dlvr.itMillisecond phonon lifetimes in piezoelectric nanomechanical resonatorsNature Nanotechnology, Published online: 16 October 2026; doi:10.1038/s41565-026-02289-9When defect-mediated losses are mitigated, lithium niobate phononic crystal nanomechanical resonators can have intrinsic phonon lifetimes of up to 21 ms at gigahertz frequencies.
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