{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp09_archetype_breadth150_20260804","research_id":"eoa_inverse_innovation_exp09_light_prior_art_20260804","cell_id":"preimage_set_characterization__chemistry_materials","search_lanes":{"direct_problem_and_intervention":{"queries":["battery electrode slurry same viscosity different coating behavior mixing process rheology","\"battery slurry\" \"viscosity\" \"not sufficient\" coating","electrode slurry identical viscosity different rheology coating"],"source_ids":["SRC1","SRC2"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["electrode slurry process history same viscosity thixotropy","battery slurry mixing sequence viscosity microstructure coating study","battery electrode slurry mixing order aging rheology coating defects"],"source_ids":["SRC1","SRC2","SRC4"],"no_result_note":null},"products_practices_and_standards":{"queries":["battery slurry rotational viscometer apparent viscosity standard ASTM D2196","battery slurry rheometer quality control single point viscosity coating","battery slurry quality control rheology pass fail"],"source_ids":["SRC2","SRC3"],"no_result_note":null},"component_combination":{"queries":["battery electrode slurry design of experiments viscosity mixing parameters coating quality","battery slurry quality by design design space rheology mixing solids content","\"preimage\" battery slurry viscosity","\"inverse design\" electrode slurry viscosity","\"design space\" electrode slurry rheology coating"],"source_ids":["SRC1","SRC2","SRC4"],"no_result_note":"No retained source described a solver-backed, governed preimage of an existing viscosity pass band that jointly registers preparation-state collisions, boundary membership, tested versus interpolated versus unknown coverage, downstream drawdown differences, and a non-equivalence guardrail."}},"sources":[{"source_id":"SRC1","title":"Viscosity Analysis of Battery Electrode Slurry","publisher":"Polymers (MDPI), hosted by PubMed Central","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC8623788/","source_type":"PRIMARY_RESEARCH","claims_supported":["Spindle speed, component ratios, and mixing time were experimentally examined as determinants of electrode-slurry viscosity.","The slurries were shear-thinning.","Micrographs showed that internal component arrangement continued changing even when viscosity had stabilized, so stable viscosity was insufficient evidence that slurry microstructure had reached steady state."]},{"source_id":"SRC2","title":"Rheological and Thermogravimetric Characterization on Battery Electrode Slurry to Optimize Manufacturing Process","publisher":"TA Instruments","url":"https://www.tainstruments.com/applications-notes/rheological-and-thermogravimetric-characterization-on-battery-electrode-slurry-to-optimize-manufacturing-process/","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["The application note explicitly states that single-point viscometer analysis is insufficient to represent slurry flow behavior.","It states that two formulations can have the same viscosity at one shear rate yet differ substantially in stability and coating performance.","It recommends viscosity measurements over a process-relevant shear-rate range and identifies viscoelasticity and thixotropy as useful supplemental measures."]},{"source_id":"SRC3","title":"ASTM D2196-20(2026): Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer","publisher":"ASTM International","url":"https://store.astm.org/standards/d2196","source_type":"OFFICIAL_STANDARD","claims_supported":["The standard covers apparent viscosity, shear thinning, and thixotropic properties of non-Newtonian materials measured with a rotational viscometer.","Its significance statement says measurements at two or more rotational speeds characterize a non-Newtonian material better than a single viscosity measurement.","It provides a controlled measurement framework but assigns safety, health, environmental, and regulatory applicability to the user."]},{"source_id":"SRC4","title":"Impact of Formulation and Slurry Properties on Lithium-ion Electrode Manufacturing","publisher":"Batteries & Supercaps / Wiley-VCH","url":"https://wrap.warwick.ac.uk/id/eprint/182109/7/WRAP-impact-formulation-slurry-properties-lithium-ion-electrode-manufacturing-2023.pdf","source_type":"PRIMARY_RESEARCH","claims_supported":["A mixture-process design of experiments varied four formulation features, solids fraction, and coating speed and measured viscosity, coating properties, adhesion, conductivity, and cell capacity.","Regression and Gaussian-process models predicted responses across the bounded formulation design space, including maps over possible component combinations.","The study is close forward-mapping prior art, but it does not govern the inverse set of all preparation states satisfying an existing viscosity release band or classify collision, boundary, and unknown regions."]}],"problem_evidence":{"status":"SUPPORTED","finding":"The problem is directly visible. Primary research shows that slurry microstructure can continue changing after viscosity has stabilized, while first-party application evidence explicitly reports that two formulations may share one single-point viscosity yet differ in stability and coating performance. The standard also states that multiple rotational speeds better characterize non-Newtonian materials than one point. These sources support the proposed many-to-one information-loss mechanism, although collision frequency for the declared formulation and production line remains unmeasured.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"closest_prior_art":[{"name":"Mixture-process DoE and machine-learning maps for slurry and electrode responses","source_ids":["SRC4"],"overlap":"Defines a bounded formulation/process design space, samples it systematically, models viscosity and multiple downstream responses, predicts across possible combinations, and reports model uncertainty or performance.","remaining_difference":"It is organized as forward prediction and optimization. It does not designate the inverse set satisfying a pre-existing viscosity band as the governed artifact, enumerate same-output collision groups, register membership boundaries, distinguish tested/interpolated/unknown preimage regions, or impose a release-use non-equivalence rule."},{"name":"Multi-rate rheology workflow replacing single-point slurry viscosity analysis","source_ids":["SRC2","SRC3"],"overlap":"Directly recognizes the inadequacy of one viscosity point and supplements it with shear-dependent viscosity, thixotropy, viscoelasticity, or other characterization relevant to coating performance.","remaining_difference":"It expands the measured output panel but does not backsolve preparation variables, characterize the complete bounded preimage of the original pass band, maintain a coverage ledger, or compare collision groups through standardized drawdowns."},{"name":"Experimental comparison of viscosity stabilization and evolving slurry microstructure","source_ids":["SRC1"],"overlap":"Demonstrates experimentally that an apparently stable viscosity result need not identify a stable internal slurry state and varies several preparation and composition factors.","remaining_difference":"It studies selected forward factor effects and does not construct or govern all bounded preparation-state regions compatible with a specified release-band predicate."}],"prior_art_disposition":"ADJACENT_PRIOR_ART","contrastive_claim_remaining":"For one fixed formulation, mixer, measurement protocol, and approved input envelope, the distinct testable contribution is to make the characterized inverse set of preparation states satisfying the existing single-point viscosity pass band the governed artifact: explicitly recording multiplicity, membership boundaries, tested/interpolated/unknown coverage, and downstream differences while prohibiting users from treating membership as proof of unique cause, equivalent microstructure, coatability, or release suitability.","contrastive_claim_falsifier":"The contrastive claim is falsified by finding an established battery-slurry workflow that already combines bounded inverse enumeration or backsolve of all pass-band-compatible preparation states with explicit collision groups, boundary and unknown-region accounting, downstream discrimination, and the same non-equivalence release guardrail. Experimentally, it is falsified if independent analysts cannot reproduce membership and coverage labels or held-out passing states repeatedly fall outside characterized regions without being correctly classified as unknown.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The search covered direct proposal language, rheology and process-history synonyms, a current rotational-viscometer standard, commercial QC practice, DoE/design-space terminology, inverse-design terminology, and component combinations. Exactly four opened sources from four publisher contexts were retained, including two primary studies, one official standard, and one first-party source.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"The evidence directly supports non-uniqueness at screening resolution: stable or identical single-point viscosity can conceal different microstructure, stability, or coating performance, and non-Newtonian slurry characterization benefits from more than one measurement condition.","source_ids":["SRC1","SRC2","SRC3"]},"distinct_testable_claim":{"status":"PASS","rationale":"Although DoE design-space mapping and richer rheology panels are close, the retained sources do not combine them into a governed inverse set for the existing release band with collision, boundary, completeness, and interpretation controls. The remaining claim has explicit literature and experimental falsifiers.","source_ids":["SRC1","SRC2","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"The proposed 24-microbatch study is confined to one formulation and approved laboratory envelope, uses randomized runs and blinded duplicate measurements, adds one drawdown and one rheology trace, and reserves six states for held-out membership and unknown-region validation. It produces reviewable artifacts without changing production specifications or dispositions.","source_ids":["SRC1","SRC2","SRC4"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"The authorized first step is a non-production bench study using qualified materials within existing laboratory and EHS limits. QC retains method control, quality retains disposition authority, and production release criteria remain unchanged. ASTM D2196 assigns safety and regulatory applicability to the user but presents no inherent stop to controlled rotational-viscometer work.","source_ids":["SRC2","SRC3"]}},"screen_survival":true,"world_novelty_boundary":"This bounded public-web screen supports only an adjacent-prior-art disposition for the retained sources. It does not establish world novelty, patentability, freedom to operate, market size, expert acceptance, completeness of indexed literature, or realized value. Patents, paywalled literature, internal manufacturing procedures, supplier methods, and non-indexed practices could contain closer art."}