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Parallel Transduction of Nanomechanical Motion Using Plasmonic Resonators
Rutger Thijssen1, Tobias J Kippenberg2, Albert Polman1
1Center for Nanophotonics, FOM Institute AMOLF , Science Park 104, 1098XG Amsterdam, The Netherlands.
ACS Photonics
|February 3, 2015
Summary
This study shows parallel optical readout of nanomechanical resonators using plasmonic resonators. This enables photothermal tuning and actuation of mechanical motion.
Area of Science:
- Nanotechnology
- Optomechanics
- Plasmonics
Background:
- Nanomechanical resonators are crucial for sensing and signal processing.
- Optical transduction methods are needed for high-throughput measurements.
- Plasmonic structures offer unique light-matter interaction capabilities.
Purpose of the Study:
- To demonstrate parallel transduction of mechanical motion in nanomechanical beams.
- To utilize near-field plasmonic resonators for optical readout.
- To explore photothermal effects for tuning and actuation.
Main Methods:
- Fabrication of gold-coated silicon nitride nanomechanical beams.
- Integration of metal-insulator-metal plasmonic resonators.
- Free-space optical readout and photothermal excitation.
- Analysis of mechanical eigenfrequency tuning and parametric amplification.
Main Results:
- Achieved parallel transduction of thermally driven mechanical motion.
- Enabled multi-resonator addressing in a single optical measurement.
- Demonstrated photothermal tuning of resonator eigenfrequencies.
- Observed photothermally driven parametric amplification, indicating actuation.
Conclusions:
- Plasmonic resonators enable efficient parallel optical readout of nanomechanical systems.
- Photothermal effects provide a pathway for tuning and actuation of mechanical resonators.
- This work opens possibilities for integrated plasmonic-mechanical systems.
