Dynamic manipulation of nanomechanical resonators in the high-amplitude regime and non-volatile mechanical memory operation
| Autor: | Menno Poot, Hong X. Tang, Mo Li, Mahmood Bagheri, Wolfram P. H. Pernice |
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| Rok vydání: | 2011 |
| Předmět: |
Phonon
Transducers Biomedical Engineering Bioengineering Nanotechnology law.invention Resonator Motion Singularity law General Materials Science Electrical and Electronic Engineering Quantum Physics Nanoelectromechanical systems business.industry Optical Devices Equipment Design Micro-Electrical-Mechanical Systems Condensed Matter Physics Atomic and Molecular Physics and Optics Nanostructures Equipment Failure Analysis Nonlinear system Transducer Nonlinear Dynamics Optical cavity Optoelectronics Computer-Aided Design Phonons business |
| Zdroj: | Nature nanotechnology. 6(11) |
| ISSN: | 1748-3395 |
| Popis: | The ability to control mechanical motion with optical forces has made it possible to cool mechanical resonators to their quantum ground states. The same techniques can also be used to amplify rather than reduce the mechanical motion of such systems. Here, we study nanomechanical resonators that are slightly buckled and therefore have two stable configurations, denoted 'buckled up' and 'buckled down', when they are at rest. The motion of these resonators can be described by a double-well potential with a large central energy barrier between the two stable configurations. We demonstrate the high-amplitude operation of a buckled resonator coupled to an optical cavity by using a highly efficient process to generate enough phonons in the resonator to overcome the energy barrier in the double-well potential. This allows us to observe the first evidence for nanomechanical slow-down and a zero-frequency singularity predicted by theorists. We also demonstrate a non-volatile mechanical memory element in which bits are written and reset by using optomechanical backaction to direct the relaxation of a resonator in the high-amplitude regime to a specific stable configuration. |
| Databáze: | OpenAIRE |
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