{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:VYB3NSSMNC3HUYXKYAEANFZTRB","short_pith_number":"pith:VYB3NSSM","canonical_record":{"source":{"id":"1205.2885","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-13T17:17:28Z","cross_cats_sorted":[],"title_canon_sha256":"c4608650286f14f560dd1e960f4fc867aaee01cc8b3a2fd21ed4b46fb8e4f015","abstract_canon_sha256":"2d7e178d51256eb2fc7c34a1031bac9241e130ea7e233b0de416fd347e87f68c"},"schema_version":"1.0"},"canonical_sha256":"ae03b6ca4c68b67a62eac008069733886616997e4cb8208f42d6f082f89a687d","source":{"kind":"arxiv","id":"1205.2885","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2885","created_at":"2026-05-18T03:06:03Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2885v2","created_at":"2026-05-18T03:06:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2885","created_at":"2026-05-18T03:06:03Z"},{"alias_kind":"pith_short_12","alias_value":"VYB3NSSMNC3H","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VYB3NSSMNC3HUYXK","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VYB3NSSM","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:VYB3NSSMNC3HUYXKYAEANFZTRB","target":"record","payload":{"canonical_record":{"source":{"id":"1205.2885","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-13T17:17:28Z","cross_cats_sorted":[],"title_canon_sha256":"c4608650286f14f560dd1e960f4fc867aaee01cc8b3a2fd21ed4b46fb8e4f015","abstract_canon_sha256":"2d7e178d51256eb2fc7c34a1031bac9241e130ea7e233b0de416fd347e87f68c"},"schema_version":"1.0"},"canonical_sha256":"ae03b6ca4c68b67a62eac008069733886616997e4cb8208f42d6f082f89a687d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:06:03.695339Z","signature_b64":"WVoToQohWzJO7JsQJaT+7piW+x1k4lnOrRRB4g+ko7PUMo/xEEBxQq9a8/PxCP4q3g1NDaYwVzBdUvQeaNBfCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae03b6ca4c68b67a62eac008069733886616997e4cb8208f42d6f082f89a687d","last_reissued_at":"2026-05-18T03:06:03.694533Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:06:03.694533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.2885","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:06:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"quq4nor73vm6p72ZTpUunGItPnhnE+do3Gq07gWUIKEUCL4qfAG6vL++DvVBfMw0KbLuLE7GbjlKv2ghpSxtCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:55:22.475277Z"},"content_sha256":"47dff33aa0a63d173b180db45aa995acc45f845cfb09fe51fddcf1a9e42e9f85","schema_version":"1.0","event_id":"sha256:47dff33aa0a63d173b180db45aa995acc45f845cfb09fe51fddcf1a9e42e9f85"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:VYB3NSSMNC3HUYXKYAEANFZTRB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Drop-coated Titanium Dioxide Memristors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrew Adamatzky, Ben De Lacy Costello, Ella Gale, Richard Mayne","submitted_at":"2012-05-13T17:17:28Z","abstract_excerpt":"The fabrication of memristors by drop-coating sol-gel Ti(OH)$_4$ solution onto either aluminium foil or sputter-coated aluminium on plastic is presented. The gel layer is thick, 37$\\mu$m, but both devices exhibit good memristance I-V profiles. The drop coated aluminium foil memristors compare favourably with the sputter-coated ones, demonstrating an expansion in the accessibility of memristor fabrication. A comparison between aluminium and gold for use as the sputter-coated electrodes shows that aluminium is the better choice as using gold leads to device failure. The devices do not require a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2885","kind":"arxiv","version":2},"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":"2026-05-18T03:06:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mrASdQSoPbhytlQZkOa6q4UcAqSMi+EIXblHJ3lD6wPx2TnshqxO2TeOVdH9YJm5UuKeFt7mYKO5E6RFgCeyCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:55:22.475638Z"},"content_sha256":"8c3454f9a120b6a615db19f96177c66d961cef1e399779d08f6a9394910a10ca","schema_version":"1.0","event_id":"sha256:8c3454f9a120b6a615db19f96177c66d961cef1e399779d08f6a9394910a10ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VYB3NSSMNC3HUYXKYAEANFZTRB/bundle.json","state_url":"https://pith.science/pith/VYB3NSSMNC3HUYXKYAEANFZTRB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VYB3NSSMNC3HUYXKYAEANFZTRB/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":"2026-05-28T05:55:22Z","links":{"resolver":"https://pith.science/pith/VYB3NSSMNC3HUYXKYAEANFZTRB","bundle":"https://pith.science/pith/VYB3NSSMNC3HUYXKYAEANFZTRB/bundle.json","state":"https://pith.science/pith/VYB3NSSMNC3HUYXKYAEANFZTRB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VYB3NSSMNC3HUYXKYAEANFZTRB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VYB3NSSMNC3HUYXKYAEANFZTRB","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":"2d7e178d51256eb2fc7c34a1031bac9241e130ea7e233b0de416fd347e87f68c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-13T17:17:28Z","title_canon_sha256":"c4608650286f14f560dd1e960f4fc867aaee01cc8b3a2fd21ed4b46fb8e4f015"},"schema_version":"1.0","source":{"id":"1205.2885","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2885","created_at":"2026-05-18T03:06:03Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2885v2","created_at":"2026-05-18T03:06:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2885","created_at":"2026-05-18T03:06:03Z"},{"alias_kind":"pith_short_12","alias_value":"VYB3NSSMNC3H","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VYB3NSSMNC3HUYXK","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VYB3NSSM","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:8c3454f9a120b6a615db19f96177c66d961cef1e399779d08f6a9394910a10ca","target":"graph","created_at":"2026-05-18T03:06:03Z","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":"The fabrication of memristors by drop-coating sol-gel Ti(OH)$_4$ solution onto either aluminium foil or sputter-coated aluminium on plastic is presented. The gel layer is thick, 37$\\mu$m, but both devices exhibit good memristance I-V profiles. The drop coated aluminium foil memristors compare favourably with the sputter-coated ones, demonstrating an expansion in the accessibility of memristor fabrication. A comparison between aluminium and gold for use as the sputter-coated electrodes shows that aluminium is the better choice as using gold leads to device failure. The devices do not require a ","authors_text":"Andrew Adamatzky, Ben De Lacy Costello, Ella Gale, Richard Mayne","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-13T17:17:28Z","title":"Drop-coated Titanium Dioxide Memristors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2885","kind":"arxiv","version":2},"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":"sha256:47dff33aa0a63d173b180db45aa995acc45f845cfb09fe51fddcf1a9e42e9f85","target":"record","created_at":"2026-05-18T03:06:03Z","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":"2d7e178d51256eb2fc7c34a1031bac9241e130ea7e233b0de416fd347e87f68c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-13T17:17:28Z","title_canon_sha256":"c4608650286f14f560dd1e960f4fc867aaee01cc8b3a2fd21ed4b46fb8e4f015"},"schema_version":"1.0","source":{"id":"1205.2885","kind":"arxiv","version":2}},"canonical_sha256":"ae03b6ca4c68b67a62eac008069733886616997e4cb8208f42d6f082f89a687d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae03b6ca4c68b67a62eac008069733886616997e4cb8208f42d6f082f89a687d","first_computed_at":"2026-05-18T03:06:03.694533Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:06:03.694533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WVoToQohWzJO7JsQJaT+7piW+x1k4lnOrRRB4g+ko7PUMo/xEEBxQq9a8/PxCP4q3g1NDaYwVzBdUvQeaNBfCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:06:03.695339Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.2885","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:47dff33aa0a63d173b180db45aa995acc45f845cfb09fe51fddcf1a9e42e9f85","sha256:8c3454f9a120b6a615db19f96177c66d961cef1e399779d08f6a9394910a10ca"],"state_sha256":"ceea789cd6ae90e30684395eb2183a57dd7c651fa18fb900c20dee0cb18e92e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AI0NiCLYwsHd4S2aQ2NA7ym611hBBXZ7ElNyfcFRJsdm4oU0kmr+G9RHRCW8C/GCLRU7OKL87854Q38PnjykCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T05:55:22.477601Z","bundle_sha256":"fd1dc35e70a09873d41008469e87f44e2e09b3d96c0566f6493e940b29274410"}}