{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:SOOWMSRYD3N3K4GFUEOFJ346ZA","short_pith_number":"pith:SOOWMSRY","canonical_record":{"source":{"id":"2309.15725","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2023-09-27T15:32:38Z","cross_cats_sorted":[],"title_canon_sha256":"fa89669da8e9d9ed565d363015d6ff9b3249db838bcc7d9eedce58090f0c3409","abstract_canon_sha256":"147cfe8b408ee06374f5b743771360ef5b431a87326a2d1df17b7224e72a1ece"},"schema_version":"1.0"},"canonical_sha256":"939d664a381edbb570c5a11c54ef9ec826b9de590000f23bc3804b98f9095974","source":{"kind":"arxiv","id":"2309.15725","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.15725","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"arxiv_version","alias_value":"2309.15725v2","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.15725","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"pith_short_12","alias_value":"SOOWMSRYD3N3","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"pith_short_16","alias_value":"SOOWMSRYD3N3K4GF","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"pith_short_8","alias_value":"SOOWMSRY","created_at":"2026-07-05T06:55:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:SOOWMSRYD3N3K4GFUEOFJ346ZA","target":"record","payload":{"canonical_record":{"source":{"id":"2309.15725","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2023-09-27T15:32:38Z","cross_cats_sorted":[],"title_canon_sha256":"fa89669da8e9d9ed565d363015d6ff9b3249db838bcc7d9eedce58090f0c3409","abstract_canon_sha256":"147cfe8b408ee06374f5b743771360ef5b431a87326a2d1df17b7224e72a1ece"},"schema_version":"1.0"},"canonical_sha256":"939d664a381edbb570c5a11c54ef9ec826b9de590000f23bc3804b98f9095974","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:55:25.487245Z","signature_b64":"QG7U0kgKdOMKf3khin0m+6yDIMJ12ry4ZercOmgKC6IZcoq94kwn51Do/++Tm+a6vKuGCHoP1IGcUuaby4lPCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"939d664a381edbb570c5a11c54ef9ec826b9de590000f23bc3804b98f9095974","last_reissued_at":"2026-07-05T06:55:25.486785Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:55:25.486785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.15725","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":"2026-07-05T06:55:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ULkMnOP6u6luNbUDvjmAGXx+XLM74kAM4DuRnEL4YCpXDetvxqiK4a7gNB0IOwRVYvOj815Y6piirz/hVZyECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:55:54.207390Z"},"content_sha256":"59dc233577f4aafe8bc1b4165b2318d43cad07a804994b2a423a363c1e520c21","schema_version":"1.0","event_id":"sha256:59dc233577f4aafe8bc1b4165b2318d43cad07a804994b2a423a363c1e520c21"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:SOOWMSRYD3N3K4GFUEOFJ346ZA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"S-band acoustoelectric amplifier utilizing an ultra-high thermal conductivity heterostructure for low self-heating","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Brandon Smith, Josh Montoya, Lisa Hackett, Matt Eichenfield, Michael Miller, Robert Reyna, Roy H. Olsson III, Scott Weatherrend, Shawn Arterburn, Steven Santillan, Thomas A. Friedmann, Xingyu Du","submitted_at":"2023-09-27T15:32:38Z","abstract_excerpt":"Here we report on an acoustoelectric slab waveguide heterostructure for phonon amplification using a thin Al$_{0.58}$Sc$_{0.42}$N film grown directly on a 4H-SiC substrate with an ultra-thin In$_{0.53}$Ga$_{0.47}$As epitaxial film heterogeneously integrated onto the surface of the Al$_{0.58}$Sc$_{0.42}$N. The aluminum scandium nitride film grown directly on silicon carbide enables a thin (1 micron thick) piezoelectric film to be deposited on a thermally conductive bulk substrate (370 W/m-K for 4H-SiC), enabling negligible self-heating when combined with the In$_{0.53}$Ga$_{0.47}$As semiconduct"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.15725","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2309.15725/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:55:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wd1Z12pBWQfhKOaBKQCw3Q7gW8lnsfL8hNjkAcVKyD8bEwpWyflxDyWzRspYyVxsf/8TUxgI6JfCQCFpoMnABg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:55:54.208021Z"},"content_sha256":"96a19e13f8da2f60b9446dd0f0e7ec8673559a9af7a09b980de617ec8de5416b","schema_version":"1.0","event_id":"sha256:96a19e13f8da2f60b9446dd0f0e7ec8673559a9af7a09b980de617ec8de5416b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SOOWMSRYD3N3K4GFUEOFJ346ZA/bundle.json","state_url":"https://pith.science/pith/SOOWMSRYD3N3K4GFUEOFJ346ZA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SOOWMSRYD3N3K4GFUEOFJ346ZA/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":"2026-07-07T06:55:54Z","links":{"resolver":"https://pith.science/pith/SOOWMSRYD3N3K4GFUEOFJ346ZA","bundle":"https://pith.science/pith/SOOWMSRYD3N3K4GFUEOFJ346ZA/bundle.json","state":"https://pith.science/pith/SOOWMSRYD3N3K4GFUEOFJ346ZA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SOOWMSRYD3N3K4GFUEOFJ346ZA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SOOWMSRYD3N3K4GFUEOFJ346ZA","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":"147cfe8b408ee06374f5b743771360ef5b431a87326a2d1df17b7224e72a1ece","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2023-09-27T15:32:38Z","title_canon_sha256":"fa89669da8e9d9ed565d363015d6ff9b3249db838bcc7d9eedce58090f0c3409"},"schema_version":"1.0","source":{"id":"2309.15725","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.15725","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"arxiv_version","alias_value":"2309.15725v2","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.15725","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"pith_short_12","alias_value":"SOOWMSRYD3N3","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"pith_short_16","alias_value":"SOOWMSRYD3N3K4GF","created_at":"2026-07-05T06:55:25Z"},{"alias_kind":"pith_short_8","alias_value":"SOOWMSRY","created_at":"2026-07-05T06:55:25Z"}],"graph_snapshots":[{"event_id":"sha256:96a19e13f8da2f60b9446dd0f0e7ec8673559a9af7a09b980de617ec8de5416b","target":"graph","created_at":"2026-07-05T06:55:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2309.15725/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Here we report on an acoustoelectric slab waveguide heterostructure for phonon amplification using a thin Al$_{0.58}$Sc$_{0.42}$N film grown directly on a 4H-SiC substrate with an ultra-thin In$_{0.53}$Ga$_{0.47}$As epitaxial film heterogeneously integrated onto the surface of the Al$_{0.58}$Sc$_{0.42}$N. The aluminum scandium nitride film grown directly on silicon carbide enables a thin (1 micron thick) piezoelectric film to be deposited on a thermally conductive bulk substrate (370 W/m-K for 4H-SiC), enabling negligible self-heating when combined with the In$_{0.53}$Ga$_{0.47}$As semiconduct","authors_text":"Brandon Smith, Josh Montoya, Lisa Hackett, Matt Eichenfield, Michael Miller, Robert Reyna, Roy H. Olsson III, Scott Weatherrend, Shawn Arterburn, Steven Santillan, Thomas A. Friedmann, Xingyu Du","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2023-09-27T15:32:38Z","title":"S-band acoustoelectric amplifier utilizing an ultra-high thermal conductivity heterostructure for low self-heating"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.15725","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":"sha256:59dc233577f4aafe8bc1b4165b2318d43cad07a804994b2a423a363c1e520c21","target":"record","created_at":"2026-07-05T06:55:25Z","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":"147cfe8b408ee06374f5b743771360ef5b431a87326a2d1df17b7224e72a1ece","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2023-09-27T15:32:38Z","title_canon_sha256":"fa89669da8e9d9ed565d363015d6ff9b3249db838bcc7d9eedce58090f0c3409"},"schema_version":"1.0","source":{"id":"2309.15725","kind":"arxiv","version":2}},"canonical_sha256":"939d664a381edbb570c5a11c54ef9ec826b9de590000f23bc3804b98f9095974","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"939d664a381edbb570c5a11c54ef9ec826b9de590000f23bc3804b98f9095974","first_computed_at":"2026-07-05T06:55:25.486785Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:55:25.486785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QG7U0kgKdOMKf3khin0m+6yDIMJ12ry4ZercOmgKC6IZcoq94kwn51Do/++Tm+a6vKuGCHoP1IGcUuaby4lPCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:55:25.487245Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.15725","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59dc233577f4aafe8bc1b4165b2318d43cad07a804994b2a423a363c1e520c21","sha256:96a19e13f8da2f60b9446dd0f0e7ec8673559a9af7a09b980de617ec8de5416b"],"state_sha256":"b185ce191acbac1b56dec0f63796ea5a19df8290efb133f70cafd380977432d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sIGHdeK9vNCxdJ4za7y0Iu/qFrIQJMND6GOBLPi6jZy8SO1l6CTox7O/+pKsTzpT6jiNOgr+Cbum9ij0spHdCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T06:55:54.211028Z","bundle_sha256":"878e8ad8a8045a5432034de2f34f77003451976f413d85245b20ea981618fc99"}}