{"closest_prior_art":[{"name":"Silver nanoparticle colorimetric sensor array for museum airborne pollutants","overlap":"A field-deployable, passive, noncontact array produces analyte-dependent physical color patterns, distinguishes acidic and oxidizing museum pollutants, uses controls and replicated trials, and nondestructively differentiates volatile emissions from papers.","remaining_difference":"It does not describe spatially replicated cassettes at multiple distances and heights around an unexplained mixed-format storage anomaly, combine corrosion, acidity, moisture-history, and oxidant witness materials, or use the resulting gradient to rank collection, enclosure, biological, outdoor, and room-source explanations.","source_ids":["SRC4"]},{"name":"Three-in-one Oddy test with blanks","overlap":"Established conservation practice exposes multiple reactive metal coupons to airborne emissions without contact, compares them with blank controls, and interprets differential corrosion. Interlaboratory work also uses blinded duplicates and documents important reproducibility and visual-rating limitations.","remaining_difference":"The Oddy test assesses whether a known candidate material is suitable for storage or display under accelerated chambers; it is not an in-situ spatial source-localization differential for an already observed anomaly and does not include acid, moisture-history, or oxidant indicators.","source_ids":["SRC3"]},{"name":"Image Permanence Institute A-D Strips","overlap":"A first-party preservation product uses a passive color-changing witness to detect acidic vapor non-destructively, records severity, supplements odor and visual evidence, and informs proportionate preservation priorities.","remaining_difference":"It is recommended specifically for acetate film, normally operates within a closed can, bag, box, or cabinet, and supplies neither a multi-material response pattern nor spatial comparison among competing source mechanisms.","source_ids":["SRC2"]}],"contrastive_claim_falsifier":"The remaining claim would be falsified if blinded, replicated chambers representing acetate emissions, acidic enclosure products, oxidants, and moisture-related conditions showed that the complete multi-material, multi-position procedure classified or localized causes no better than an A-D strip, the AgNP array, a conventional coupon set, or blank variation—or if distance and height gradients were inconsistent across replicates.","contrastive_claim_remaining":"A narrow claim remains: for an unexplained mixed-format storage anomaly, combining physically distinct acid, corrosion, oxidant, and moisture witnesses with matched blanks and predeclared distance-and-height predictions yields reproducible source discrimination or localization beyond existing single-purpose strips, conventional three-metal coupon tests, and non-spatial pollutant sensor arrays.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"The bounded search covered the proposal directly, historical coupon and dosimeter terminology, established products and guidance, and combinations involving passive museum-pollutant arrays, Oddy coupons, A-D strips, blanks, and spatial monitoring. Four opened sources from four publishers were retained, including official guidance, first-party product information, and primary research.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"A fixed-duration, blinded chamber comparison with sacrificial sources, coded replicate cassettes, matched blanks, and predeclared classification criteria is finite and directly measures incremental discrimination. Blinded duplicate Oddy testing and replicated analyte-array validation provide workable precedents.","source_ids":["SRC3","SRC4"],"status":"PASS"},"distinct_testable_claim":{"rationale":"Although the core passive differential-array concept is substantially anticipated, no retained source combines mixed witness-material classes with distance-and-height replication around an unexplained anomaly and tests whether that geometry improves causal discrimination. That narrower incremental claim is measurable against named comparators.","source_ids":["SRC2","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"Passive A-D strips and noncontact metal coupons are established conservation tools, and the authorized first test is confined to sealed chambers with sacrificial materials and blanks. No retained source identifies a categorical stop, provided reagents remain contained and object treatment, ventilation changes, suspected mold disturbance, and destructive sampling remain under existing institutional authority.","source_ids":["SRC1","SRC2","SRC3"],"status":"PASS"},"supported_problem":{"rationale":"Official guidance documents damaging airborne, contact, and intrinsic pollutants from outdoor, building, enclosure, and collection sources; it calls for investigation when a specific problem appears and notes that museum air-monitoring methods are not standardized or extensively used. Primary research likewise identifies a need for sensitive, distributed museum-pollutant monitoring.","source_ids":["SRC1","SRC4"],"status":"PASS"}},"prior_art_disposition":"SUBSTANTIAL_COLLISION","problem_evidence":{"finding":"The underlying problem is visible: mixed collections can be affected by acetic acid, oxidants, sulfur compounds, water vapor, and emissions from objects, enclosures, building products, or outdoor air, causing corrosion, discoloration, acidification, deformation, and related damage. Existing guidance recognizes source investigation and monitoring as necessary but methodologically limited. The stronger assertion that staff commonly misattribute such localized anomalies is only indirectly supported.","source_ids":["SRC1","SRC2","SRC4"],"status":"PARTLY_SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P075","screen_survival":false,"search_lanes":{"component_combination":{"no_result_note":null,"queries":["museum storage pollutant dosimeter multi sensor acid oxidant humidity indicator array","Oddy test three metal coupons museum materials primary research","AgNP colorimetric sensor array museum airborne pollutants"],"source_ids":["SRC3","SRC4"]},"direct_problem_and_intervention":{"no_result_note":null,"queries":["museum archive storage passive indicator coupon array acid corrosion oxidant moisture pollutant","museum indoor air quality passive sampler metal coupons corrosion monitor collections official guidance"],"source_ids":["SRC1","SRC4"]},"products_practices_and_standards":{"no_result_note":null,"queries":["collection care standards pollutant monitoring passive samplers indicator coupons archives","acetate film vinegar syndrome acid detection strips A-D strips Image Permanence Institute","site:canada.ca conservation institute museum pollutants monitoring passive samplers corrosion coupons"],"source_ids":["SRC1","SRC2","SRC3"]},"synonyms_and_historical_terms":{"no_result_note":null,"queries":["archival storage witness coupon metal corrosion dosimeter Oddy test acid detection strip","museum airborne pollutant passive sampling indicator papers Draeger tubes Oddy test"],"source_ids":["SRC2","SRC3","SRC4"]}},"sources":[{"claims_supported":["Museum pollutants may be airborne, contact-transferred, or intrinsic and may originate outdoors, in buildings and enclosures, or in collection objects.","Acetic acid, oxidants, sulfur compounds, particles, and water vapor can damage mixed collection materials through corrosion, discoloration, acidification, deformation, and related effects.","Monitoring is important, but museum air-quality methods are not standardized or extensively used; specific problems warrant investigation and qualified response."],"publisher":"Canadian Conservation Institute, Government of Canada","source_id":"SRC1","source_type":"OFFICIAL_GUIDANCE","title":"Agent of Deterioration: Pollutants","url":"https://www.canada.ca/en/conservation-institute/services/agents-deterioration/pollutants.html"},{"claims_supported":["A-D Strips are first-party passive acid-responsive indicators for non-destructive detection and recording of acetate-film vinegar syndrome.","The strips change color in acidic vapor and may be used in closed cans, bags, boxes, or cabinets to inform monitoring and preservation priorities.","IPI recommends them only for acetate film, limiting their specificity as a general differential."],"publisher":"Image Permanence Institute, Rochester Institute of Technology","source_id":"SRC2","source_type":"FIRST_PARTY_PRODUCT","title":"Using A-D Strips","url":"https://www.filmcare.org/ad_strips"},{"claims_supported":["The established three-in-one Oddy test uses silver, lead, and copper coupons with blank comparisons to assess airborne emissions from candidate storage or display materials.","A seven-institution comparison blind-tested ten materials in duplicate and found reproducibility and subjective-rating discrepancies.","The test has many protocol variants and is not fully standardized."],"publisher":"npj Heritage Science, Springer Nature","source_id":"SRC3","source_type":"PRIMARY_RESEARCH","title":"Review and interlaboratory comparison of the Oddy test methodology","url":"https://www.nature.com/articles/s40494-024-01174-9"},{"claims_supported":["A passive, field-deployable colorimetric array was developed specifically to identify acidic, oxidizing, and other museum pollutants through distinguishable response patterns.","The array discriminated 11 gas pollutants in replicated trials and nondestructively differentiated volatile emissions from five paper types.","The work explicitly positions the array as an alternative to traditional metal coupons and other passive indicators."],"publisher":"ACS Sensors, American Chemical Society","source_id":"SRC4","source_type":"PRIMARY_RESEARCH","title":"Ultrasensitive Monitoring of Museum Airborne Pollutants Using a Silver Nanoparticle Sensor Array","url":"https://suslick.scs.illinois.edu/documents/acssensors.AgNPpollutants.pdf"}],"world_novelty_boundary":"This bounded public-web screen found substantial prior art for the proposal's central noncontact passive differential-array mechanism. It did not establish whether the narrower combination of heterogeneous witness materials, spatial gradients, blanks, and explicit rival-ranking has appeared elsewhere, and it cannot establish world novelty, patentability, market size, expert acceptance, or realized preservation value."}