Anisotropy interfacial energy

Lennard-Jones and inverse-power repulsive potentials (Davidchack and Laird, 2005). Using these simulations, they were further able to show how both the magnitude and anisotropy in the surface or interfacial energy scale with potential. 

The analogy with the interfacial energy is more appropriate since dislocations, like free surfaces, have an anisotropy which leads to the conclusion that the energy cost for a small excursion from some flat reference state depends upon the orientation of that reference state. However, the analogy between dislocations and interfaces is imperfect since models of this type have an inherent locality assumption which is exceedingly fragile. To explore this further, we note that in... 

To observe the equilibrium shape of a crystal experimentally, it is necessary to confirm that the crystal one wants to observe exhibits such a shape. Since the equilibrium shape of a crystal in a matrix is the same as the equilibrium shape of the matrix entrapped within the crystal, the equilibrium crystal shape can be determined by observing the shape of the entrapped matrix. If a number of randomly oriented grains exhibit an equilibrium shape, the shape can also be determined stereographically from the crystal plane orientations of the grains and the directions of the grain interfaces on a planar section that can be obtained by the electron backscattered diffraction technique. For metals for which the anisotropy in interfacial energy is low at their processing... 

J J. Hoyt et al., Method for computing the anisotropy of the solid-liquid interfacial free energy. Phys. Rev. Lett. 86, 5530-5533 (2001)... 

The general thermodynamic requirement for the stability of an interface between two phases is a positive - Gibbs energy of formation, because otherwise the interface would either fluctuate or disappear. Since the molecular forces on either side of an interface possess a specific anisotropy the structure of the utmost surface layers differs from that inside the phases (see -> double layer). For these interfacial regions the term -> interphase is also used. 

It is worth noting that water/oil interfacial structures would be governed by various factors, so that a complementary study other than fluorescence dynamic anisotropy is required to obtain further detailed information about the characteristics at a water/oil interface. As a new and novel approach, therefore, excitation energy transfer d3mamics and the relevant structural (fractal) dimension analysis were introduced to elucidate the structure of a water/oil interface [4],... 

Although the structural differences between the water/CClq and water/DCE interfaces are not so large, the chemical and/or physical nature of the organic phase itself reflects on the photophysical properties of a probe molecule, indicating the novelty of the present experimental approaches. Systematic investigations are important to reveal factors governing structural and physical characteristics of water/oil interfaces. Therefore, we introduced fluorescence dynamic anisotropy and excitation energy transfer measurements to other water/oil interfacial systems the data are summarized in Table 12.3. The results are discussed in terms of the relationship between the interfacial stracture and the polarity at the water/oil interfaces (Section 12.6). 

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