Structure factor, anisotropic gels

Gels are very soft and can be easily deformed into anisotropic shapes. In such states, phase transitions and separation are of great interest. Similar problems have been treated in the metallurgical literature [57-59]. In this subsection, we are mainly interested in the structure factor in such deformed states, so we will neglect possible macroscopic instabilities (which can occur if gels are allowed to swell at least in two directions as will be discussed in Sect. 5). 

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