Abstract

ABSTRACTPolymer stabilization effect to increase the thermal stability of blue phases (BPs) for potential application in flat-panel display has been studied in detail though directly observing the morphology of the polymer network on the substrate formed under different experimental conditions during the polymerization process. The tiny and dense polymer network, in which the diameter of the polymer chain is not greater than 250 nm, is useful for stabilizing the BPI structure. Moreover, these experimental results can be explained by the free-energy density of BPI, where its temperature range depends inversely on the square of the polymer-chain diameter. In terms of the experimental results shown in this study, we can conclude an optimal photo-polymerization process for a wide-temperature-range polymer-stabilized BP.

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