{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:COZADCEE2GHARPIJPHTHVDH46Q","short_pith_number":"pith:COZADCEE","canonical_record":{"source":{"id":"1902.11177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-28T15:55:45Z","cross_cats_sorted":[],"title_canon_sha256":"76c8eb9fa8cd131bed094eea5ee5b9e95ae2ad5ca2fc99f5c91b1b25d45a0c0b","abstract_canon_sha256":"032c7a9429a01d4fe721c0b0b4ab3cf7083e4d16e092259ebfc24468f9e2f062"},"schema_version":"1.0"},"canonical_sha256":"13b2018884d18e08bd0979e67a8cfcf42bb1f7d1f9c6d81d9f764df3df0153d9","source":{"kind":"arxiv","id":"1902.11177","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.11177","created_at":"2026-05-17T23:52:25Z"},{"alias_kind":"arxiv_version","alias_value":"1902.11177v1","created_at":"2026-05-17T23:52:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.11177","created_at":"2026-05-17T23:52:25Z"},{"alias_kind":"pith_short_12","alias_value":"COZADCEE2GHA","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"COZADCEE2GHARPIJ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"COZADCEE","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:COZADCEE2GHARPIJPHTHVDH46Q","target":"record","payload":{"canonical_record":{"source":{"id":"1902.11177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-28T15:55:45Z","cross_cats_sorted":[],"title_canon_sha256":"76c8eb9fa8cd131bed094eea5ee5b9e95ae2ad5ca2fc99f5c91b1b25d45a0c0b","abstract_canon_sha256":"032c7a9429a01d4fe721c0b0b4ab3cf7083e4d16e092259ebfc24468f9e2f062"},"schema_version":"1.0"},"canonical_sha256":"13b2018884d18e08bd0979e67a8cfcf42bb1f7d1f9c6d81d9f764df3df0153d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:25.531197Z","signature_b64":"nx4wwfXB3/SpuRG55vk5/Lk/qncmQBBhI99WoNLChjfMHaW/qPpr1LnH5Da3u97TfLTSPBTgagQKwrjNm/9rDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13b2018884d18e08bd0979e67a8cfcf42bb1f7d1f9c6d81d9f764df3df0153d9","last_reissued_at":"2026-05-17T23:52:25.530533Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:25.530533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.11177","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":"2026-05-17T23:52:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vISXEivkgrqhZUhrIBtqU6XH2xDD+gF6d+hbN1xMhxJZ+zwOnHeN85WoVAHCJm7YCIj9LBipEOQ6HaET6OHiAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:34:09.225462Z"},"content_sha256":"e34b2ddf419713d62158ba1764c9edcc258192cc7df9c07d910de90975fc578e","schema_version":"1.0","event_id":"sha256:e34b2ddf419713d62158ba1764c9edcc258192cc7df9c07d910de90975fc578e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:COZADCEE2GHARPIJPHTHVDH46Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Temporal dependence of optically-induced photophoretic force on absorbing airborne particles by a power-modulated laser","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Gui-hua Chen, Lin He, Mu-ying Wu, Yong-Qing Li","submitted_at":"2019-02-28T15:55:45Z","abstract_excerpt":"Photophoretic force due to the optically-induced thermal effect provides an effective way to manipulate the light-absorbing particles suspended in ambient gases. However, how this force temporally responds to the intensity modulation of the illumination light is unclear. Here, by vertically trapping a micron-sized absorbing particle with a negative photophoretic force generated by a focused Gaussian beam, we demonstrate that the temporal change in the photophoretic force in response to the intensity modulation is remarkably slow (with a time constant up to ~1 s) due to the slow change in the p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.11177","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":"2026-05-17T23:52:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1EvpSHNsIeCjF+P4GukniJJD8zakHOQ16DB2AiqCwcho70+DxcEhqit0Xh1nrtBglZfTQ5kwSyLwLGkUNOq4DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:34:09.226100Z"},"content_sha256":"053d4943d421d978c311fe9aad2c89f990a3cfe0dae4610f3f0328f984b1b200","schema_version":"1.0","event_id":"sha256:053d4943d421d978c311fe9aad2c89f990a3cfe0dae4610f3f0328f984b1b200"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/COZADCEE2GHARPIJPHTHVDH46Q/bundle.json","state_url":"https://pith.science/pith/COZADCEE2GHARPIJPHTHVDH46Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/COZADCEE2GHARPIJPHTHVDH46Q/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":"2026-06-01T14:34:09Z","links":{"resolver":"https://pith.science/pith/COZADCEE2GHARPIJPHTHVDH46Q","bundle":"https://pith.science/pith/COZADCEE2GHARPIJPHTHVDH46Q/bundle.json","state":"https://pith.science/pith/COZADCEE2GHARPIJPHTHVDH46Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/COZADCEE2GHARPIJPHTHVDH46Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:COZADCEE2GHARPIJPHTHVDH46Q","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":"032c7a9429a01d4fe721c0b0b4ab3cf7083e4d16e092259ebfc24468f9e2f062","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-28T15:55:45Z","title_canon_sha256":"76c8eb9fa8cd131bed094eea5ee5b9e95ae2ad5ca2fc99f5c91b1b25d45a0c0b"},"schema_version":"1.0","source":{"id":"1902.11177","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.11177","created_at":"2026-05-17T23:52:25Z"},{"alias_kind":"arxiv_version","alias_value":"1902.11177v1","created_at":"2026-05-17T23:52:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.11177","created_at":"2026-05-17T23:52:25Z"},{"alias_kind":"pith_short_12","alias_value":"COZADCEE2GHA","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"COZADCEE2GHARPIJ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"COZADCEE","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:053d4943d421d978c311fe9aad2c89f990a3cfe0dae4610f3f0328f984b1b200","target":"graph","created_at":"2026-05-17T23:52:25Z","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":"Photophoretic force due to the optically-induced thermal effect provides an effective way to manipulate the light-absorbing particles suspended in ambient gases. However, how this force temporally responds to the intensity modulation of the illumination light is unclear. Here, by vertically trapping a micron-sized absorbing particle with a negative photophoretic force generated by a focused Gaussian beam, we demonstrate that the temporal change in the photophoretic force in response to the intensity modulation is remarkably slow (with a time constant up to ~1 s) due to the slow change in the p","authors_text":"Gui-hua Chen, Lin He, Mu-ying Wu, Yong-Qing Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-28T15:55:45Z","title":"Temporal dependence of optically-induced photophoretic force on absorbing airborne particles by a power-modulated laser"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.11177","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:e34b2ddf419713d62158ba1764c9edcc258192cc7df9c07d910de90975fc578e","target":"record","created_at":"2026-05-17T23:52:25Z","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":"032c7a9429a01d4fe721c0b0b4ab3cf7083e4d16e092259ebfc24468f9e2f062","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-02-28T15:55:45Z","title_canon_sha256":"76c8eb9fa8cd131bed094eea5ee5b9e95ae2ad5ca2fc99f5c91b1b25d45a0c0b"},"schema_version":"1.0","source":{"id":"1902.11177","kind":"arxiv","version":1}},"canonical_sha256":"13b2018884d18e08bd0979e67a8cfcf42bb1f7d1f9c6d81d9f764df3df0153d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"13b2018884d18e08bd0979e67a8cfcf42bb1f7d1f9c6d81d9f764df3df0153d9","first_computed_at":"2026-05-17T23:52:25.530533Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:25.530533Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nx4wwfXB3/SpuRG55vk5/Lk/qncmQBBhI99WoNLChjfMHaW/qPpr1LnH5Da3u97TfLTSPBTgagQKwrjNm/9rDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:25.531197Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.11177","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e34b2ddf419713d62158ba1764c9edcc258192cc7df9c07d910de90975fc578e","sha256:053d4943d421d978c311fe9aad2c89f990a3cfe0dae4610f3f0328f984b1b200"],"state_sha256":"73db3e034e3ee547fb97284570a3c817e3922220746da246084619fcaed4b401"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1BUmNXC8MlMPoWEi6KCfhk6S7oKKuqAmviIRbeOuwZr3UyyIugQ6bHhv5JHSgP1UW8vs4aITIPLwANgqMzK1DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T14:34:09.229271Z","bundle_sha256":"a0b8ded48f97e33ed3b9d9414a8a9198696147b0a671c386bbbe723568e5156d"}}