Saved in:
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.04382 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914179637575680 |
|---|---|
| author | Kaya, Onurcan Pantuso, Niccolo Scalise Galli, Marco De Ponti, Jacopo M. Maggioli, Tommaso Pavesi, Davide Ghosh, Siddhartha Frangi, Attilio Colombo, Luca Davaji, Benyamin Rinaldi, Matteo Horsley, David Cassella, Cristian |
| author_facet | Kaya, Onurcan Pantuso, Niccolo Scalise Galli, Marco De Ponti, Jacopo M. Maggioli, Tommaso Pavesi, Davide Ghosh, Siddhartha Frangi, Attilio Colombo, Luca Davaji, Benyamin Rinaldi, Matteo Horsley, David Cassella, Cristian |
| contents | In recent decades, microelectromechanical systems (MEMS)-based gyroscopes have been employed to meet positioning and navigation demands of a plethora of commercially available devices. Most of such gyroscopes rely on electrostatic actuators with nanometer-scale air gaps$\unicode{x2013}$an architecture that enables large particle velocities in a proof mass and, consequently, high Coriolis-force sensitivity to angular velocity$\unicode{x2013}$but is inherently susceptible to damage under shock and vibration. This vulnerability is typically mitigated by purposely reducing gyroscopic sensitivity, thereby compromising readout accuracy. Microacoustic gyroscopes, by contrast, offer greater resilience to shock and vibration but currently exhibit significantly lower sensitivities. This limitation stems from the low dynamic compliance of the modes they employ$\unicode{x2013}$typically Lamb or Rayleigh modes$\unicode{x2013}$which restricts their maximum achievable particle velocity. This work presents a piezoelectric microacoustic device that overcomes this fundamental constraint by harnessing a topological interface state at the boundary between two microscale metamaterial structures. We theoretically and experimentally show that this state exhibits much higher modal compliance than Lamb or Rayleigh modes. This enables record-high particle velocities (>51 m/s) never reached, due to material limits, by any previously demonstrated piezoelectric gyroscope. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_04382 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Toward Enhanced Inertial Sensing via Dynamically Soft Topological States in Piezoelectric Microacoustic Metamaterials Kaya, Onurcan Pantuso, Niccolo Scalise Galli, Marco De Ponti, Jacopo M. Maggioli, Tommaso Pavesi, Davide Ghosh, Siddhartha Frangi, Attilio Colombo, Luca Davaji, Benyamin Rinaldi, Matteo Horsley, David Cassella, Cristian Applied Physics In recent decades, microelectromechanical systems (MEMS)-based gyroscopes have been employed to meet positioning and navigation demands of a plethora of commercially available devices. Most of such gyroscopes rely on electrostatic actuators with nanometer-scale air gaps$\unicode{x2013}$an architecture that enables large particle velocities in a proof mass and, consequently, high Coriolis-force sensitivity to angular velocity$\unicode{x2013}$but is inherently susceptible to damage under shock and vibration. This vulnerability is typically mitigated by purposely reducing gyroscopic sensitivity, thereby compromising readout accuracy. Microacoustic gyroscopes, by contrast, offer greater resilience to shock and vibration but currently exhibit significantly lower sensitivities. This limitation stems from the low dynamic compliance of the modes they employ$\unicode{x2013}$typically Lamb or Rayleigh modes$\unicode{x2013}$which restricts their maximum achievable particle velocity. This work presents a piezoelectric microacoustic device that overcomes this fundamental constraint by harnessing a topological interface state at the boundary between two microscale metamaterial structures. We theoretically and experimentally show that this state exhibits much higher modal compliance than Lamb or Rayleigh modes. This enables record-high particle velocities (>51 m/s) never reached, due to material limits, by any previously demonstrated piezoelectric gyroscope. |
| title | Toward Enhanced Inertial Sensing via Dynamically Soft Topological States in Piezoelectric Microacoustic Metamaterials |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2512.04382 |