Centimeter-scale nanomechanical resonators with low dissipation
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arXiv
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| Format: | Preprint |
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2023
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| author | Cupertino, Andrea Shin, Dongil Guo, Leo Steeneken, Peter G. Bessa, Miguel A. Norte, Richard A. |
| author_facet | Cupertino, Andrea Shin, Dongil Guo, Leo Steeneken, Peter G. Bessa, Miguel A. Norte, Richard A. |
| contents | High-aspect-ratio mechanical resonators are pivotal in precision sensing, from macroscopic gravitational wave detectors to nanoscale acoustics. However, fabrication challenges and high computational costs have limited the length-to-thickness ratio of these devices, leaving a largely unexplored regime in nano-engineering. We present nanomechanical resonators that extend centimeters in length yet retain nanometer thickness. We explore this expanded design space using an optimization approach which judiciously employs fast millimeter-scale simulations to steer the more computationally intensive centimeter-scale design optimization. By employing delicate nanofabrication techniques, our approach ensures high-yield realization, experimentally confirming room-temperature quality factors close to theoretical predictions. The synergy between nanofabrication, design optimization guided by machine learning, and precision engineering opens a solid-state path to room-temperature quality factors approaching 10 billion at kilohertz mechanical frequencies -- comparable to the performance of leading cryogenic resonators and levitated nanospheres, even under significantly less stringent temperature and vacuum conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_00611 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Centimeter-scale nanomechanical resonators with low dissipation Cupertino, Andrea Shin, Dongil Guo, Leo Steeneken, Peter G. Bessa, Miguel A. Norte, Richard A. Mesoscale and Nanoscale Physics Applied Physics Quantum Physics High-aspect-ratio mechanical resonators are pivotal in precision sensing, from macroscopic gravitational wave detectors to nanoscale acoustics. However, fabrication challenges and high computational costs have limited the length-to-thickness ratio of these devices, leaving a largely unexplored regime in nano-engineering. We present nanomechanical resonators that extend centimeters in length yet retain nanometer thickness. We explore this expanded design space using an optimization approach which judiciously employs fast millimeter-scale simulations to steer the more computationally intensive centimeter-scale design optimization. By employing delicate nanofabrication techniques, our approach ensures high-yield realization, experimentally confirming room-temperature quality factors close to theoretical predictions. The synergy between nanofabrication, design optimization guided by machine learning, and precision engineering opens a solid-state path to room-temperature quality factors approaching 10 billion at kilohertz mechanical frequencies -- comparable to the performance of leading cryogenic resonators and levitated nanospheres, even under significantly less stringent temperature and vacuum conditions. |
| title | Centimeter-scale nanomechanical resonators with low dissipation |
| topic | Mesoscale and Nanoscale Physics Applied Physics Quantum Physics |
| url | https://arxiv.org/abs/2308.00611 |