{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2006:OYANIUEDQQTWHUKODID2IULYP6","short_pith_number":"pith:OYANIUED","schema_version":"1.0","canonical_sha256":"7600d45083842763d14e1a07a451787f8ed4c69599443eeaeeddc633431b0906","source":{"kind":"arxiv","id":"physics/0607286","version":1},"attestation_state":"computed","paper":{"title":"Modelling optical micro-machines","license":"","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.optics","authors_text":"Agata M. Branczyk, Halina Rubinsztein-Dunlop, Norman R. Heckenberg, Timo A. Nieminen, Vincent L. Y. Loke","submitted_at":"2006-07-30T23:42:30Z","abstract_excerpt":"A strongly focused laser beam can be used to trap, manipulate and exert torque on a microparticle. The torque is the result of transfer of angular momentum by scattering of the laser beam. The laser could be used to drive a rotor, impeller, cog wheel or some other microdevice of a few microns in size, perhaps fabricated from a birefringent material. We review our methods of computationally simulating the torque and force imparted by a laser beam. We introduce a method of hybridizing the T-matrix with the Finite Difference Frequency Domain (FDFD) method to allow the modelling of materials that "},"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":"physics/0607286","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.optics","submitted_at":"2006-07-30T23:42:30Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"065ca33fb13be5541e861bcd6326c0957723b1f65a3c5df3c685f5b63c9323de","abstract_canon_sha256":"cd552a40fb69f3e9ba892f19161997239235d78b9df6641f3c34bec84fd6c444"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:56:13.283292Z","signature_b64":"kZ7jLDVcxlA7DG6qO2h/OCftB1YZ9h4cdj4NhB8QOqLYhZoNtzxRY0bd4B5aOL7Imb2Cu1JEeTf2oemXStYyAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7600d45083842763d14e1a07a451787f8ed4c69599443eeaeeddc633431b0906","last_reissued_at":"2026-07-04T14:56:13.282865Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:56:13.282865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Modelling optical micro-machines","license":"","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.optics","authors_text":"Agata M. Branczyk, Halina Rubinsztein-Dunlop, Norman R. Heckenberg, Timo A. Nieminen, Vincent L. Y. Loke","submitted_at":"2006-07-30T23:42:30Z","abstract_excerpt":"A strongly focused laser beam can be used to trap, manipulate and exert torque on a microparticle. The torque is the result of transfer of angular momentum by scattering of the laser beam. The laser could be used to drive a rotor, impeller, cog wheel or some other microdevice of a few microns in size, perhaps fabricated from a birefringent material. We review our methods of computationally simulating the torque and force imparted by a laser beam. We introduce a method of hybridizing the T-matrix with the Finite Difference Frequency Domain (FDFD) method to allow the modelling of materials that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0607286","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/physics/0607286/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"physics/0607286","created_at":"2026-07-04T14:56:13.282930+00:00"},{"alias_kind":"arxiv_version","alias_value":"physics/0607286v1","created_at":"2026-07-04T14:56:13.282930+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0607286","created_at":"2026-07-04T14:56:13.282930+00:00"},{"alias_kind":"pith_short_12","alias_value":"OYANIUEDQQTW","created_at":"2026-07-04T14:56:13.282930+00:00"},{"alias_kind":"pith_short_16","alias_value":"OYANIUEDQQTWHUKO","created_at":"2026-07-04T14:56:13.282930+00:00"},{"alias_kind":"pith_short_8","alias_value":"OYANIUED","created_at":"2026-07-04T14:56:13.282930+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/OYANIUEDQQTWHUKODID2IULYP6","json":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6.json","graph_json":"https://pith.science/api/pith-number/OYANIUEDQQTWHUKODID2IULYP6/graph.json","events_json":"https://pith.science/api/pith-number/OYANIUEDQQTWHUKODID2IULYP6/events.json","paper":"https://pith.science/paper/OYANIUED"},"agent_actions":{"view_html":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6","download_json":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6.json","view_paper":"https://pith.science/paper/OYANIUED","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=physics/0607286&json=true","fetch_graph":"https://pith.science/api/pith-number/OYANIUEDQQTWHUKODID2IULYP6/graph.json","fetch_events":"https://pith.science/api/pith-number/OYANIUEDQQTWHUKODID2IULYP6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6/action/storage_attestation","attest_author":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6/action/author_attestation","sign_citation":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6/action/citation_signature","submit_replication":"https://pith.science/pith/OYANIUEDQQTWHUKODID2IULYP6/action/replication_record"}},"created_at":"2026-07-04T14:56:13.282930+00:00","updated_at":"2026-07-04T14:56:13.282930+00:00"}