{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T11:07:43Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 21.9, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0954c-1347-7e42-b9b6-d6c5199b95b0\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: magnetite nanoparticle\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 04", "usd": 0.0, "recall": true }, "codex": { "seconds": 78.0, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0954c-133b-77b2-907a-a67b972014cd\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: magnetite nanoparticle\nRegistry id: vr.tr.magnetite-nanoparticle\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:54:00+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:30+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q3870166", "registryId": "vr.tr.magnetite-nanoparticle", "name": "magnetite nanoparticle", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q3870166/", "model": { "registry_id": "vr.tr.magnetite-nanoparticle", "name": "magnetite nanoparticle", "purpose": "Enable an agent to identify a magnetite nanoparticle, assess its phase, dimensions, surface and magnetic state, and select evidence-supported handling or use.", "definition": "A magnetite nanoparticle is a nanoscale particle composed principally of the mixed-valence iron oxide Fe₃O₄, whose inverse-spinel crystal structure supports ferrimagnetic ordering and whose size can permit superparamagnetic behavior.", "scope_statement": "This model owns vr.tr.magnetite-nanoparticle in PHY / PHY.OBJ: a nanoscale particle identified by its magnetite phase, including coatings and transformations that affect its identity or behavior, while distinguishing individual-particle properties from population and dispersion measurements.", "in_scope": [ "Magnetite phase identification, iron valence and partial oxidation", "Primary-particle dimensions, morphology and internal crystallite structure", "Surface chemistry, attached coatings and core-shell boundaries", "Magnetic response under specified temperature, field and measurement timescale", "Aggregation, dispersion behavior and changes during storage or use", "Sample provenance and evidence supporting application-specific suitability" ], "out_of_scope": [ "Bulk magnetite mineralogy, ore deposits and mining operations", "Maghemite, hematite and other iron oxide nanoparticles as independent material kinds", "Complete ferrofluid formulations and their bulk engineering properties", "Synthesis reactors and manufacturing processes as operational systems", "MRI scanners, magnetic separators and hyperthermia equipment", "Clinical treatment protocols, patient outcomes and finished-product authorization" ], "distinguishing_features": [ "Require phase and iron-valence evidence consistent with magnetite, nominally Fe3O4; a magnetic response alone cannot distinguish it from neighboring magnetic iron oxides. [Primary characterization study](https://www.nature.com/articles/srep30969)", "Measure primary-particle dimensions directly and state the nanoscale convention used; crystallite size and hydrodynamic diameter answer different identification questions.", "Resolve whether the specimen is one particle, a multicrystallite particle or a cluster of particles before assigning its size and internal structure.", "Check oxidation state independently of external size or shape: oxidation can occur without an observable change in those dimensions. [Oxidation study](https://www.nature.com/articles/s41467-021-26566-4)", "Establish superparamagnetic or blocked behavior under recorded measurement conditions; do not use the label 'superparamagnetic iron oxide' as proof of magnetite composition." ], "characteristics": [ { "name": "Phase assignment", "kind": "category", "unit_or_values": "magnetite; partially oxidized magnetite; mixed phase; unresolved, with methods and confidence", "why_it_matters": "Determines whether the particle belongs to this entry and whether neighboring phases must be represented." }, { "name": "Iron valence balance", "kind": "measurement", "unit_or_values": "Fe(II)/total Fe molar fraction, with uncertainty and sampling depth", "why_it_matters": "Supports assessment of oxidation and distinguishes surface-sensitive evidence from whole-particle composition." }, { "name": "Primary-particle dimensions", "kind": "measurement", "unit_or_values": "nm along relevant axes; distribution and number of particles measured", "why_it_matters": "Establishes nanoscale geometry without substituting the size of a solvated cluster." }, { "name": "Crystallite structure", "kind": "category", "unit_or_values": "single crystalline; multicrystalline; defective; unresolved, with characterization method", "why_it_matters": "Separates physical particle boundaries from coherent crystalline domains." }, { "name": "Surface coating", "kind": "relation", "unit_or_values": "linked coating or ligand identity, attachment evidence, coverage and thickness where measured", "why_it_matters": "Connects the magnetite surface to its dispersion behavior and permitted functionalization." }, { "name": "Hydrodynamic size", "kind": "measurement", "unit_or_values": "nm, with distribution weighting, medium, temperature, concentration and method", "why_it_matters": "Describes the dispersed entity under conditions relevant to transport and use." }, { "name": "Electrokinetic potential", "kind": "measurement", "unit_or_values": "zeta potential in mV, with pH, electrolyte composition and measurement model", "why_it_matters": "Provides condition-dependent evidence about the particle-medium interface." }, { "name": "Magnetization response", "kind": "measurement", "unit_or_values": "A·m²/kg with explicit mass basis, applied field, temperature and saturation criterion", "why_it_matters": "Allows meaningful comparison without confusing iron mass, oxide mass and coated-sample mass." }, { "name": "Magnetic relaxation state", "kind": "state", "unit_or_values": "superparamagnetic; blocked; mixed population; unresolved, at stated temperature and observation timescale", "why_it_matters": "Prevents a condition-dependent magnetic observation from becoming an unconditional identity label." }, { "name": "Particle association state", "kind": "state", "unit_or_values": "dispersed; reversibly associated; persistently aggregated; sedimented; unresolved", "why_it_matters": "Determines whether measurements and handling decisions concern individual particles or clusters." }, { "name": "Transformation history", "kind": "relation", "unit_or_values": "dated links to oxygen exposure, heating, medium changes and before/after characterization", "why_it_matters": "Connects the current phase and performance to changes since preparation." }, { "name": "Material concentration", "kind": "measurement", "unit_or_values": "mg Fe/mL or mg iron oxide/mL, with explicit basis and assay", "why_it_matters": "Supports reproducible dispersion preparation and interpretation of performance measurements." } ], "affordances": [ "Request complementary phase and valence measurements when the magnetite assignment is uncertain.", "Compare samples using matched size definitions, magnetic conditions and mass normalization.", "Select and verify coating or ligand modification for a specified medium.", "Evaluate magnetic collection and redispersion under a documented field gradient.", "Detect aging or oxidation and trigger recharacterization before reuse.", "Assess a proposed imaging, heating, adsorption or separation use against measurements from the relevant formulation." ], "agent_conduct": { "may": [ "Describe magnetite nanoparticles and their uses in research, imaging and water treatment from reliable sources.", "Record samples, coatings and storage in a laboratory the agent is authorized to manage." ], "must_not": [ "Present research products as approved medical treatments.", "Release nanoparticles into drains or the environment.", "Handle dry nanopowders without the site's controls for inhalation.", "Overstate early research in a way that misleads patients or investors." ], "requires_human": [ "Use of nanoparticles in animals or people." ] }, "ethics": { "considerations": [ "The long-term health effects of inhaled nanoparticles are not fully known.", "Medical hype can mislead patients." ], "affected_parties": [ "Laboratory workers", "Patients in trials", "Ecosystems" ] }, "owners": { "steward": "The laboratory or producer that holds the material.", "master_systems": [ "Chemical inventories and safety data sheet systems" ] }, "visual_identification": [ "A black powder or dark brown liquid suspension that is drawn towards a magnet." ], "failure_modes_and_hazards": [ "Fine powders can be inhaled.", "Particles can clump and lose their useful properties." ], "what_it_is_for": [ "These particles are studied and used in magnetic separation, surface-functionalized assays and materials research.", "Biomedical research investigates suitable formulations for imaging contrast, targeted delivery and magnetic heating.", "Their suitability depends on particle dimensions, aggregation, surface chemistry and the surrounding medium." ], "standards_and_regulation": [ "ISO 14971, issued by the International Organization for Standardization, applies to risk management when these particles form part of a medical device.", "ISO 10993-1, issued by the International Organization for Standardization, provides the framework for biological evaluation when these particles form part of a body-contacting medical device." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q3870166: magnetite nanoparticle", "url": "https://www.wikidata.org/wiki/Q3870166", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Magnetic nanoparticles", "url": "https://en.wikipedia.org/wiki/Magnetic_nanoparticles", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "magnetite-identity", "name": "Magnetite identity", "description": "Establish the chemical and crystalline identity of the nanoscale iron oxide.", "rationale": "The registry name requires evidence that distinguishes magnetite from similar iron oxide phases.", "layers": [ { "id": "phase-and-valence", "name": "Phase and valence", "description": "Connect structural measurements with iron oxidation-state evidence.", "findings": [ { "id": "magnetite-assignment", "name": "Magnetite assignment", "description": "Record the proposed phase assignment, supporting observations and unresolved alternatives.", "questions": [ { "text": "Which structural and valence-sensitive measurements support magnetite rather than maghemite or a mixed iron oxide?", "kind": "definition", "id": "magnetite-assignment-q01" }, { "text": "What Fe(II)/total Fe fraction was measured, with what uncertainty and sensitivity to surface versus interior?", "kind": "measurement", "id": "magnetite-assignment-q02" } ] } ] }, { "id": "oxidation-and-phase-boundary", "name": "Oxidation and phase boundary", "description": "Represent nonstoichiometry, oxidation gradients and secondary phases.", "findings": [ { "id": "retained-magnetite", "name": "Retained magnetite", "description": "Make explicit how much of the identified particle remains attributable to magnetite.", "questions": [ { "text": "Does the evidence resolve homogeneous partial oxidation, a magnetite core with an oxidized shell, or separate phases?", "kind": "boundary", "id": "retained-magnetite-q01" }, { "text": "What evidence would require reassignment to a mixed-phase particle or another iron oxide entry?", "kind": "boundary", "id": "retained-magnetite-q02" } ] } ] } ] }, { "id": "particle-geometry", "name": "Particle geometry", "description": "Separate primary-particle dimensions, crystalline domains and associated particles.", "rationale": "Size-dependent interpretation fails when different physical size measurements are treated as interchangeable.", "layers": [ { "id": "primary-particle-dimensions", "name": "Primary-particle dimensions", "description": "Describe the material boundary and geometry of individual particles.", "findings": [ { "id": "nanoscale-membership", "name": "Nanoscale membership", "description": "Document the size convention and observations supporting classification as a nanoparticle.", "questions": [ { "text": "What are the primary-particle dimensions and shape distribution, and does the measured boundary include the coating?", "kind": "measurement", "id": "nanoscale-membership-q01" }, { "text": "Which nanoscale definition is being applied, particularly for elongated particles or broad size distributions?", "kind": "definition", "id": "nanoscale-membership-q02" } ] } ] }, { "id": "internal-and-associated-structure", "name": "Internal and associated structure", "description": "Distinguish coherent crystal domains from physical particles and clusters.", "findings": [ { "id": "particle-domain-correspondence", "name": "Particle-domain correspondence", "description": "Relate microscopy, diffraction and dispersion measurements to the entities each measures.", "questions": [ { "text": "Does a microscopy-resolved particle contain one crystalline domain or several, and how does that compare with diffraction-derived crystallite size?", "kind": "measurement", "id": "particle-domain-correspondence-q01" }, { "text": "Does a larger observed entity represent fused material, an aggregate or a reversible association of separate nanoparticles?", "kind": "boundary", "id": "particle-domain-correspondence-q02" } ] } ] } ] }, { "id": "surface-and-dispersion", "name": "Surface and dispersion", "description": "Represent the exposed or coated magnetite interface in a specified surrounding medium.", "rationale": "An agent needs the actual interface and medium to interpret dispersion measurements or choose surface modifications.", "layers": [ { "id": "coating-and-accessibility", "name": "Coating and accessibility", "description": "Identify surface-bound material and distinguish it from unbound formulation components.", "findings": [ { "id": "surface-attachment", "name": "Surface attachment", "description": "Record coating identity, attachment evidence and accessible surface functionality.", "questions": [ { "text": "Which ligands or shells are attached, and what evidence distinguishes attached material from residual free molecules?", "kind": "measurement", "id": "surface-attachment-q01" }, { "text": "Which surface groups or magnetite sites remain accessible for the proposed conjugation or adsorption step?", "kind": "action", "id": "surface-attachment-q02" } ] } ] }, { "id": "medium-dependent-association", "name": "Medium-dependent association", "description": "Track dispersed size and association as functions of preparation and medium.", "findings": [ { "id": "dispersion-state", "name": "Dispersion state", "description": "Describe the measured dispersed population without equating hydrodynamic size with core size.", "questions": [ { "text": "What hydrodynamic size distribution and zeta potential were measured at the stated pH, ionic strength, concentration and temperature?", "kind": "measurement", "id": "dispersion-state-q01" }, { "text": "After medium exchange, storage or magnetic collection, can the original dispersion state be restored by a documented procedure?", "kind": "action", "id": "dispersion-state-q02" } ] } ] } ] }, { "id": "magnetic-behavior", "name": "Magnetic behavior", "description": "Capture field response, relaxation and the evidence required for magnetic manipulation.", "rationale": "A magnetic material label does not establish collection efficiency, remanence or heating performance.", "layers": [ { "id": "field-response-and-relaxation", "name": "Field response and relaxation", "description": "Qualify magnetic observations by conditions, timescale and normalization.", "findings": [ { "id": "conditional-magnetic-state", "name": "Conditional magnetic state", "description": "Record magnetization and magnetic-state evidence without assuming universal superparamagnetism.", "questions": [ { "text": "What magnetization curve, coercivity and remanence were measured, at which temperature and with which mass normalization?", "kind": "measurement", "id": "conditional-magnetic-state-q01" }, { "text": "What temperature-dependent or frequency-dependent evidence supports the assigned relaxation state on the relevant observation timescale?", "kind": "measurement", "id": "conditional-magnetic-state-q02" } ] } ] }, { "id": "magnetic-operation", "name": "Magnetic operation", "description": "Connect proposed field-driven actions to measurements on the relevant sample.", "findings": [ { "id": "field-driven-performance", "name": "Field-driven performance", "description": "Keep magnetic collection and alternating-field heating as separately demonstrated capabilities.", "questions": [ { "text": "What collection fraction and collection time were demonstrated for the stated field gradient, geometry, medium and concentration?", "kind": "measurement", "id": "field-driven-performance-q01" }, { "text": "If heating is proposed, what loss power was measured at the stated field amplitude and frequency, with what mass basis and thermal correction?", "kind": "action", "id": "field-driven-performance-q02" } ] } ] } ] }, { "id": "history-and-use-readiness", "name": "History and use readiness", "description": "Connect preparation, aging and sample-specific evidence to a proposed use.", "rationale": "Measurements on fresh or differently prepared magnetite nanoparticles cannot automatically justify action on the current sample.", "layers": [ { "id": "preparation-and-aging", "name": "Preparation and aging", "description": "Track conditions that may change phase, coating or association state.", "findings": [ { "id": "characterized-material-history", "name": "Characterized material history", "description": "Tie each measurement to an identifiable batch and its treatment history.", "questions": [ { "text": "Which synthesis, purification and coating records identify this batch, including residual precursors or processing agents?", "kind": "provenance", "id": "characterized-material-history-q01" }, { "text": "What before-and-after evidence shows whether oxygen exposure, heating, drying or storage changed phase, coating integrity or aggregation?", "kind": "measurement", "id": "characterized-material-history-q02" } ] } ] }, { "id": "application-evidence", "name": "Application evidence", "description": "Identify the measurements and unresolved conditions relevant to a specific proposed operation.", "findings": [ { "id": "sample-specific-suitability", "name": "Sample-specific suitability", "description": "Separate demonstrated material capabilities from intended applications and formulation-level claims.", "questions": [ { "text": "Which proposed use has supporting measurements on this batch or an explicitly justified equivalent formulation?", "kind": "provenance", "id": "sample-specific-suitability-q01" }, { "text": "Before that use, which unresolved checks concerning iron release, residual reagents, exposure, coating stability or performance require resolution?", "kind": "action", "id": "sample-specific-suitability-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This is recalled knowledge without source consultation; no standards or regulatory requirements are asserted.", "Particle diameter, crystallite size, and hydrodynamic diameter are different measurements and should not be substituted for one another.", "Phase purity, oxidation state, and superparamagnetic behavior require characterization; biomedical uses listed here do not establish approval of any particular formulation." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of magnetite nanoparticle this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-kinds", "name": "Kinds and varieties", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Uncoated magnetite nanoparticles", "Silica-coated magnetite nanoparticles", "Polymer-coated magnetite nanoparticles", "Surface-functionalized magnetite nanoparticles", "Single-core magnetite nanoparticles", "Multicore magnetite nanoclusters" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of magnetite nanoparticle this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Chemical formula", "value_or_pattern": "Fe₃O₄", "note": "Identifies the magnetite composition, not particle size, morphology, coating, aggregation state, or a particular nanoparticle product." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of magnetite nanoparticle this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Magnetic separation and recovery of materials, including functionalized particles used to capture biomolecules.", "Preparation of ferrofluids and other magnetically responsive dispersions.", "Research and development of magnetic resonance imaging contrast agents.", "Research and development of magnetic hyperthermia agents.", "Adsorbents and catalyst supports that can be recovered magnetically." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of magnetite nanoparticle this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Primary particle size", "typical_range": "Approximately 1-100; many studied formulations have diameters in the tens of nanometers", "unit": "nm" }, { "quantity": "Iron oxidation-state ratio in ideal stoichiometric magnetite", "typical_range": "Fe(II):Fe(III) = 1:2", "unit": "molar ratio" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of magnetite nanoparticle this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Oxidation toward maghemite changes iron oxidation states and magnetic properties.", "Aggregation or agglomeration changes effective size, sedimentation, and magnetic response.", "Coating degradation or loss can destabilize dispersions and alter interactions with surrounding materials.", "Airborne dry nanoparticle powders present an inhalation exposure concern.", "Biological effects depend on dose, coating, size, impurities, and exposure route; iron-mediated oxidative stress can be a concern." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of magnetite nanoparticle this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Bulk magnetite", "difference": "Has the same nominal composition and crystal structure but lacks the nanoscale dimensions that strongly influence surface and magnetic behavior." }, { "name": "Maghemite nanoparticle", "difference": "Maghemite is γ-Fe₂O₃, containing predominantly Fe(III) and cation vacancies, whereas ideal magnetite contains both Fe(II) and Fe(III)." }, { "name": "Hematite nanoparticle", "difference": "Hematite is α-Fe₂O₃ and has a different crystal structure and magnetic behavior." }, { "name": "Superparamagnetic iron oxide nanoparticle", "difference": "This category is defined by magnetic behavior and can include magnetite or maghemite; a magnetite nanoparticle is not necessarily superparamagnetic at the measurement temperature and timescale." }, { "name": "Ferrofluid", "difference": "A ferrofluid is a stable colloidal dispersion of magnetic particles in a carrier liquid, rather than an individual particle or particle material." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of magnetite nanoparticle this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which existing Vercy models already own magnetite, iron oxide nanoparticles and coated composite particles, and what should this entry inherit from them?", "Which nanoscale convention should govern this registry entry, including elongated particles, multicore structures and distributions extending beyond its limits?", "What minimum complementary measurements and uncertainty criteria are sufficient to distinguish magnetite from maghemite in small, coated or partially oxidized samples?", "At what measured degree or spatial pattern of oxidation should the particle be classified as mixed phase or linked to another material entry?", "Which intended applications need dedicated extensions for performance, exposure and acceptance criteria beyond this material model?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 17, "questions": 27 } }