Mechanical mode imaging of a high-Q hybrid hBN/SiN resonator
arXiv:2301.03897 · doi:10.1021/acs.nanolett.3c00233
Abstract
We image and characterize the mechanical modes of a 2D drum resonator made of hBN suspended over a high-stress SiN membrane. Our measurements demonstrate hybridization between various modes of the hBN resonator and those of the SiN 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 SiN 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 SiN membranes for optomechanical or sensing applications.
arXiv comment16 pages, 4 figure, 1 supplementary section (6 pages, 3 figures)
References in corpus (23)
- 2D materials and van der Waals heterostructures
- Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
- Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
- Negative Thermal Expansion Coefficient of Graphene Measured by Raman Spectroscopy
- Performance of Monolayer Graphene Nanomechanical Resonators with Electrical Readout
- Mechanical Properties of Atomically Thin Boron Nitride and the Role of Interlayer Interactions
- Ultra-coherent nanomechanical resonators via soft clamping and dissipation dilution
- Imaging mechanical vibrations in suspended graphene sheets
- Graphene mechanical oscillators with tunable frequency
- Single-layer MoS2 mechanical resonators
- Nanomechanical Resonators: Toward Atomic Scale
- A general procedure for thermomechanical calibration of nano/micro-mechanical resonators
- High quality-factor mechanical resonators based on WSe2 monolayers
- Fiber-Cavity-Based Optomechanical Device
- Visualizing the motion of graphene nanodrums
- Dynamics of 2D Material Membranes
- Giant Tunable Mechanical Nonlinearity in Graphene-Silicon Nitride Hybrid Resonator
- Analysis of membrane phononic crystals with wide bandgaps and low-mass defects
- Time-domain response of atomically thin nanomechanical resonators
- Motion transduction with thermo-mechanically squeezed graphene resonator modes
- Strain-dependent damping in nanomechanical resonators from thin crystals
- Deviation from the normal mode expansion in a coupled graphene-nanomechanical system
- Dynamical backaction in an ultrahigh-finesse fiber-based microcavity