Oscillating nematic aerogel in superfluid 3He

We present experiments on nematic aerogel oscillating in superfluid \(^3\)He. This aerogel consists of nearly parallel mullite strands and is attached to a vibrating wire moving along the direction of the strands. Previous nuclear magnetic resonance experiments in \(^3\)He confined in similar aerogel sample have shown that the superfluid transition of \(^3\)He in aerogel occurs into the polar phase and the transition temperature (\(T_{ca}\)) is only slightly suppressed with respect to the superfluid transition temperature of bulk \(^3\)He. In present experiments we observed a change in resonant properties of the vibrating wire at \(T=T_{ca}\) and found that below \(T_{ca}\) an additional resonance mode is excited which is coupled to the main resonance.