Permeability in fluid mechanics, materials science and Earth sciences (commonly symbolized as k) is a measure of the ability of a porous material (often...

Materials science is an interdisciplinary field of researching and discovering materials. Materials engineering is an engineering field of finding uses...

solid substance Permeability (earth sciences), a measure of the ability of a material (such as rocks) to transmit fluids Relative permeability, in multiphase...

constructed to be selective in its permeability will determine the rate and the permeability. Many natural and synthetic materials which are rather thick are...

Laboratory experiments: Constant Head Permeability Test, Low-level permeability test, Horizontal permeability test. Field experiments: Free aquifer,...

Permeability Tailoring porous media to control permeability Graphical depiction of different flow rates through materials of differing permeability Fundamentals...

to fabricate a material which can produce negative permeability μeff < 0. Second, negative values for both permittivity and permeability must occur simultaneously...

the permeability of soil with minimum disturbances. In laboratory methods, the degree of disturbances affect the reliability of value of permeability of...

dipoles in the material. The magnetic permeability of diamagnetic materials is less than the permeability of vacuum, μ0. In most materials, diamagnetism...

condensation. Technically, many of these materials are only vapor retarders as they have varying degrees of permeability. Materials have a moisture vapor transmission...

permittivity and permeability of the materials as a whole. In this sense, effective medium approximations are descriptions of a medium (composite material) based...

sense of sticking or adhering. These materials are still used in large quantities as building and engineering materials (including limestone products, cement...

materials selection. A property having a fixed value for a given material or substance is called material constant or constant of matter. (Material constants...

consequence of their substantial magnetic permeability. Magnetic permeability describes the induced magnetization of a material due to the presence of an external...

where μr = 1 + χ is the (dimensionless) relative permeability and μ =μ0μr is the magnetic permeability. Both hard and soft magnets have a more complex...

to the concentration gradient of the permeate, a material's intrinsic permeability, and the materials' mass diffusivity. Permeation is modeled by equations...

self-healing materials are polymers or elastomers, self-healing covers all classes of materials, including metals, ceramics, and cementitious materials. Healing...

membrane. The performance of the membrane depends on permeability and selectivity. Permeability is affected by the penetrant size. Larger gas molecules...

Intestinal permeability is a term describing the control of material passing from inside the gastrointestinal tract through the cells lining the gut wall...

real permittivity and permeability, the relationship between permittivity ε r {\displaystyle \varepsilon _{r}} , permeability μ r {\displaystyle \mu...

permeability of the magnetic path is the same as permeability of free space, μ0. If the solenoid is immersed in a material with relative permeability...

relative permeability of a phase is a dimensionless measure of the effective permeability of that phase. It is the ratio of the effective permeability of that...

Nanomaterials research takes a materials science-based approach to nanotechnology, leveraging advances in materials metrology and synthesis which have...

promising for treating non-polar organic contaminants. However, clay's low permeability means it cannot be used in flow-through PRBs, but have been proposed...

and metals are examples of isotropic materials. Common anisotropic materials include wood (because its material properties are different parallel to and...

cylinders, the effective permeability can be written as the following. (This model is very limited and the effective permeability cannot be less than zero...

permeability (analogous to electric conductivity): P = μ A ℓ {\displaystyle {\mathcal {P}}={\frac {\mu A}{\ell }}} where: μ, permeability of material...

and permeability. These materials obey the laws of physics, but behave differently from normal materials. Metamaterials are artificial materials engineered...

Materials for use in vacuum are materials that show very low rates of outgassing in vacuum and, where applicable, are tolerant to bake-out temperatures...

semipermeable membranes manufactured to provide selectivity with high permeability. Most TFC's are used in water purification or water desalination systems...