Fractal-like Mechanical Resonators with a Soft-Clamped Fundamental Mode

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.


Published in:
Physical Review Letters, 124, 2, 025502
Year:
Jan 16 2020
Publisher:
College Pk, AMER PHYSICAL SOC
ISSN:
0031-9007
1079-7114
Laboratories:




 Record created 2020-03-12, last modified 2020-04-20


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)