Mechanical mode imaging of a high-Q hybrid hBN/Si$_3$N$_4$ resonator
| Autor: | David Jaeger, Francesco Fogliano, Thibaud Ruelle, Aris Lafranca, Floris Braakman, Martino Poggio |
|---|---|
| Rok vydání: | 2023 |
| Předmět: |
Condensed Matter - Mesoscale and Nanoscale Physics
Mechanical Engineering Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences General Materials Science Bioengineering General Chemistry Physics - Applied Physics Applied Physics (physics.app-ph) Condensed Matter Physics Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.2301.03897 |
| Popis: | We image and characterize the mechanical modes of a 2D drum resonator made of hBN suspended over a high-stress Si$_3$N$_4$ membrane. Our measurements demonstrate hybridization between various modes of the hBN resonator and those of the Si$_3$N$_4$ membrane. The measured resonance frequencies and spatial profiles of the modes are consistent with finite-element simulations based on an idealized geometry. Spectra of the thermal motion reveal that, depending on the degree of hybridization with modes of the heavier and higher-quality-factor Si$_3$N$_4$ membrane, the quality factors and the motional mass of the hBN drum modes can be shifted by orders of magnitude. This effect could be exploited to engineer hybrid drum/membrane modes that combine the low motional mass of 2D materials with the high quality factor of Si$_3$N$_4$ membranes for optomechanical or sensing applications. Comment: 16 pages, 4 figure, 1 supplementary section (6 pages, 3 figures) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|