Slot: value

A slot to provide the literal value of an attribute.

URI: prov:value Alias: value

Applicable Classes

Name	Description	Modifies Slot
CalcinationGaseousEnvironment	The specific gaseous environment maintained during a calcination step (e.g. "air", "N2", "10% O2/N2").	no
MolecularFormula	A structure descriptor which identifies each constituent element by its chemical symbol and indicates the number of atoms of each element found in each discrete molecule of that compound.	no
EquationsOfState	Equation of state relating energy (or enthalpy) to volume, fitted to a parametric model (e.g. Birch-Murnaghan). Used to extract equilibrium volume, bulk modulus, and its pressure derivative.	no
HeatingProcedure	A qualitative descriptor of the thermal programme or heating procedure applied (e.g. "isothermal", "ramp 5 °C/min to 500 °C, dwell 2 h").	no
ElectronicStructure	Electronic band structure and density of states, characterising the electronic properties of a catalyst relevant to activity descriptors (d-band centre, band gap, Fermi energy).	no
Temperature	A physical quantity that quantitatively expresses the attribute of hotness or coldness.	no
HeatingRate	Rate of temperature change per unit time during a thermal ramp.	no
BandGap	Electronic band gap and its character (direct/indirect), with optional many-body (GW) or excitonic corrections. Critical for photocatalyst and semiconductor catalyst screening.	no
PercentageOfTotal	A dimensionless ratio that quantifies the stoichiometric proportion of a chemical substance relative to a reference substance in a chemical reaction.	no
GrainBoundaries	Grain boundary structure and energetics from atomistic simulation. Relevant for understanding polycrystalline catalyst behaviour, sintering, and charge/defect segregation.	no
Surfaces	Surface properties of a catalyst computed from a periodic slab model, including surface energy, Miller index, slab thickness, and vacuum spacing. Central to heterogeneous catalysis modelling.	no
Pressure		no
Ferroelectrics	Ferroelectric properties computed from DFT, including spontaneous polarization, switching barrier, and coercive field. Relevant for ferroelectric-photocatalyst design.	no
QuantitativeAttribute	A quantifiable piece of information that is attributed to an Entity, Activity or AgenticEntity.	yes
SMILES	A structure descriptor that denotes a molecular structure as a graph and conforms to the SMILES format specification.	no
Volume	A measure of regions in three-dimensional space.	no
ElasticConstants	Elastic mechanical properties of a material derived from the elastic tensor, including bulk modulus, shear modulus, and Young's modulus.	no
InChIKey		no
VesselType	A qualitative descriptor of the type of reaction or synthesis vessel used (e.g. "autoclave", "round-bottom flask", "Schlenk tube").	no
DielectricTensors	Dielectric tensor computed from density functional perturbation theory (DFPT). Characterises the optical and static dielectric response of a material.	no
Area	A quantitative measure of surface area (e.g. active electrode area).	no
ElectricCurrent	A quantitative measure of electric current (e.g. faradaic current in an electrochemical cell).	no
OperationMode	A qualitative descriptor of the operation mode of an instrument or process (e.g. "transmission", "reflection", "AC", "DC", "full-scan").	no
Duration	A quantitative measure of elapsed time (duration of a process step).	no
IUPACName	A systematic name which is formulated according to the rules and recommendations for chemical nomenclature set out by the International Union of Pure and Applied Chemistry (IUPAC).	no
ThermodynamicStability	Thermodynamic stability of a material or phase, characterised by formation energy, convex hull distance, and competing phases. Used to screen catalyst stability and predict synthesis feasibility.	no
CalculatedProperty	Abstract QualitativeAttribute representing a property computed by a Simulation. Concrete subclasses carry the property-specific output values and the computational settings used to produce them. Linked from Simulation via the calculated_property slot.	no
Wavenumber	Reciprocal of wavelength; number of wave cycles per unit length (cm^-1).	no
AngularVelocity	Rate of rotational motion, typically expressed in revolutions per minute.	no
QualitativeAttribute	A piece of information that is attributed to an Entity, Activity or AgenticEntity.	yes
Density	A measure of the mass per unit volume of a substance.	no
Yield	A dimensionless physical quantity describing the fraction of a product B that is formed from a reactant A taking into account the stoichiometry. If A fully reacts to B without side-reactions, the yield of product B is 1 (or 100 %).	no
Piezoelectricity	Piezoelectric response of a non-centrosymmetric material, described by the piezoelectric tensor. Relevant for piezocatalysis applications.	no
EnergyQuantity	A quantitative measure of energy (eV, keV, kJ/mol, etc.).	no
ElectricPotential	A quantitative measure of electric potential difference or voltage.	no
MolarMass	A Mass (physical quality) that quantifies the mass of a homogeneous ChemicalSubstance containing 6.02 x 10^23 atoms or molecules.	no
PhononDispersion	Phonon dispersion relations computed from interatomic force constants, providing access to vibrational frequencies, thermodynamic quantities, and dynamical stability (imaginary modes).	no
InChi	A structure descriptor which conforms to the InChI format specification.	no
MassToChargeRatio	Ratio of mass to electric charge (m/z) in mass spectrometry.	no
Concentration	A QuantitativeAttribute of a ChemicalSubstance that represents the amount of a constituent divided by the volume of the mixture.	no
Mass	The strength of a body's gravitational attraction to other bodies.	no
Atmosphere	A qualitative descriptor of the gaseous environment or atmospheric conditions during a process (e.g. "air", "N2", "5% H2/Ar").	no
VolumeFlowRate	Volume of fluid passing a given point per unit time.	no
LengthQuantity	A quantitative measure of length or spatial dimension (nm, mm, cm).	no
PlaneAngle	A quantitative measure of a plane angle (e.g. scattering angle in degrees).	no
SamplePretreatment	A qualitative descriptor of the pre-treatment applied to a sample before a process or measurement (e.g. "reduction at 300 °C", "outgassing").	no
AmountOfSubstance	The total amount of substance used in a ChemicalReaction.	no
AqueousStability	Electrochemical (Pourbaix) stability of a catalyst in aqueous solution as a function of pH and electrode potential. Critical for electrocatalyst stability screening.	no
MolarEquivalent	A dimensionless ratio that quantifies the stoichiometric proportion of a chemical substance relative to a reference substance in a chemical reaction.	no
PHValue		no
PowerQuantity	Rate of energy transfer per unit time (e.g. laser power in mW).	no

Properties

Range: String

Identifier and Mapping Information

Schema Source

from schema: https://w3id.org/nfdi4cat/coremeta4cat

Mappings

Mapping Type	Mapped Value
self	prov:value
native	coremeta4cat:value

LinkML Source

name: value
description: A slot to provide the literal value of an attribute.
in_subset:
- domain_agnostic_core
from_schema: https://w3id.org/nfdi4cat/coremeta4cat
rank: 1000
slot_uri: prov:value
alias: value
domain_of:
- QualitativeAttribute
- QuantitativeAttribute
range: string