Fick's first law of diffusion

E369670

Fick's first law of diffusion is a fundamental physical law that relates the diffusive flux of particles to the spatial gradient of their concentration, describing how substances move from regions of high to low concentration.

All labels observed (5)

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf constitutive relation ⓘ
law of diffusion ⓘ
physical law ⓘ
appliesTo diffusion in fluids ⓘ
diffusion in solids ⓘ
mass transport by diffusion ⓘ
assumes no accumulation of diffusing species ⓘ
steady state diffusion ⓘ
describes diffusive flux ⓘ
dimensionOfDiffusionCoefficient area per unit time ⓘ
dimensionOfFlux amount per unit area per unit time ⓘ
drivingForce concentration gradient ⓘ
expresses linear phenomenological relation between flux and driving force ⓘ
field biophysics ⓘ
chemical engineering ⓘ
materials science ⓘ
physical chemistry ⓘ
statistical mechanics ⓘ
thermodynamics ⓘ
transport phenomena ⓘ
hasQuantity concentration gradient ⓘ
diffusion coefficient ⓘ
diffusive flux ⓘ
historicalYear 1855 ⓘ
implies transport from high concentration to low concentration ⓘ
introducedBy Adolf Eugen Fick ⓘ
linked to: Adolf Fick
mathematicalForm J = -D ∂C/∂x ⓘ
namedAfter Adolf Fick ⓘ
relatedTo Fick's laws of diffusion ⓘ
Fick's second law of diffusion ⓘ
Fickian diffusion ⓘ
relates diffusive flux to concentration gradient ⓘ
signConvention negative sign indicates flux opposite to concentration gradient ⓘ
states the diffusive flux is proportional to the negative gradient of concentration ⓘ
usedIn corrosion science ⓘ
drug delivery modeling ⓘ
geological transport modeling ⓘ
mass transfer calculations ⓘ
modeling diffusion in membranes ⓘ
semiconductor processing ⓘ
usesSymbol C for concentration ⓘ
D for diffusion coefficient ⓘ
J for diffusive flux ⓘ
x for spatial coordinate ⓘ
validWhen diffusion coefficient is constant in space ⓘ
system is isothermal ⓘ

How these facts were elicited

Referenced by (8)

Full triples — surface form annotated when it differs from this entity's canonical label.

Fourier's law of heat conduction → analogousTo → Fick's first law of diffusion ⓘ
Cottrell equation → relatedTo → Fick's second law of diffusion ⓘ
linked to: Fick's first law of diffusion
Fick's first law of diffusion → relatedTo → Fick's second law of diffusion ⓘ
linked to: Fick's first law of diffusion
Fick's first law of diffusion → relatedTo → Fick's laws of diffusion ⓘ
linked to: Fick's first law of diffusion
Fick's first law of diffusion → relatedTo → Fickian diffusion ⓘ
linked to: Fick's first law of diffusion
Nernst–Planck equation → generalizes → Fick's first law of diffusion ⓘ
Bloch–Torrey equation → relatedTo → Fick's law of diffusion ⓘ
linked to: Fick's first law of diffusion
Randles–Ševčík equation → derivationBasedOn → Fick's laws of diffusion ⓘ
linked to: Fick's first law of diffusion