-05-18T00:58:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"In both research and industrial settings spin coating is extensively used to prepare highly uniform thin polymer films. However, under certain conditions, spin coating results in films with non-uniform surface morphologies. Although the spin coating process has been extensively studied, the origin of these morphologies is not fully understood and the formation of non-uniform spincast films remains a practical problem. Here we report on experiments demonstrating that the formation of surface instabilities during spin coating is dependent on temperature. Our results suggest that non-uniform spin","authors_text":"Celine Ruscher, James A. Forrest, Joshua D. McGraw, Kari Dalnoki-Veress, Paul D. Fowler","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-09-01T13:40:00Z","title":"Controlling Marangoni induced instabilities in spin-cast polymer films: how to prepare uniform films"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00230","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d881fa46d8ddad19d686d74e06eb3b899808d5d6dacb5d37c7f8ddb48796f1ec","target":"record","created_at":"2026-05-18T00:58:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"47b5afdc2eab13da671f29968ae4ac2701d184e0f314a7343ea3369a0330e757","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-09-01T13:40:00Z","title_canon_sha256":"e04edb068f5c633d1deec62e08ce350151bf7b527966c389ae6a7c26a8bc2c9e"},"schema_version":"1.0","source":{"id":"1609.00230","kind":"arxiv","version":1}},"canonical_sha256":"7baf80a8305f183fa9344196831581d85aece0786fb623a25cf441c88d06e754","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7baf80a8305f183fa9344196831581d85aece0786fb623a25cf441c88d06e754","first_computed_at":"2026-05-18T00:58:28.427635Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:58:28.427635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"crHOIOAnd6/qjEJOx4oMUFyyFYFMbhpi6smNYslG63Spl2Ta0Kt1aNKcZpzA5sYMGuWed6ZhHf4C6pn9S1L3Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:58:28.428196Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.00230","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d881fa46d8ddad19d686d74e06eb3b899808d5d6dacb5d37c7f8ddb48796f1ec","sha256:efaefb5b8f98196fabd593a724ef2829bb9e4f0099a20c9a412a268333c00c60"],"state_sha256":"67a6b57a409fb3b24efd23f3b3443a34879f653196b96386ba7e46778e61eb83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hkc/gEUmtF/upBgyuOfGXgWtb8x2vOQwc/RjfRRcVbnSUpiX1VMYILvVBIYk2BlXvMU9QTiFYj5fPvC0/ktfAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T11:57:48.521630Z","bundle_sha256":"a25d586b66fe65713d1a7720b5fc555a51cf6fbfc62b0ccff571de1e453a1884"}}