3 April 2013 Nonlinear dynamics and thermodynamics of azobenzene polymer networks
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The nonlinear photomechanics and thermodynamics of azobenzene liquid crystal polymer networks is studied to quantify interactions between wavelength dependent molecular conformation changes that occur within a polymer network. The transfer of energy from light to liquid crystals to a polymer network strongly depends on the wavelength and polarization of light where trans or rod shaped azobenzene chromophores convert to a cis or kinked conformation and simultaneously may relax back to the trans state but in a different orientation. This behavior requires an understanding of the dynamic interactions between light and azobenzene molecules and thermodynamics of light-matter interactions. We investigate this behavior by quantifying transmission and absorption of electro-magnetic energy with stored energy within the solid material. This is conducted by introducing a set of optical order parameters coupled to photochemistry that evolve as a function of electro-magnetic radiation.
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William S. Oates, William S. Oates, Jonghoon Bin, Jonghoon Bin, } "Nonlinear dynamics and thermodynamics of azobenzene polymer networks", Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 86890D (3 April 2013); doi: 10.1117/12.2009704; https://doi.org/10.1117/12.2009704

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