{"paper":{"title":"Performance Characterization of Frequency-Selective Wireless Power Transfer Toward Scalable Untethered Magnetic Actuation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"The number of untethered magnetic actuators that can be independently controlled by frequency-selective wireless power transfer scales primarily with resonator Q-factor.","cross_cats":["cs.RO","cs.SY"],"primary_cat":"eess.SY","authors_text":"Gabriel Cooper, Xiaolong Liu","submitted_at":"2026-04-13T15:57:20Z","abstract_excerpt":"Frequency-selective wireless power transfer provides a feasible route to enable independent actuation and control of multiple untethered robots in a common workspace; however, the scalability remains unquantified, particularly the maximum number of resonators that can be reliably addressed within a given frequency bandwidth. To address this, we formulate the relationship between resonator quality factor (Q-factor) and the number of individually addressable inductor-capacitor (LC) resonant energy harvesters within a fixed radio-frequency (RF) spectrum, and we convert selectively activated harve"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We theoretically proved and experimentally demonstrated that scalability depends primarily on the Q-factor. For this proof-of-concept study, we define effective series resistance as a function of frequency allocating bandwidths to discrete actuators.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That defining effective series resistance as a function of frequency cleanly allocates non-overlapping bandwidths to each actuator without unintended cross-triggering or unmodeled losses dominating at scale.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Scalability of frequency-selective wireless power transfer for untethered magnetic actuation depends primarily on resonator Q-factor, with theoretical relation and experimental validation using three independent actuators at distinct frequencies.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"The number of untethered magnetic actuators that can be independently controlled by frequency-selective wireless power transfer scales primarily with resonator Q-factor.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"a7b616c27180dedb25d2672fa5aa6368e69bb686cd83610e6462c845cfed7de7"},"source":{"id":"2604.11645","kind":"arxiv","version":2},"verdict":{"id":"a97b63e5-1063-4297-90b5-cd7ff22e54d9","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T14:59:06.739010Z","strongest_claim":"We theoretically proved and experimentally demonstrated that scalability depends primarily on the Q-factor. For this proof-of-concept study, we define effective series resistance as a function of frequency allocating bandwidths to discrete actuators.","one_line_summary":"Scalability of frequency-selective wireless power transfer for untethered magnetic actuation depends primarily on resonator Q-factor, with theoretical relation and experimental validation using three independent actuators at distinct frequencies.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That defining effective series resistance as a function of frequency cleanly allocates non-overlapping bandwidths to each actuator without unintended cross-triggering or unmodeled losses dominating at scale.","pith_extraction_headline":"The number of untethered magnetic actuators that can be independently controlled by frequency-selective wireless power transfer scales primarily with resonator Q-factor."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.11645/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"}