Dynamic Pressure Sensitive Adhesion in Nematic Phase of Liquid Crystal Elastomers

The correlation between the anomalous mechanical dissipation and pressure-sensitive adhesion in nematic liquid crystalline elastomers (LCEs) is explored, comparing hard glassy soft materials (high low crosslinking density, respectively) versus isotropic genesis. Two significant factors are identified contributing to strong adhesion: intrinsic damping, which high phase, surface roughness, affected by elastomer At same time, it found that energy plays only a minor role adhesion. Theoretical calculations of dynamic carried out summing over full range frequencies dynamic-mechanical master curves data, averaging roughness regimes, results fitting measured data with quantitative accuracy. Finally, strength LCEs altered controlling phase temperature demonstrated.