Imprint materials for optical applications can have a multitude of different properties, dictated by the function they must fulfill. Apart from optical properties such as refractive index, wavelength-dependent transmission or scattering behavior, a frequently neglected parameter is the thermo-mechanical behavior. We will discuss the importance to balance all these properties to achieve the best performance in different application and production scenarios, based on simulations and experimental tests.
First focus when developing imprint materials for optical applications is on their optical properties. However other properties are also key. Here we focus on the thermo-mechanical properties of polymer-based imprint materials and their importance for various applications. Special emphasis will be put on thermo-mechanical stress induced by thermal mismatch. We’ll compare thermo-mechanical bulk properties of such materials with results from FEM simulations and experimental tests.
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