Diamond Nanomechanical Resonators Protected by a Phononic Band Gap
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-12-14 |
| Journal | Nano Letters |
| Authors | Xinzhu Li, Ignas Lekavicius, Hailin Wang |
| Institutions | University of Oregon |
| Citations | 5 |
Abstract
Section titled āAbstractāWe report the design, fabrication, and characterization of diamond cantilevers attached to a phononic square lattice. We show that the robust protection of mechanical modes by phononic band gaps leads to a three-orders-of-magnitude increase in mechanical <i>Q</i>-factors, with the <i>Q</i>-factors exceeding 10<sup>6</sup> at frequencies as high as 100 MHz. Temperature-dependent studies indicate that the <i>Q</i>-factors obtained at a few Kelvin are still limited by the materials loss. The high-<i>Q</i> diamond nanomechanical resonators provide a promising hybrid quantum system for spin-mechanics studies.