{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:7TDTIG3KEPOKB5IIY2ZJF6QCN5","short_pith_number":"pith:7TDTIG3K","canonical_record":{"source":{"id":"1204.3011","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-04-13T14:32:00Z","cross_cats_sorted":[],"title_canon_sha256":"1292f2098f7bf9024b1e0bfb3bd56c2906365583d5e717b7a2409261a2839520","abstract_canon_sha256":"ab16b1ef26190fbfe9ba8ba9dfb81f8569ee1ccf4f9d92abd5991d8573db7e71"},"schema_version":"1.0"},"canonical_sha256":"fcc7341b6a23dca0f508c6b292fa026f78dd428a579784f7cc1044ad6406cc6b","source":{"kind":"arxiv","id":"1204.3011","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3011","created_at":"2026-05-18T03:57:54Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3011v1","created_at":"2026-05-18T03:57:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3011","created_at":"2026-05-18T03:57:54Z"},{"alias_kind":"pith_short_12","alias_value":"7TDTIG3KEPOK","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7TDTIG3KEPOKB5II","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7TDTIG3K","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:7TDTIG3KEPOKB5IIY2ZJF6QCN5","target":"record","payload":{"canonical_record":{"source":{"id":"1204.3011","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-04-13T14:32:00Z","cross_cats_sorted":[],"title_canon_sha256":"1292f2098f7bf9024b1e0bfb3bd56c2906365583d5e717b7a2409261a2839520","abstract_canon_sha256":"ab16b1ef26190fbfe9ba8ba9dfb81f8569ee1ccf4f9d92abd5991d8573db7e71"},"schema_version":"1.0"},"canonical_sha256":"fcc7341b6a23dca0f508c6b292fa026f78dd428a579784f7cc1044ad6406cc6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:57:54.206107Z","signature_b64":"rfwU0YvAfiD8uacGZMLoCM5RT6YXq6kedB+CRvBr1DEJGU9R3iPa+U97AOiakRHA2Xt8sIzxiYHlhZXx1wziBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcc7341b6a23dca0f508c6b292fa026f78dd428a579784f7cc1044ad6406cc6b","last_reissued_at":"2026-05-18T03:57:54.205235Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:57:54.205235Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.3011","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":"2026-05-18T03:57:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kl9F17WcUTkvqoKxPgpZJEdX2PChFyYSbFFYeiQ+34aoLRqYLnFxYPb/tFZCADjzVZfJzUMkfshARbEHURCiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T18:14:08.159022Z"},"content_sha256":"883e7d03898529d0fdaefc543fed2ee010395c426c234cd831167d9b4893bf5d","schema_version":"1.0","event_id":"sha256:883e7d03898529d0fdaefc543fed2ee010395c426c234cd831167d9b4893bf5d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:7TDTIG3KEPOKB5IIY2ZJF6QCN5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Adaptive Q control for Tapping-mode Nano-scanning Using a Piezo-actuated Bimorph Probe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Aydin Varol, Cagatay Basdogan, Ihsan Gunev, Sertac Karaman","submitted_at":"2012-04-13T14:32:00Z","abstract_excerpt":"A new approach, called Adaptive Q-control, for tapping-mode Atomic Force Microscopy (AFM) is introduced and implemented on a home-made AFM set-up utilizing a Laser Doppler Vibrometer (LDV) and a piezo-actuated bimorph probe. In the standard Q-control, the effective Q-factor of the scanning probe is adjusted prior to the scanning depending on the application. However, there is a trade-off in setting the effective Q-factor of an AFM probe. The Q-factor is either increased to reduce the tapping forces or decreased to increase the maximum achievable scan speed. Realizing these two benefits simulta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3011","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":"2026-05-18T03:57:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mt5kb/JNh1jxR6D+7ueBidp5OtzBArNhEp7VzvVCUtAoj84lVT4Qiq6R+jE8IApzrzUPnAHgLCBdQU3dcjdXCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T18:14:08.159381Z"},"content_sha256":"909b8782467ec2201c95ef7d9bdaaa6968249f8f5ab0e2b1538205b6e63f1465","schema_version":"1.0","event_id":"sha256:909b8782467ec2201c95ef7d9bdaaa6968249f8f5ab0e2b1538205b6e63f1465"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7TDTIG3KEPOKB5IIY2ZJF6QCN5/bundle.json","state_url":"https://pith.science/pith/7TDTIG3KEPOKB5IIY2ZJF6QCN5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7TDTIG3KEPOKB5IIY2ZJF6QCN5/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":"2026-06-23T18:14:08Z","links":{"resolver":"https://pith.science/pith/7TDTIG3KEPOKB5IIY2ZJF6QCN5","bundle":"https://pith.science/pith/7TDTIG3KEPOKB5IIY2ZJF6QCN5/bundle.json","state":"https://pith.science/pith/7TDTIG3KEPOKB5IIY2ZJF6QCN5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7TDTIG3KEPOKB5IIY2ZJF6QCN5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7TDTIG3KEPOKB5IIY2ZJF6QCN5","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":"ab16b1ef26190fbfe9ba8ba9dfb81f8569ee1ccf4f9d92abd5991d8573db7e71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-04-13T14:32:00Z","title_canon_sha256":"1292f2098f7bf9024b1e0bfb3bd56c2906365583d5e717b7a2409261a2839520"},"schema_version":"1.0","source":{"id":"1204.3011","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3011","created_at":"2026-05-18T03:57:54Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3011v1","created_at":"2026-05-18T03:57:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3011","created_at":"2026-05-18T03:57:54Z"},{"alias_kind":"pith_short_12","alias_value":"7TDTIG3KEPOK","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7TDTIG3KEPOKB5II","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7TDTIG3K","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:909b8782467ec2201c95ef7d9bdaaa6968249f8f5ab0e2b1538205b6e63f1465","target":"graph","created_at":"2026-05-18T03:57:54Z","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":"A new approach, called Adaptive Q-control, for tapping-mode Atomic Force Microscopy (AFM) is introduced and implemented on a home-made AFM set-up utilizing a Laser Doppler Vibrometer (LDV) and a piezo-actuated bimorph probe. In the standard Q-control, the effective Q-factor of the scanning probe is adjusted prior to the scanning depending on the application. However, there is a trade-off in setting the effective Q-factor of an AFM probe. The Q-factor is either increased to reduce the tapping forces or decreased to increase the maximum achievable scan speed. Realizing these two benefits simulta","authors_text":"Aydin Varol, Cagatay Basdogan, Ihsan Gunev, Sertac Karaman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-04-13T14:32:00Z","title":"Adaptive Q control for Tapping-mode Nano-scanning Using a Piezo-actuated Bimorph Probe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3011","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":"sha256:883e7d03898529d0fdaefc543fed2ee010395c426c234cd831167d9b4893bf5d","target":"record","created_at":"2026-05-18T03:57:54Z","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":"ab16b1ef26190fbfe9ba8ba9dfb81f8569ee1ccf4f9d92abd5991d8573db7e71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2012-04-13T14:32:00Z","title_canon_sha256":"1292f2098f7bf9024b1e0bfb3bd56c2906365583d5e717b7a2409261a2839520"},"schema_version":"1.0","source":{"id":"1204.3011","kind":"arxiv","version":1}},"canonical_sha256":"fcc7341b6a23dca0f508c6b292fa026f78dd428a579784f7cc1044ad6406cc6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fcc7341b6a23dca0f508c6b292fa026f78dd428a579784f7cc1044ad6406cc6b","first_computed_at":"2026-05-18T03:57:54.205235Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:57:54.205235Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rfwU0YvAfiD8uacGZMLoCM5RT6YXq6kedB+CRvBr1DEJGU9R3iPa+U97AOiakRHA2Xt8sIzxiYHlhZXx1wziBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:57:54.206107Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.3011","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:883e7d03898529d0fdaefc543fed2ee010395c426c234cd831167d9b4893bf5d","sha256:909b8782467ec2201c95ef7d9bdaaa6968249f8f5ab0e2b1538205b6e63f1465"],"state_sha256":"d2c5aa2b028abfe2352a7f43b08804c7549c5810e8c688bdb554593c55371a89"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zL/M78tfC/JOZZbWIQ2aInyt37E5GAWtz+N/puNDmkqIGLzANOzGEP/xvsRl66vmv3nRA3ciwdV3ZyBp4s7oCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T18:14:08.161412Z","bundle_sha256":"693d01fa9ea6d055fadba238f10d4189368db719d9522bc489dfb147b7a3f131"}}