{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:TJCH2X6GZG6KVVRFOVA6HNI7T2","short_pith_number":"pith:TJCH2X6G","canonical_record":{"source":{"id":"1812.02242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-12-05T21:54:27Z","cross_cats_sorted":[],"title_canon_sha256":"4ac451e96c8adc82654cff54afeeaabc8e9a78f9638c93d38d2541093582d8d5","abstract_canon_sha256":"2f785c0d9860e3107b1b72e64c823d1ba2a7222661fb9ae5d8c3216232a41404"},"schema_version":"1.0"},"canonical_sha256":"9a447d5fc6c9bcaad6257541e3b51f9eb1d8e9d7a0cb8a174d79be53c9cb2f20","source":{"kind":"arxiv","id":"1812.02242","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.02242","created_at":"2026-05-17T23:50:22Z"},{"alias_kind":"arxiv_version","alias_value":"1812.02242v1","created_at":"2026-05-17T23:50:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.02242","created_at":"2026-05-17T23:50:22Z"},{"alias_kind":"pith_short_12","alias_value":"TJCH2X6GZG6K","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"TJCH2X6GZG6KVVRF","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"TJCH2X6G","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:TJCH2X6GZG6KVVRFOVA6HNI7T2","target":"record","payload":{"canonical_record":{"source":{"id":"1812.02242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-12-05T21:54:27Z","cross_cats_sorted":[],"title_canon_sha256":"4ac451e96c8adc82654cff54afeeaabc8e9a78f9638c93d38d2541093582d8d5","abstract_canon_sha256":"2f785c0d9860e3107b1b72e64c823d1ba2a7222661fb9ae5d8c3216232a41404"},"schema_version":"1.0"},"canonical_sha256":"9a447d5fc6c9bcaad6257541e3b51f9eb1d8e9d7a0cb8a174d79be53c9cb2f20","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:22.623345Z","signature_b64":"Ghsu/50ZoUBYlrD8Z5fYHOSPpk8c760omKI3XMCth5SL7y/gV2dw5r56HZuHc7apT1pVZbNMrl7JFLzIItczDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a447d5fc6c9bcaad6257541e3b51f9eb1d8e9d7a0cb8a174d79be53c9cb2f20","last_reissued_at":"2026-05-17T23:50:22.622694Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:22.622694Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.02242","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":"2026-05-17T23:50:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Opy8Kt0gvLGG6U1XrMTQBQNf3Z3o0FcjNzWy++SFjWs7LUaOhfSH9MCTnaPHGY6/Pss1R6h7Dd6BmABC8DtxAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:19:16.259910Z"},"content_sha256":"16667c1e946f234796c143eb8309c1862a286a25b12ebb7a49a3ac9eb36dd60f","schema_version":"1.0","event_id":"sha256:16667c1e946f234796c143eb8309c1862a286a25b12ebb7a49a3ac9eb36dd60f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:TJCH2X6GZG6KVVRFOVA6HNI7T2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bloch oscillation of elastic waves in the graded lattice of 3D-printed hollow elliptical cylinders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Eunho Kim, Hyunryung Kim, Jinkyu Yang, Xiaotian Shi","submitted_at":"2018-12-05T21:54:27Z","abstract_excerpt":"We study the Bloch oscillation of elastic waves in a chain composed of hollow elliptical cylinders (HECs). These HECs are 3D-printed in different wall thicknesses and are arranged to form a graded chain. We find that the frequency band structure of this lattice can be manipulated in a way to create a narrow strip of transmission range sandwiched between slanted stop bands. This enables the trapping of elastic waves at a specific location of the chain, which depends on the input frequency of the propagating elastic waves. This elastic Bloch oscillation in a tailorable 3D-printed system enables "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.02242","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":"2026-05-17T23:50:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6GRPitMN40jedAreSbR6MKFS8nZdiE/NC9/OMj2HUs4S1CDLbrmRx9IGyNSb7TnUnnacO/5UDsg82K/VrXArDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:19:16.260533Z"},"content_sha256":"26c16a033256d59ba06c2f53a45611fd9015769fa5d476eaa056d23777332eb8","schema_version":"1.0","event_id":"sha256:26c16a033256d59ba06c2f53a45611fd9015769fa5d476eaa056d23777332eb8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TJCH2X6GZG6KVVRFOVA6HNI7T2/bundle.json","state_url":"https://pith.science/pith/TJCH2X6GZG6KVVRFOVA6HNI7T2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TJCH2X6GZG6KVVRFOVA6HNI7T2/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":"2026-05-27T08:19:16Z","links":{"resolver":"https://pith.science/pith/TJCH2X6GZG6KVVRFOVA6HNI7T2","bundle":"https://pith.science/pith/TJCH2X6GZG6KVVRFOVA6HNI7T2/bundle.json","state":"https://pith.science/pith/TJCH2X6GZG6KVVRFOVA6HNI7T2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TJCH2X6GZG6KVVRFOVA6HNI7T2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:TJCH2X6GZG6KVVRFOVA6HNI7T2","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":"2f785c0d9860e3107b1b72e64c823d1ba2a7222661fb9ae5d8c3216232a41404","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-12-05T21:54:27Z","title_canon_sha256":"4ac451e96c8adc82654cff54afeeaabc8e9a78f9638c93d38d2541093582d8d5"},"schema_version":"1.0","source":{"id":"1812.02242","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.02242","created_at":"2026-05-17T23:50:22Z"},{"alias_kind":"arxiv_version","alias_value":"1812.02242v1","created_at":"2026-05-17T23:50:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.02242","created_at":"2026-05-17T23:50:22Z"},{"alias_kind":"pith_short_12","alias_value":"TJCH2X6GZG6K","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"TJCH2X6GZG6KVVRF","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"TJCH2X6G","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:26c16a033256d59ba06c2f53a45611fd9015769fa5d476eaa056d23777332eb8","target":"graph","created_at":"2026-05-17T23:50:22Z","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":"We study the Bloch oscillation of elastic waves in a chain composed of hollow elliptical cylinders (HECs). These HECs are 3D-printed in different wall thicknesses and are arranged to form a graded chain. We find that the frequency band structure of this lattice can be manipulated in a way to create a narrow strip of transmission range sandwiched between slanted stop bands. This enables the trapping of elastic waves at a specific location of the chain, which depends on the input frequency of the propagating elastic waves. This elastic Bloch oscillation in a tailorable 3D-printed system enables ","authors_text":"Eunho Kim, Hyunryung Kim, Jinkyu Yang, Xiaotian Shi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-12-05T21:54:27Z","title":"Bloch oscillation of elastic waves in the graded lattice of 3D-printed hollow elliptical cylinders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.02242","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":"sha256:16667c1e946f234796c143eb8309c1862a286a25b12ebb7a49a3ac9eb36dd60f","target":"record","created_at":"2026-05-17T23:50:22Z","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":"2f785c0d9860e3107b1b72e64c823d1ba2a7222661fb9ae5d8c3216232a41404","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-12-05T21:54:27Z","title_canon_sha256":"4ac451e96c8adc82654cff54afeeaabc8e9a78f9638c93d38d2541093582d8d5"},"schema_version":"1.0","source":{"id":"1812.02242","kind":"arxiv","version":1}},"canonical_sha256":"9a447d5fc6c9bcaad6257541e3b51f9eb1d8e9d7a0cb8a174d79be53c9cb2f20","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a447d5fc6c9bcaad6257541e3b51f9eb1d8e9d7a0cb8a174d79be53c9cb2f20","first_computed_at":"2026-05-17T23:50:22.622694Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:22.622694Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ghsu/50ZoUBYlrD8Z5fYHOSPpk8c760omKI3XMCth5SL7y/gV2dw5r56HZuHc7apT1pVZbNMrl7JFLzIItczDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:22.623345Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.02242","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16667c1e946f234796c143eb8309c1862a286a25b12ebb7a49a3ac9eb36dd60f","sha256:26c16a033256d59ba06c2f53a45611fd9015769fa5d476eaa056d23777332eb8"],"state_sha256":"67a2bb2ce637dfcd847f6afeadf9a4da5457e0341759bbb7e0c8a329ffcf0c29"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E+Tau0HW56OaxHPW6EYzBHirqyPCv9/OXLem5Vpz4AARFf2ZwJllw+wObbsNbBsXMWJ6SJYWHPB6hVKTlPI6Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T08:19:16.263694Z","bundle_sha256":"fe7bcd50bacc8c4be24cfc3e8810fcd38b36669c61d16083abfb71e4e73c3e11"}}