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In electrochemistry, region surrounding an electrode in solution
In electrochemistry, the diffusion layer, according to IUPAC, is defined as the "region in the vicinity of an electrode where the concentrations are different
Diffusion_layer
Properties of the operation of a secure cipher
block ciphers mostly follow the confusion layer/diffusion layer model, with the efficiency of the diffusion layer estimated using the so-called branch number
Confusion_and_diffusion
Power generation technology
(MEA) which include the electrodes, electrolyte, catalyst, and gas diffusion layers. An ink of catalyst, carbon, and electrode are sprayed or painted onto
Proton-exchange membrane fuel cell
Proton-exchange_membrane_fuel_cell
normal pulse voltammetry. In squarewave voltammetric analyses, the diffusion layer is not renewed between potential cycles. Thus, it is not possible/accurate
Squarewave_voltammetry
Mathematical descriptions of molecular diffusion
Fick's laws of diffusion describe diffusion and were first posited by Adolf Fick in 1855 on the basis of largely experimental results. They can be used
Fick's_laws_of_diffusion
Electrical impedance which models diffusion in dieletric spectroscopy
semi-infinite linear diffusion, that is, unrestricted diffusion to a large planar electrode. If the thickness of the diffusion layer is known, the finite-length
Warburg_element
Cryptographic hash function
} is the non-linear layer; π {\displaystyle \pi } is the cyclical permutation; θ {\displaystyle \theta } is the diffusion layer; σ {\displaystyle \sigma
Whirlpool_(hash_function)
Image-generating machine learning model
Stable Diffusion is a deep learning, text-to-image model released in 2022 based on diffusion techniques. The generative artificial intelligence technology
Stable_Diffusion
functional layers arranged from the outermost to the innermost: the end plate or bipolar plates, the flow field, the gas diffusion layer (GDL) or porous
Unitized regenerative fuel cell
Unitized_regenerative_fuel_cell
Diffusion model over latent embedding space
The Latent Diffusion Model (LDM) is a diffusion model architecture developed by the CompVis (Computer Vision & Learning) group at LMU Munich. Introduced
Latent_diffusion_model
Electronic circuit formed on a small, flat piece of semiconductor material
process, a transistor is formed wherever the gate layer (polysilicon or metal) crosses a diffusion layer (this is called "the self-aligned gate"). Capacitive
Integrated_circuit
A diffusion barrier is a thin layer (usually micrometres thick) of metal usually placed between two other metals. It is done to act as a barrier to protect
Diffusion_barrier
Transport of dissolved species from the highest to the lowest concentration region
Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of
Diffusion
Equation in electrochemistry
long time scales, buildup of the diffusion layer causes a shift from a linearly dominated to a radially dominated diffusion regime, which causes another deviation
Cottrell_equation
Environmental chemistry technique
layer and filter membrane (i.e. the "diffusion layer"). The previously determined diffusion coefficient of the analyte in the type of diffusion layer
Diffusive gradients in thin films
Diffusive_gradients_in_thin_films
Method of analyzing electrochemical reactions
The first shape is dependent on the diffusion layer. If the analyte is continuously stirred, the diffusion layer will be a constant width and produce
Voltammetry
Method of analyzing electrochemical reactions
experiment only samples a small portion of the solution, i.e., the diffusion layer at the electrode surface. The utility of cyclic voltammetry is highly
Cyclic_voltammetry
Type of hardening with nitrogen and carbon using a salt bath
The surface formed from the reaction has a compound layer and a diffusion layer. The compound layer formed consists of iron, nitrogen, and oxygen and is
Ferritic_nitrocarburizing
American chemist (1866–1936)
concentration of the solid in the diffusion layer surrounding the solid. D is the diffusion coefficient. L is the diffusion layer thickness. Who's Who in Science
Arthur_Amos_Noyes
Converts light into current
or P-type diffusion layer, respectively, over a P-type or N-type (respectively) substrate layer, such that the intermediate diffusion layer can be fully
Photodiode
Insulating region in a semiconductor
depletion region, also called depletion layer, depletion zone, junction region, space charge region, or space charge layer, is an insulating region within a
Depletion_region
Tissue lining the surfaces of organs in animals
protective functions. Epithelial layers contain no blood vessels (avascular), so they must receive nourishment via diffusion of substances from the underlying
Epithelium
Splitting of water using a semipermeable membrane
Li, Haonan; Lin, Xiao (2025). "Catalytic electrode comprising a gas diffusion layer and bubble-involved mass transfer in anion exchange membrane water
Anion exchange membrane electrolysis
Anion_exchange_membrane_electrolysis
Equation describing the flow of a fluid through a porous medium
permeability and Knudsen diffusivity measurements in PEMFC gas diffusion layers and micro porous layers". Journal of Power Sources. 206: 153–160. Bibcode:2012JPS
Darcy's_law
Thin-film deposition technique that deposits one 1-atom thick layer at a time
S.; Juhanoja, J.; Besling, W.F.A. (2002). "Diffusion Barrier Deposition on a Copper Surface by Atomic Layer Deposition". Chemical Vapor Deposition. 8 (4):
Atomic_layer_deposition
better mixing of the solution and in reducing the thickness of the diffusion boundary layer, which is defined as the region in the vicinity of an electrode
Concentration_polarization
The small size of UMEs limits mass transfer, which give them large diffusion layers and small overall currents at typical electrochemical potentials. These
Ultramicroelectrode
Movement of a drug into the bloodstream or lymph
concentration of the solid in the diffusion layer surrounding the solid. D is the diffusion coefficient. L is the diffusion layer thickness. As can be inferred
Absorption_(pharmacology)
Properties of a thermal boundary layer
is not determined by thermal diffusion, but instead, it is random fluctuations in the outer region of the boundary layer of the fluid that is the driving
Thermal boundary layer thickness and shape
Thermal_boundary_layer_thickness_and_shape
Solid-state welding technique
weld "sandwiches" of alternating layers of thin metal foil, and metal wires or filaments. Currently, the diffusion bonding method is widely used in the
Diffusion_bonding
Type of microbiology test
The disk diffusion test (also known as the agar diffusion test, Kirby–Bauer test, disc-diffusion antibiotic susceptibility test, disc-diffusion antibiotic
Disk_diffusion_test
Equation characterising electrochemical kinetics
}}c^{*}} where: Deff is the effective diffusion coefficient (taking tortuosity into account, if any); δ is the diffusion layer thickness; c* is the concentration
Butler–Volmer_equation
Molecular interface between a surface and a fluid
double-layer. This model, while a good foundation for the description of the interface, does not consider important factors including diffusion/mixing
Double layer (surface science)
Double_layer_(surface_science)
Topics referred to by the same term
Language GNU Data Language Google Developers Live Dirasha language Gas diffusion layer of a proton-exchange membrane fuel cell Gas Dynamics Laboratory, a
GDL
Gas layer surrounding Earth
boundary layer is the part of the troposphere that is closest to Earth's surface and is directly affected by it, mainly through turbulent diffusion. During
Atmosphere_of_Earth
Part of a PEM fuel cell
2013-04-19. Ge, Jiabin; Higier, Andrew; Liu, Hongtan (2006). "Effect of gas diffusion layer compression on PEM fuel cell performance". Journal of Power Sources
Membrane_electrode_assembly
Particle detector for visualizing ionizing radiation
as Arthur Compton received half the prize for the Compton Effect). The diffusion cloud chamber was developed in 1936 by Alexander Langsdorf. This chamber
Cloud_chamber
Innermost Galilean moon of Jupiter
collapse during eclipse is limited somewhat by the formation of a diffusion layer of sulfur monoxide in the lowest portion of the atmosphere, but the
Io_(moon)
Momentum diffusion most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state
Momentum_diffusion
Liu, Meicheng; Sim, Siang Meng (25 July 2016). "Branch Number of the Diffusion Layer". In Thomas Peyrin (ed.). Fast Software Encryption: 23rd International
Branch_number
Alonizing is a diffusion metallizing process in that it is a thermochemical treatment that involves enriching the surface layer of an object with one or
Alonizing
of the solid in the diffusion layer surrounding the solid. D is the diffusion coefficient. L is the thickness of the diffusion layer. As the solution is
Liberation_(pharmacology)
Concept from evolutionary biology
differential diffusion of chemical species and chemical reaction. The instability mechanism is surprising because a pure diffusion, such as molecular diffusion, would
Turing_pattern
Method of chemical analysis
square root of time (due to the increasing dimensions of the Nernst diffusion layer). The exponential decay of the capacitive current is much more rapid
Polarography
Type of transistor
structures by simultaneous diffusion of donors and acceptors of appropriately different surface concentrations. The first n layer (the emitter) was formed
Diffused_junction_transistor
Algorithm for modelling sequential data
converted into a vector via lookup from a word embedding table. At each layer, each token is then contextualized within the scope of the context window
Transformer_(deep_learning)
Finely powdered platinum used as a catalyst and for coating Pt electrodes
using an ultrasonic nozzle or hot-pressed onto the membrane or gas diffusion layer. A suspension of platinum black and carbon powder in ethanol–water
Platinum_black
Ionized part of Earth's upper atmosphere
influences radio propagation to distant places on Earth. Travel through this layer also affects GPS signals, deflecting their paths and delaying their arrival
Ionosphere
Device measuring ionizing radiation
several hundred micrometers for a Li diffusion layer and a few tenths of a micrometer for a B implantation layer. The major drawback of germanium detectors
Semiconductor_detector
Model of cell membranes
individual lipid molecules undergo free lateral diffusion within each of the layers of the lipid membrane. Diffusion occurs at a high speed, with an average lipid
Fluid_mosaic_model
the electrode surface. The optical path length coincides with the diffusion layer thickness, which is usually in the order of micrometers. This arrangement
UV-Vis absorption spectroelectrochemistry
UV-Vis_absorption_spectroelectrochemistry
Digital image editing technique
Layers are used in digital image editing to separate different elements of an image. A layer can be compared to a transparency on which imaging effects
Layers (digital image editing)
Layers_(digital_image_editing)
Device that generates flow using an electric field
application of this is removing liquid flooding water from channels and gas diffusion layers and direct hydration of the proton exchange membrane in the membrane
Electroosmotic_pump
Family of block ciphers
diagram: a key-mixing stage, a substitution layer, another key-mixing stage, and finally a diffusion layer. In the first key-mixing stage, the plaintext
Secure and Fast Encryption Routine
Secure_and_Fast_Encryption_Routine
Class of computational fluid dynamics methods
gas-phase tortuosity, and gas permeability in a simulated PEM gas diffusion layer". International Journal of Energy Research. 39 (11): 1528–1536. Bibcode:2015IJER
Lattice_Boltzmann_methods
Thin layer of material
atomic-layer epitaxy (atomic layer deposition). Nucleation can be modeled by characterizing surface process of adsorption, desorption, and surface diffusion
Thin_film
Part of the stomach
gel-like mucous layer which traps a thin layer of bicarbonate-rich fluid beneath it. The mucus layer thus normally significantly slows diffusion of H+ ions
Gastric_mucosal_barrier
Type of semiconductor current
_{\text{e}}nE+eD_{\text{e}}{\frac {dn}{dx}}=0} To derive the diffusion current in a semiconductor diode, the depletion layer must be large compared to the mean free path
Diffusion_current
Tissue type
is a single layer of flattened, polygonal cells that line various structures in the body. This epithelium facilitates passive diffusion and filtration
Simple_squamous_epithelium
Type of feedforward neural network
perceptron model, consisting of an input layer, a hidden layer with randomized weights that did not learn, and an output layer with learnable connections. In 1962
Multilayer_perceptron
Food preparation containers
thin stainless layer on the cooking surface, a thick core of aluminum to provide structure and improved heat diffusion, and a foil layer of copper on the
Cookware_and_bakeware
Soft outer covering organ of vertebrates
vessels, and cells in the deepest layers are nourished by diffusion from blood capillaries extending to the upper layers of the dermis. The epidermis and
Skin
Two-dimensional laminar boundary layer that forms on a semi-infinite plate
a Blasius boundary layer (named after Paul Richard Heinrich Blasius) describes the steady two-dimensional laminar boundary layer that forms on a semi-infinite
Blasius_boundary_layer
Gravimetric technique
hydration level is too high, excess water can flood the pores in the gas diffusion layer and impede mass transport within the electrode structure. For these
Dynamic_vapor_sorption
Process creating a thin layer of (usually) silicon dioxide
In microfabrication, thermal oxidation is a way to produce a thin layer of oxide (usually silicon dioxide) on the surface of a wafer. The technique forces
Thermal_oxidation
convective planetary boundary layer (CPBL), also known as the daytime planetary boundary layer (or simply convective boundary layer, CBL, when in context),
Convective planetary boundary layer
Convective_planetary_boundary_layer
Equivalent circuit for an electrochemical reaction
interfacial electrochemical reactions in presence of semi-infinite linear diffusion of electroactive particles to flat electrodes. A simple model for an electrode
Randles_circuit
Hop diffusion is a non-Brownian diffusion of proteins and lipid molecules within the plasma membrane. Hop diffusion occurs due to the discontinuity of
Hop_diffusion
Type of fuel cell
electro-oxidation process in the catalyst layer and improving the structure of the catalyst and gas diffusion layers (e.g. ), and (c) optimizing the design
Direct_methanol_fuel_cell
Synthesis of chemical compounds in an electrochemical cell
the working electrode (stirring is usually necessary to decrease the diffusion layer around the electrode). This is not the case under constant current
Electrosynthesis
Feistel network based block cipher
operations. The cipher also uses input and output key whitening. The diffusion layer uses a linear transformation based on a matrix with a branch number
Camellia_(cipher)
Technique of scanning probe microscopy
the oxygen diffusion equilibrium by local reduction of oxygen in the aqueous layer, thereby eliciting diffusion across the monolayer. Diffusion dynamics
Scanning electrochemical microscopy
Scanning_electrochemical_microscopy
Hollow cavity found in the lungs
continue to develop until 3 years of age. To create a thinner diffusion barrier, the double-layer capillary network fuse into one network, each one closely
Pulmonary_alveolus
Electrodes with a conjunction of a solid, liquid and gaseous interface
continuously. The principle of gas diffusion is illustrated in this diagram. The so-called gas distribution layer is located in the middle of the electrode
Gas_diffusion_electrode
Manhattan Project codename for a program to produce enriched uranium
program to produce enriched uranium for atomic bombs using the gaseous diffusion method. Originally the codename for the product, over time it came to
K-25
Biological membrane that separates the interior of a cell from its outside environment
lipid molecules are free to diffuse and exhibit rapid lateral diffusion along the layer in which they are present. However, the exchange of phospholipid
Cell_membrane
Class of artificial neural networks
a global pooling layer, also known as readout layer, provides fixed-size representation of the whole graph. The global pooling layer must be permutation
Graph_neural_network
Machine learning technique
success. Batch normalization (BatchNorm) operates on the activations of a layer for each mini-batch. Consider a simple feedforward network, defined by chaining
Normalization (machine learning)
Normalization_(machine_learning)
Airtight seal which joins glass and metal surfaces
possible to use silver plating, but then an additional gold layer is necessary as an oxygen diffusion barrier to prevent the formation of iron oxide. While
Glass-to-metal_seal
Type of artificial neural network
{\displaystyle k} th nodes, which represent the output layer. So to change the hidden layer weights, the output layer weights change according to the derivative of
Feedforward_neural_network
Metric used to assess image quality
StyleGAN1 and StyleGAN2 networks, and diffusion models. The FID attempts to compare images visually through deep layers of an inception network. More recent
Fréchet_inception_distance
Diffusion flame
A pool fire is a type of diffusion flame where a layer of volatile liquid fuel is evaporating and burning. The fuel layer can be either on a horizontal
Pool_fire
Diffusion process with a non-linear relationship to time
Anomalous diffusion is a diffusion process with a non-linear relationship between the mean squared displacement (MSD), ⟨ r 2 ( τ ) ⟩ {\displaystyle \langle
Anomalous_diffusion
Component of stress coplanar with a material cross section
the development of the diffusion boundary layer, in which the fast electro-diffusion reaction rate is controlled only by diffusion. The resolution of the
Shear_stress
technologies. The advantages are as follows: significant thinning of the diffusion layer thickness (δ) at the electrode surface; increase in electrodeposit/electroplating
Sonoelectrochemistry
Ratio of a fluid's kinematic viscosity to mass diffusivity
hydrodynamic layer and mass-transfer boundary layer. It is defined as: S c = ν D = μ ρ D = viscous diffusion rate (molecular) mass diffusion rate = P e
Schmidt_number
Process in plasma physics
the small diffusion region. The resistivity of the current layer allows magnetic flux from either side to diffuse through the current layer, cancelling
Magnetic_reconnection
Mixing of fluids due to eddy currents
In fluid dynamics, eddy diffusion, eddy dispersion, or turbulent diffusion is a process by which fluid substances mix together due to eddy motion. These
Eddy_diffusion
Atmospheric phenomenon
and a much larger springtime decrease in stratospheric ozone (the ozone layer) around Earth's polar regions. The latter phenomenon is referred to as the
Ozone_depletion
The grain boundary diffusion terms the free migration of atoms in free atomic lattice spaces. This is based on polycrystalline layers and its boundaries
Thermocompression_bonding
High-capacity electrochemical capacitor
Electrostatic double-layer capacitors (EDLCs) use carbon electrodes or derivatives with much higher electrostatic double-layer capacitance than electrochemical
Supercapacitor
Machine learning model
human-drawn art. Text-to-image models are generally latent diffusion models, which perform the diffusion process in a compressed latent space rather than directly
Text-to-image_model
electrocatalyst, CsH2PO4 electrolyte, second electrocatalyst, and the final gas diffusion layer. As is typical for most fuel cell systems, the entire cell sandwich
Solid_acid_fuel_cell
Method of casting in manufacturing
occur. For situations where the particle concentration bleeds into the diffusion layer, both the actual and freezing temperature dip below the equilibrium
Freeze-casting
Mechanics concept
Rotational diffusion is the rotational movement which acts upon any object such as particles, molecules, atoms when present in a fluid, by random changes
Rotational_diffusion
Category of enzyme
phospholipid molecules between the two layers, or leaflets, that comprise the membrane. This is called transverse diffusion, also known as "flip-flop" transition
Flippase
Diffusion coefficient of a diffusant along a grain boundary
measure grain boundary diffusion coefficients was suggested by Fisher. In the Fisher model, a grain boundary is represented as a thin layer of high-diffusivity
Grain boundary diffusion coefficient
Grain_boundary_diffusion_coefficient
Neural network technology
networks, a convolutional layer is a type of network layer that applies a convolution operation to the input. Convolutional layers are some of the primary
Convolutional_layer
Differential diffusion
the interface between two metals that occurs due to the difference in diffusion rates of the metal atoms. The effect can be observed, for example, by
Kirkendall_effect
Machine learning model for vision processing
been used for image generation as backbones for GAN and for diffusion models (diffusion transformer, or DiT). DINO has been demonstrated to learn useful
Vision_transformer
DIFFUSION LAYER
DIFFUSION LAYER
Girl/Female
Biblical
Branch, layer, lining.
Girl/Female
Biblical
Effusion of blood.
Biblical
effusion of blood
Surname or Lastname
English
English : habitational name from any of three places in Essex – Layer Breton, Layer de la Haye, and Layer Marney – all named from a river name, Leire, or from Leire in Leicestershire, also named from an identical river name. The river name is of Celtic origin and is probably the base of the tribal name Ligore, found in the place name Leicester.English : nickname or status name from Anglo-Norman French le eyr ‘the heir’. Compare Ayer.English : occupational name for a stone layer, Middle English leyer; the job of the layer was to position the stones worked by the masons.German : habitational name for someone from any of the various placed named Lay, in the Rhineland and Bavaria.
Surname or Lastname
English
English : occupational name for a layer of paving, from Middle English, Old French pavier ‘paver’, an agent derivative of Old French paver ‘to pave’ (though the Old French verb may be a back-formation from pavement ‘laid floor’).
Surname or Lastname
English
English : probably a variant of Lothrop. Alternatively, it may be a habitational name from Layerthorpe in York, which is named from Old Norse leirr ‘clay’ or leira ‘clayey place’ + þorp ‘outlying farmstead’.
Boy/Male
Biblical
Diffusion; inclination; theft.
Biblical
the effusion of them; a high heap;watchful;
Boy/Male
English American
Tile layer, or a. An English surname frequently used as a given name.
Girl/Female
Afghan, African, American, Arabic, Assamese, Chinese, French, Gujarati, Hebrew, Hindu, Indian, Iranian, Kannada, Marathi, Muslim, Parsi, Pashtun, Sindhi, Spanish, Swahili, Tamil
Layer; Peaceful; Safe; Whole; To be Safe; Beautiful Woman; Sweetheart
Biblical
effusion; inclination; theft
Girl/Female
Andhra, Gujarati, Hindu, Indian, Marathi, Oriya, Punjabi, Sikh, Tamil, Telugu
Radiance; Diffusing Light; Goddess Lakshmi; Money; Bright Light; Beautiful; Intelligent; Thankful; Modest
Girl/Female
Muslim
The effusion of them, A high heap
Boy/Male
English American
Tile layer, or a. An English surname frequently used as a given name.
Girl/Female
Biblical
Branch, layer, twining.
Boy/Male
Christian, German, Indian
The Effusion of them; A High Heap
Surname or Lastname
English
English : habitational name from any of various places in northern France named with the Germanic element lÄr ‘clearing’.English : variant of Layer.English : nickname from Old English hlÄ“or ‘cheek’, ‘face’Irish : reduced Anglicization of Gaelic Mac Giolla Uidhir ‘son of the swarthy lad’ or ‘son of the servant of Odhar’, a byname from odhar (genitive uidhir) ‘dun-colored’, ‘weatherbeaten’. Compare McAleer.
Boy/Male
Biblical
Diffusion; inclination; theft.
Surname or Lastname
English
English : occupational name for a maker or layer of tiles, from an agent derivative of Middle English tile ‘tile’. In the Middle Ages tiles were widely used in floors and pavements, and to a lesser extent in roofing, where they did not really come into their own until the 16th century.
Boy/Male
Indian, Telugu
Radiance; Diffusing Light
DIFFUSION LAYER
DIFFUSION LAYER
Boy/Male
Chinese, Christian, Finnish, German, Greek, Swedish
Gift; New
Girl/Female
Indian
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Faultless
Female
Egyptian
, mother of the sculptor Abet.
Girl/Female
Greek
Light.
Boy/Male
Chinese, French, German, Hebrew, Lebanese
The Lord will Help; The Highest; The Lord is My God; God is My Help; High
Boy/Male
Indian, Punjabi, Sikh
God; Lord Shiva
Boy/Male
English
Old/wise ruler.
Boy/Male
American, Anglo, British, English
From the Crane Estate
Girl/Female
Scandinavian
Hero's daughter.
DIFFUSION LAYER
DIFFUSION LAYER
DIFFUSION LAYER
DIFFUSION LAYER
DIFFUSION LAYER
n.
A decoction or infusion.
a.
Diffusing odor or scent; fragrant.
n.
The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.
adv.
In a diffusive manner.
a.
Having the quality of diffusing; capable of spreading every way by flowing; spreading widely; widely reaching; copious; diffuse.
n.
The emission and diffusion of rays of light.
n.
A blending of one color into another; the spreading of one color over another, as on the feathers of birds.
n.
That with which a thing is suffused.
n.
Act or state of swimming; suffusion.
n.
The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.
n.
Infusion.
a.
Expansive; diffusive.
a.
Prepared by diffusion through an animal membrane; as, dialyzed iron.
n.
The act of pouring out; as, effusion of water, of blood, of grace, of words, and the like.
n.
A flowing in; infusion.
v. t.
The act of infusing, pouring in, or instilling; instillation; as, the infusion of good principles into the mind; the infusion of ardor or zeal.
n.
One opposed to the diffusion of knowledge; an obscuriantist.
n.
The act or process of suffusing, or state of being suffused; an overspreading.
a.
Having power to diffuse itself; diffusing itself.
n.
Effusion; loss.