{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"versioning_and_quality_discrimination__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"versioning_and_quality_discrimination__chemistry_materials__CONSTRAINED_HIGH","decision":"PROPOSAL","abstention_reason":null,"proposal":{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"versioning_and_quality_discrimination__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"versioning_and_quality_discrimination__chemistry_materials__CONSTRAINED_HIGH","proposal_index":1,"version":0,"title":"Three-threshold ligand-exchange strip for electroless-copper bath lability","problem":"In an electroless-copper plating bath containing complexing ligands, equal total Cu(II) concentrations can coexist with different exchangeable-copper fractions. A bulk copper assay can therefore miss a bath state in which copper availability to the deposition reaction has changed, while assigning individual coordination species by full laboratory speciation is too elaborate for a sidecar process check.","actors":["Electroless-copper process owner","Bath operator or analytical chemist","Cu(II) populations with different ligand-exchange kinetics and binding strengths","Three-lane ligand-exchange assay strip","Plated witness coupons used only as an independent outcome reference"],"observable_state":"A retained bath sample passes its total-copper check, yet its three ligand-exchange pads produce a different ordered capture pattern from a reference bath; the hypothesized corresponding process signal is altered deposition initiation, continuity, or roughness on a controlled witness coupon.","consequence":"If exchangeable-copper drift remains unresolved, the operator may accept a bath that deposits poorly or make an unnecessary bulk-copper correction that does not address the coordination-state change.","affected_objective":"Discriminate copper-availability states relevant to repeatable electroless deposition without changing the production bath or requiring assignment of every dissolved complex.","intervention":"Split a fixed retained-sample aliquot mechanically into three equal, laterally isolated capillary lanes. Each lane terminates in a hydrogel pad containing an immobilized copper-binding chromophore, with ligand identity, ligand density, diffusion path, and local buffer capacity chosen to impose a low, intermediate, or high ligand-exchange threshold. Freely exchangeable Cu(II) is captured by the low-threshold pad; progressively less labile complexes contribute only to pads capable of overcoming greater kinetic and binding barriers. The ordered pad intensities, and differences between cumulative tiers, form a physical lability fingerprint. Hydrophobic dividers, immobilized ligands, equal-volume capillary stops, and a fixed endpoint quench prevent lateral transfer and continued equilibration from collapsing the tiers.","structural_mapping":[{"archetype_element":"Hidden valuation or type heterogeneity","domain_realization":"Copper is present in coordination populations whose exchangeability is hidden by a total-concentration measurement."},{"archetype_element":"Version dimension selection","domain_realization":"The varied dimensions are ligand-exchange strength, diffusion distance, ligand density, and local buffer capacity."},{"archetype_element":"Good–better–best quality ladder","domain_realization":"Low-, intermediate-, and high-extraction pads form an ordered ladder of access to increasingly inert copper complexes."},{"archetype_element":"Price-tier mapping","domain_realization":"The physical analogue of price is the kinetic and free-energy cost of releasing Cu(II) from its existing coordination environment and transporting it into an immobilized capture site."},{"archetype_element":"Self-selection menu","domain_realization":"Copper populations reveal exchangeability through which physical threshold lanes can capture them, without prior classification of each complex."},{"archetype_element":"Minimum viable base quality","domain_realization":"The lowest-threshold pad must still have adequate blank separation, copper selectivity, and capacity to measure the freely exchangeable fraction without exhausting or visibly bleeding."},{"archetype_element":"Arbitrage guardrail","domain_realization":"Isolated lanes, immobilized reagents, capillary volume stops, and endpoint quenching prevent copper captured under one threshold from migrating into another tier."},{"archetype_element":"Fairness and access constraint","domain_realization":"No tier is treated as a safety verdict or sole production-release criterion; all tiers remain transparent operational fractions rather than unsupported claims about named molecular species."}],"mechanism_mapping":[{"mechanism_slug":"good_better_best_tier_menu","role":"Creates three plainly ordered chemical-exchange thresholds rather than one undifferentiated copper response.","counterfactual_removal":"With only one pad, total response and lability distribution remain confounded."},{"mechanism_slug":"feature_gating_and_usage_limits","role":"Physical ligand and diffusion barriers gate access to capture sites according to exchangeability while finite pad capacity bounds each measurement.","counterfactual_removal":"If every lane presents the same unrestricted capture chemistry, the tier pattern collapses to replicated total-copper measurements."},{"mechanism_slug":"bundle_unbundle_menu","role":"The strip reports cumulative threshold responses that can be differenced into operationally free, more labile, and less labile contributions.","counterfactual_removal":"Without separable lane responses, the distinct coordination populations cannot be contrasted within the same sampled state."}],"causal_chain":["A metered retained-bath aliquot divides into three equal capillary lanes.","Each lane exposes the aliquot to a distinct immobilized ligand-exchange and transport threshold.","Cu(II) populations exchange from existing ligands only where the local capture reaction and exposure time can overcome their binding and kinetic barriers.","Captured Cu(II) forms an immobilized colored complex while uncaptured complexes remain outside the pad or leave with the waste wick.","Physical lane isolation and endpoint quenching preserve the three nonequivalent capture states.","Ordered pad intensities provide a lability fingerprint even when total Cu(II) is held constant.","Comparison with independently plated witness coupons tests whether that fingerprint discriminates deposition-relevant bath states."],"baseline":"Continue the existing combination of a bulk total-copper assay and periodic controlled witness-coupon plating; neither is replaced during evaluation.","nearest_rivals":["A single-ligand colorimetric copper strip, which is simpler but may conflate total concentration with exchangeability","Electrochemical measurements of available copper under controlled potential and hydrodynamic conditions","Sequential batch extraction with several soluble chelators followed by conventional copper measurement","Chromatographic or spectroscopic laboratory speciation of bath samples","Direct reliance on standardized witness-coupon deposition outcomes"],"remaining_contrastive_claim":"Conditional on copper exchangeability contributing to deposition behavior, matched-total-copper samples should produce distinguishable ordered tier patterns, and those contrasts should discriminate witness-coupon outcomes that total copper or any single pad does not; failure of that comparison rejects the proposed advantage.","authority_safety":{"decision_authority":"The plating-process owner may authorize analytical evaluation, while the site chemical-safety authority controls sample handling, reagent compatibility, and disposal; neither authority delegates production-release decisions to the strip during the first step.","authorized_first_step":"Use only synthetic standards and retained, labeled bath aliquots in a ventilated laboratory setup to test passive strip response alongside the established assays and separately prepared witness coupons.","excluded_actions":["Do not immerse the prototype or its reagents in the production tank.","Do not dose or otherwise alter the live bath based on a strip result.","Do not use the strip as the sole bath-release, worker-safety, or environmental-compliance measurement.","Do not infer named coordination species from threshold colors without independent chemical confirmation.","Do not handle bath reductants, high-pH solutions, or copper-bearing waste outside approved containment, protective equipment, and disposal procedures."],"halt_rollback":"Stop the evaluation if pads leak, reagents migrate between lanes, sample chemistry produces gas or heat, tier order reverses without explanation, or controls show unacceptable interference. Seal and dispose of prototypes and aliquots through the approved copper-bearing chemical-waste route, record the failure, and retain the existing total-copper and witness-coupon baseline unchanged."},"negative_tests":{"strongest_counterevidence":"Matched-total-copper baths with deliberately varied ligand composition or aging produce the same tier pattern despite different controlled coupon outcomes, or the tier pattern changes only with total copper, pH, temperature, or color interference.","problem_falsifier":"Across controlled samples, deposition behavior is adequately accounted for by total copper, pH, temperature, reductant state, and established additive measurements, with no residual association attributable to operational copper lability.","intervention_falsifier":"Known labile and kinetically inert copper complexes do not yield the preregistered monotonic separation across pads, replicate strips disagree beyond the analytical acceptance limit, or the pads themselves perturb sample equilibria enough to erase the initial state.","risks":["The strongest pad may strip copper so aggressively that it reports assay-induced redistribution rather than the original bath state.","Bath color, particles, surfactants, reductant, pH, or competing metals may alter wicking or chromophore response.","Unequal lane volumes or pad aging may mimic a lability difference.","Cumulative tier subtraction may amplify measurement error.","Operational fractions may be mistaken for identified molecular species.","Copper-binding reagents or retained bath samples may create exposure and disposal hazards."]},"next_evidence_step":"Fabricate one three-lane geometry with three candidate immobilized-ligand thresholds and test it in triplicate on a blinded 18-sample bench set: blanks plus synthetic bath matrices spanning two fixed total-copper levels and three controlled ligand-composition or aging states, with interference controls. Pre-register lane-volume balance, blank separation, monotonic response to reference complexes, replicate agreement, and the comparison against total copper and controlled witness-coupon observations; make no production decision from the results.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Not assessed against other proposals because runtime isolation forbids inspecting them; this candidate is derived only from the supplied archetype and chemistry/materials domain card.","revision_record":{"parent_version":null,"progress_targets_addressed":["Construct one causally explicit physical-domain candidate","Preserve self-selection, tier differentiation, a base-quality floor, and anti-collapse guardrails","Make the intervention independent of forbidden software and governance channels","Specify bounded evidence, falsifiers, authority, rollback, and chemical-safety limits"],"conceptual_changes":["Mapped hidden buyer types to hidden copper coordination populations.","Mapped monetary price gaps to ligand-exchange kinetic and free-energy thresholds.","Converted a commercial version menu into a passive chemical measurement ladder."],"operational_changes":["Restricted first use to synthetic standards and retained aliquots.","Separated the prototype from production control and bath dosing.","Added physical lane isolation, metering, quenching, containment, and disposal requirements."],"evidence_changes":["Defined a blinded 18-sample bench comparison with total-copper and witness-coupon baselines.","Added tests for monotonic threshold behavior, replicate agreement, matrix interference, and assay-induced redistribution."],"claim_changes":["Made no novelty, prevalence, demand, or effect-size claim.","Limited the contrastive claim to a conditional, falsifiable comparison against total copper and a single pad."]},"substrate_contract":{"primary_allowed_process":"MEASUREMENT_INSTRUMENTATION","counterfactual_independence":"If all software, algorithmic inference, dashboards, reporting systems, prices, incentives, authorization rules, and procedural enforcement are removed, aliquots still divide by capillarity, copper complexes still undergo threshold-dependent ligand exchange and diffusion, captured copper still forms immobilized colored products, and lane barriers still preserve distinct physical states. The essential discrimination can be read manually against fixed reference colors; wrappers may record results but do not create them.","forbidden_channel_audit":"The proposal contains no algorithm, database, recommender, information-routing mechanism, or software control loop. Its sensor function is the operative intervention itself: chemical exchange, diffusion, capture, and chromogenic transduction physically separate the sample responses before any interpretation. Governance is confined to safety and experimental authority. Archetype terms such as price and menu appear only in the structural mapping and are not relied upon to cause the measurement."}}}