Self-similar structures occur naturally and have been employed to engineer exotic physical properties. We show that acoustic modes of a fractal-like system of tensioned strings can display increased mechanical quality factors due to the enhancement of dissipation dilution. We describe a realistic resonator design in which the quality factor of the fundamental mode is enhanced by as much as 2 orders of magnitude compared to a simple string with the same size and tension. Our findings can open new avenues in force sensing, cavity quantum optomechanics, and experiments with suspended test masses.

中文翻译：

---

具有软钳位基本模式的分形机械谐振器。

自相似的结构是自然发生的，并已被用来设计奇异的物理特性。我们表明，由于耗散稀释的增强，张紧弦的分形样系统的声学模式可以显示出增加的机械品质因数。我们描述了一种现实的谐振器设计，其中与具有相同大小和张力的简单弦相比，基本模式的品质因数提高了2个数量级。我们的发现可以为力感测，腔体量子光力学和具有悬浮测试质量的实验开辟新途径。