{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"anchoring_reset__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"anchoring_reset__chemistry_materials__CONSTRAINED_HIGH","decision":"PROPOSAL","abstention_reason":null,"proposal":{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"anchoring_reset__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"anchoring_reset__chemistry_materials__CONSTRAINED_HIGH","proposal_index":1,"version":0,"title":"Seed-Memory Reset Cell for Polymorph Crystallization","problem":"Residual crystals from an earlier crystallization batch can act as the first structural template encountered by a supersaturated solution. If that inherited seed favors an unwanted polymorph, subsequent batches can keep reproducing the same solid form even when operators adjust bulk composition or temperature. Those adjustments remain physically anchored to the unremoved template rather than testing nucleation from a reset material state.","actors":["Supersaturated molecular solution","Residual crystals or crystalline films in the vessel and transfer path","Candidate polymorph seed lots","Crystallization vessel, hot depth filter, and isolated test cells","Materials chemist responsible for phase characterization","Laboratory safety authority and process owner"],"observable_state":"Under otherwise matched crystallization conditions, material processed after contact with a particular solid form repeatedly yields that form, while particles recovered from the vessel or transfer path have a matching diffraction signature. The proposed test treats this history dependence as an observable state rather than assuming that the residual solid is causal.","consequence":"An inherited metastable or otherwise unsuitable polymorph can propagate into later batches, changing solid-form-dependent handling, stability, or functional properties and obscuring whether the selected process conditions actually favor that form.","affected_objective":"Obtain a reproducible, evidence-characterized solid form without allowing residual crystals from an earlier batch to determine the crystallization pathway by default.","intervention":"Use a closed, small-volume seed-memory reset cell. A solution is heated within a verified chemical-stability window until visible and recoverable crystals dissolve, transferred while hot through a chemically compatible submicron depth filter, and divided into physically sealed cells that cannot cross-seed one another. Some cells remain unseeded to expose de novo nucleation outcomes; matched cells receive equal masses of separately verified candidate polymorph seeds. After the same passive cooling schedule, powder diffraction and thermal analysis identify the resulting phases. A verified seed form supported by those measurements can then be introduced physically into a fresh downstream batch, while upstream surfaces and feed paths implicated in carrying the old seed are replaced or cleaned before reuse.","structural_mapping":[{"archetype_element":"Initial reference","domain_realization":"The first surviving crystal particle or crystalline surface that templates the solution toward its lattice arrangement."},{"archetype_element":"Anchor identification and visibility","domain_realization":"Recovered filter residue and vessel swabs are examined by microscopy and diffraction to determine whether a solid-form template survived from the earlier batch."},{"archetype_element":"Independent estimate","domain_realization":"Seed-erased solution nucleates separately in sealed cells, producing physically independent crystallization outcomes rather than adjustments around the inherited seed."},{"archetype_element":"Alternative reference set","domain_realization":"Matched isolated cells receive verified seeds of different candidate polymorphs, making the inherited form one materially testable template among several."},{"archetype_element":"Calibration evidence","domain_realization":"Powder diffraction, thermal transitions, mass recovery, and a predefined relevant material-property test distinguish which seed-conditioned outcomes are supported by measured phase identity and behavior."},{"archetype_element":"Recalibrated reference","domain_realization":"A characterized seed lot and compatible crystallization window replace incidental residue as the physical template for a downstream trial."},{"archetype_element":"Downstream anchor trace","domain_realization":"Vessel walls, filters, transfer tubing, feed solids, and retained mother liquor are checked as possible carriers through which the previous polymorph could continue reseeding later batches."},{"archetype_element":"Uncertainty band","domain_realization":"Replicate-cell phase distributions are retained rather than converting mixed or stochastic nucleation results into a single falsely precise preferred form."}],"mechanism_mapping":[{"mechanism_slug":"blind_independent_estimates","role":"Physical isolation of multiple seed-erased cells supplies independent nucleation outcomes that have not contacted the inherited crystalline template.","counterfactual_removal":"Without dissolution, filtration, and cell isolation, residual particles or cross-seeding could make the nominally independent outcomes descendants of the same initial crystal."},{"mechanism_slug":"multiple_anchor_comparison","role":"Equal, verified seed additions expose matched solution portions to several alternative lattice templates under the same material conditions.","counterfactual_removal":"Without materially distinct seed conditions, a changed outcome could not be contrasted with alternative physical references and might merely reflect uncontrolled spontaneous nucleation."},{"mechanism_slug":"baseline_recalibration","role":"The apparatus removes the inherited solid baseline and, if evidence supports doing so, establishes a characterized seed lot as the new physical nucleation reference.","counterfactual_removal":"If old residue remains in the vessel or transfer path, it can continue templating crystallization even when the nominal seed specification or written process baseline changes."}],"causal_chain":["A residual crystal or crystalline film survives an earlier batch.","The residual solid contacts supersaturated solution before competing nuclei become established.","Heterogeneous nucleation or epitaxial growth lowers the local barrier for the matching polymorph, causing later solid formation to inherit the first template.","Heating and hot filtration physically dissolve or remove the inherited template.","Division into sealed cells prevents a surviving or newly formed crystal in one cell from becoming the common reference for all cells.","Unseeded cells reveal post-reset nucleation variability, while separately seeded cells test alternative physical templates.","Phase and property measurements distinguish supported candidate references from unsupported counter-anchors.","A characterized seed lot can physically initiate a downstream trial after identified carriers of the former seed have been removed."],"baseline":"Continue using the existing vessel and transfer path, adjust temperature or solvent conditions around the observed product form, and rely on ordinary cleaning without demonstrating removal of subvisible crystalline residue. This baseline leaves open the possibility that every trial begins from the same inherited template.","nearest_rivals":["A solvent or antisolvent change that alters relative nucleation and growth kinetics without explicitly removing residual seeds.","Addition of a crystal-growth modifier or impurity scavenger that changes polymorph selectivity chemically.","Mechanical milling or slurry conversion of the isolated solid after crystallization rather than resetting nucleation before it occurs.","More aggressive vessel cleaning alone, without isolated unseeded and alternative-seed comparisons.","Direct acceptance of the thermodynamically stable form after long equilibration, if the application permits the required time and conditions."],"remaining_contrastive_claim":"Relative to operating-condition changes or cleaning alone, the reset cell specifically tests whether eliminating inherited crystalline templates, permitting isolated de novo nucleation, and introducing verified alternative templates changes solid-form inheritance. It does not establish that seed memory is the cause unless the planned controls separate that explanation from solution chemistry, surface effects, and equilibrium phase conversion.","authority_safety":{"decision_authority":"The materials principal investigator may authorize the bounded experiment only after the laboratory safety authority approves the compound, solvent, temperature, filter compatibility, and containment; the process owner separately controls any later production change.","authorized_first_step":"Run one contained benchtop comparison using no more than two grams total solute: matched untreated-history controls, hot-filtered unseeded cells, and hot-filtered cells seeded with available verified polymorphs. Record temperature exposure, recover filter residue, and characterize solid phases before considering any larger trial.","excluded_actions":["Production-scale implementation","Use of an uncharacterized compound, seed lot, or decomposition-prone temperature range","Heating a sealed system without rated pressure relief","Changing product specifications or releasing resulting material for use","Combining incompatible solvents, filters, or vessel materials","Selecting a downstream seed form before phase and relevant property characterization"],"halt_rollback":"Stop heating or transfer upon unexpected pressure, discoloration, gas evolution, precipitation upstream of the filter, filter blockage, loss of containment, or evidence of chemical degradation. Cool to a safe state, isolate the apparatus, retain samples for characterization, and dispose of or recover material under the approved laboratory plan. No production baseline changes during this first step, so rollback consists of abandoning the test material and retaining the existing process."},"negative_tests":{"strongest_counterevidence":"After verified removal of detectable seed residue, crystallization still yields the same phase distribution regardless of vessel history, isolation, or addition of alternative verified seeds; this would favor bulk thermodynamics, solvent-mediated transformation, or another kinetic variable over inherited-template anchoring.","problem_falsifier":"Matched batches with and without deliberate prior exposure to the suspect polymorph show no reproducible history dependence, and recovered surfaces or filters contain no phase-consistent particles within the measurement limits.","intervention_falsifier":"Deliberate trace spiking with the suspect polymorph creates history dependence, but the proposed heating and hot-filtration step neither removes the spiked particles nor changes downstream phase outcomes relative to untreated controls.","risks":["Heating may degrade or react the solute or solvent.","Hot filtration may adsorb solute, shed particles, or introduce a surface that itself biases nucleation.","Pressure can rise if a volatile solvent is heated or a filter blocks.","Nominally isolated cells may differ in surface chemistry and create new uncontrolled nucleation references.","Alternative seed lots may contain mixed phases or transform during storage or addition.","Removing a kinetically favored form may expose a less manageable or less stable solid form.","Stochastic nucleation may make a small experiment inconclusive.","Solvent exposure and hot-liquid handling present containment and personnel hazards."]},"next_evidence_step":"Within the authorized two-gram limit, prepare one homogeneous solution and divide it among untreated-history controls and a hot-filtered stream. Partition the filtered stream into at least twelve sealed cells allocated across unseeded and available verified-seed conditions, with matched vessel material and cooling exposure. Characterize recovered filter residue and every resulting solid by powder diffraction, add thermal analysis where sample mass permits, and compare phase distributions without treating nondetection of residue as proof of absence. Proceed no further if degradation, uncontrolled precipitation, or mixed seed identity prevents causal interpretation.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Not assessed against other proposals because runtime isolation prohibits 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 independently recognizable chemistry/materials problem.","Preserve anchor exposure, independent alternatives, evidence calibration, recalibration, and downstream inheritance.","Make the essential intervention physical and counterfactually independent of forbidden wrappers.","Specify bounded authority, safeguards, rivals, falsifiers, and a first evidence step."],"conceptual_changes":["Translated an informational reference point into an inherited crystalline template whose early physical contact biases a later phase pathway.","Defined reset as seed dissolution, particle removal, and cross-seeding isolation rather than bias awareness or workflow review."],"operational_changes":["Specified a small-volume heated filtration and sealed-cell apparatus.","Included unseeded, inherited-history, and alternative verified-seed material conditions.","Bound the first test by solute mass and prohibited production changes."],"evidence_changes":["Made vessel-history dependence and phase-matched residue the initial observations to test.","Added diffraction, thermal analysis, deliberate trace-spike controls, and replicate phase distributions.","Separated seed-memory evidence from bulk thermodynamic and surface-chemistry explanations."],"claim_changes":["No novelty, prevalence, demand, or effect-size claim is made.","The claim is limited to a causal comparison that the bounded experiment can falsify.","Prior art remains explicitly unsearched."]},"substrate_contract":{"primary_allowed_process":"PHYSICAL_MATERIAL","counterfactual_independence":"The essential reset is accomplished by molecular dissolution of crystals, physical particle capture, spatial isolation against cross-seeding, and material templating by verified seed crystals. If software, algorithms, databases, dashboards, reporting, incentives, authorization rules, and procedural enforcement are removed, those material transformations still erase the inherited template and create independent or alternatively seeded crystallization paths. Phase measurements are needed to evaluate the result but do not produce the reset.","forbidden_channel_audit":"No algorithm selects the polymorph, no database or dashboard routes information, and no reporting or human compliance loop causes the crystallization change. Temperature regulation may assist repeatability but can be supplied by a simple laboratory bath and is not the operative inference or control mechanism. Governance limits exposure and scale only. The causal load remains on dissolution, filtration, spatial separation, nucleation, crystal growth, and physical reseeding."}}}