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Motivated by the need for new materials and green energy production andconversion processes, a class of mathematical models for liquid crystalelastomers integrated within a theoretical charge pump electrical circuit isconsidered. The charge pump harnesses the chemical and mechanical properties ofliquid crystal elastomers transitioning from the nematic to isotropic phasewhen illuminated or heated to generate higher voltage from a lower voltagesupplied by a battery. For the material constitutive model, purely elastic andneoclassical-type strain energy densities applicable to a wide range ofmonodomain nematic elastomers are combined, while elastic and photo-thermalresponses are decoupled to make the investigation analytically tractable. Byvarying the model parameters of the elastic and neoclassical terms, it is foundthat liquid crystal elastomers are more effective than rubber when used asdielectric material within a charge pump capacitor.

A theoretical model for power generation via liquid crystal elastomers