{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","research_id":"eoa_inverse_innovation_exp12_light_screen_20260805","cell_id":"versioning_and_quality_discrimination__chemistry_materials","search_lanes":{"direct_problem_and_intervention":{"queries":["electroless copper bath copper complexing agents free copper ion concentration deposition rate monitoring","electroless copper bath analysis free copper complexed copper ligand exchange"],"source_ids":["SRC1","SRC4"],"no_result_note":"No exact three-lane colorimetric lability strip for electroless-copper baths was found; this phrase miss is not treated as evidence of novelty."},"synonyms_and_historical_terms":{"queries":["copper lability measurement multiple chelators ligand exchange colorimetric sensor array","diffusive gradients in thin films DGT copper labile species binding gel speciation"],"source_ids":["SRC2","SRC3"],"no_result_note":null},"products_practices_and_standards":{"queries":["electroless copper bath control analysis total copper complexant standard","analysis copper ion complexing agent copper plating baths"],"source_ids":["SRC1","SRC4"],"no_result_note":null},"component_combination":{"queries":["different binding phases DGT copper speciation multiple devices","colorimetric diffusive gradients thin films copper hydrogel binding gel"],"source_ids":["SRC2","SRC3"],"no_result_note":null}},"sources":[{"source_id":"SRC1","title":"Investigation on Deposition Rate of Copper from Electroless Plating Baths","publisher":"Surface Finishing Society of Japan","url":"https://www.jstage.jst.go.jp/article/sfj1950/21/1/21_1_20/_article","source_type":"PRIMARY_RESEARCH","claims_supported":["Electroless-copper deposition and bath decomposition depend on bath composition and operating conditions.","Tartrate- and EDTA-complexed baths exhibit different dependencies on copper, formaldehyde, temperature, and pH."]},{"source_id":"SRC2","title":"Metal speciation measurement by diffusive gradients in thin films technique with different binding phases","publisher":"Elsevier, Analytica Chimica Acta","url":"https://www.sciencedirect.com/science/article/abs/pii/S0003267004015430","source_type":"PRIMARY_RESEARCH","claims_supported":["DGT devices having binding phases of different strengths can measure different labile fractions of copper.","The mechanism includes diffusion, complex dissociation, ligand substitution at an immobilized binding phase, and exclusion of inert complexes.","The tested binding phases form an ordered copper-binding-strength series, closely overlapping the proposal's threshold-ladder mechanism."]},{"source_id":"SRC3","title":"Direct colorimetric detection of copper(II) ions in sampling using diffusive gradients in thin-films","publisher":"Elsevier, Analytica Chimica Acta; indexed by the U.S. National Library of Medicine","url":"https://pubmed.ncbi.nlm.nih.gov/20152264/","source_type":"PRIMARY_RESEARCH","claims_supported":["A copper-binding chromophore was immobilized on resin beads in a DGT binding disc.","Captured copper was quantified directly by color using imaging densitometry or spectrophotometry.","This establishes the feasibility of combining copper chelation, immobilization, diffusion-controlled sampling, and colorimetric readout."]},{"source_id":"SRC4","title":"US8118988B2 — Analysis of copper ion and complexing agent in copper plating baths","publisher":"United States patent record via Google Patents","url":"https://patents.google.com/patent/US8118988B2/en","source_type":"OTHER","claims_supported":["Copper-plating-bath control can separately determine total copper and free or total bath complexing agent.","The method uses a stronger complexing agent to displace copper from bath complexes and identifies endpoints through a free-Cu(II)-responsive measurement.","The patent calls free bath complexing-agent concentration an important control parameter for alkaline copper plating baths, showing that total copper alone is not the only relevant bath-control quantity."]}],"problem_evidence":{"status":"PARTLY_SUPPORTED","finding":"The problem is visible at a coarse level: electroless-copper performance depends on complexant identity and bath conditions, plating-bath practice separately measures total copper and free complexant, and established DGT research shows that copper-complex populations can yield different operationally labile fractions. The retained sources do not directly demonstrate the proposal's narrower assertion that matched-total-copper electroless baths routinely differ in exchangeable-copper fraction or that such differences independently predict witness-coupon initiation, continuity, or roughness.","source_ids":["SRC1","SRC2","SRC4"]},"closest_prior_art":[{"name":"Copper speciation by DGT devices with different-strength binding phases","source_ids":["SRC2"],"overlap":"Directly implements diffusion-controlled exposure of copper complexes to immobilized binding phases with ordered binding strengths; complex dissociation and ligand substitution determine which operationally labile fraction is accumulated.","remaining_difference":"The reported devices were separate DGT samplers for natural waters, not three isolated capillary lanes in one rapid electroless-bath strip, and did not compare their pattern with plating coupons."},{"name":"Direct colorimetric copper DGT binding phase","source_ids":["SRC3"],"overlap":"Combines an immobilized copper chelator/chromophore, diffusion-controlled sampling, retained colored copper, and optical quantification.","remaining_difference":"It uses one binding chemistry rather than three exchange thresholds and does not target electroless-copper bath control."},{"name":"Strong-ligand displacement and free-complexant analysis for copper plating baths","source_ids":["SRC4"],"overlap":"Applies competitive copper complexation to distinguish total copper from another coordination-related bath-control parameter in plating-bath samples.","remaining_difference":"It is a titration/electrode method for copper and bath complexant concentrations, not a passive multi-threshold lability fingerprint or coupon-outcome discriminator."}],"prior_art_disposition":"SUBSTANTIAL_COLLISION","contrastive_claim_remaining":"In an electroless-copper matrix, a single mechanically split strip containing three simultaneously exposed, isolated, immobilized colorimetric binding phases with preregistered exchange thresholds will reproducibly distinguish matched-total-copper bath states and discriminate controlled witness-coupon outcomes better than total copper or any one threshold alone. The remaining distinction is principally the integrated three-lane format, electroless-bath application, and incremental coupon-outcome discrimination; the underlying differential-binding lability mechanism and colorimetric copper capture are already disclosed.","contrastive_claim_falsifier":"Reject the remaining claim if blinded matched-total-copper samples with controlled ligand or aging differences do not produce reproducible monotonic tier separation, if tier contrasts add no discrimination of coupon outcomes beyond total copper and the best single pad, or if pH, reductant, color, wicking, or assay-induced redistribution explains the apparent pattern.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered the direct application, lability/speciation terminology, plating-bath analytical practice, and the combination of differential binding phases with immobilized colorimetric copper capture. Four opened sources from multiple publishers include three primary research articles and a plating-bath patent.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"The evidence partly supports a coordination-sensitive control gap: bath complexants and operating conditions affect electroless deposition, free complexant is treated as a separate control parameter, and copper lability can depend on binding-phase competition. Direct proof of the full electroless-bath failure mode remains for the next test.","source_ids":["SRC1","SRC2","SRC4"]},"distinct_testable_claim":{"status":"PASS","rationale":"Despite substantial mechanism overlap, the residual claim is falsifiable: simultaneous three-tier responses must add reproducible discrimination of matched-total-copper bath states and coupon outcomes beyond total copper and any single pad.","source_ids":["SRC2","SRC3","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"The proposed blinded 18-sample bench experiment is bounded and can compare monotonicity, replication, interference, total-copper baselines, single-pad baselines, and coupon outcomes without changing a production bath. Prior DGT studies support testing differential binding and direct color response at bench scale.","source_ids":["SRC2","SRC3"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"No obvious categorical stop appears for laboratory evaluation using synthetic standards and retained aliquots under the site's chemical-safety authority. High-pH bath chemistry, complexants, reductants, leaking pads, and copper-bearing waste require approved containment, PPE, ventilation, and disposal; the strip must not control production release or alter the live bath.","source_ids":["SRC1","SRC4"]}},"screen_survival":false,"world_novelty_boundary":"This bounded four-source screen found substantial collision with established differential-binding DGT copper speciation and immobilized colorimetric copper capture. It cannot establish world novelty, patentability, freedom to operate, market size, expert acceptance, prevalence of the proposed bath failure mode, or realized process value."}