surface free energy sentence in Hindi
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- Surface stress can be derived from surface free energy as followed:
- The method is particularly suitable for solids with high surface free energy on which liquids spread out.
- Surface stresses normally calculated by calculating the surface free energy and its derivative with respect to elastic strain.
- surface free energy ) depends both on surface tension and its derivative with temperature at constant pressure by the relationship.
- Definition of surface free energy is seemly the amount of reversible work dw performed to create new area dA of surface, expressed as:
- In summary, the formation of the corrugations increases the surface free energy and the gravitational energy of the liquid, but reduces the magnetic energy.
- Most of calculations are done at temperature of 0 K . Following are tables of surface stress and surface free energy values of metals and semiconductors.
- The driving force for a change in the surface concentration associated with a contraction of the surface is proportional to the difference between surface stress and surface free energy.
- This is an essential requirement for pigment dispersions; for wetting to be effective, the surface tension of the vehicle must be lower than the surface free energy of the pigment.
- Here \ sigma ( R ) denotes the surface tension ( or ( excess ) surface free energy ) of a liquid drop with radius R, whereas \ sigma denotes its value in the planar limit.
- Due to the chemical structure of liquid surface phase, the term " ? / " e always equals to zero meaning that surface free energy won t change even if the surface is being stretched.
- He also appreciated that " an anisotropic surface free energy implied a non-spherical equilibrium shape ", which should be thermodynamically defined as " the shape which minimizes the total surface free energy ".
- He also appreciated that " an anisotropic surface free energy implied a non-spherical equilibrium shape ", which should be thermodynamically defined as " the shape which minimizes the total surface free energy ".
- Membrane surface chemistry creates very important properties such as hydrophilicity or hydrophobicity ( related to surface free energy ), presence of ionic charge, membrane chemical or thermal resistance, binding affinity for particles in a solution, and biocompatibility ( in case of bioseparations ).
- Subsequently, when the surface coverage by the surfactants increases, the surface free energy ( surface tension ) decreases and the surfactants start aggregating into micelles, thus again decreasing the system's free energy by decreasing the contact area of hydrophobic parts of the surfactant with water.
- Such an inequality of molecular forces induces continuous movement of molecules from the inside to the surface, which means the surface molecules has extra energy, which is called surface free energy or potential energy, and such an energy acting on reduced unit area is defined as surface tension.
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