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Updated: May 25, 2026
06:51
Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
Published on: August 21, 2018
Oscillatory energy exchange between waves coupled by a dynamic artificial crystal
A D Karenowska1, J F Gregg, V S Tiberkevich
1Department of Physics, Clarendon Laboratory, University of Oxford, OX1 3PU Oxford, United Kingdom. a.karenowska@physics.ox.ac.uk
Physical Review Letters
|February 7, 2012
Summary
Scientists demonstrated controllable energy exchange between waves in dynamic artificial crystals. Imposing temporary spatial periodicity couples waves, causing energy oscillations controlled by band gap width and frequency differences.
Area of Science:
- Condensed Matter Physics
- Wave Phenomena
- Materials Science
Background:
- Artificial crystals offer tunable properties for wave manipulation.
- Dynamic control over wave propagation is crucial for advanced applications.
Purpose of the Study:
- To introduce a general mechanism for controllable energy exchange between waves.
- To demonstrate this mechanism using spin waves in a dynamic magnonic crystal.
Main Methods:
- Temporarily imposing spatial periodicity on a wave-carrying medium.
- Analyzing wave coupling and energy oscillation dynamics.
- Experimental demonstration using spin waves in a magnonic crystal.
Main Results:
- A general mechanism for controllable wave energy exchange was described.
- Coupling between a primary wave and a secondary counterpropagating wave was achieved.
- Energy oscillation frequency was found to depend on band gap width and frequency difference.
Conclusions:
- Dynamic artificial crystals enable controlled energy transfer between waves.
- This effect provides a new method for manipulating wave energy.
- The findings have implications for wave-based technologies and quantum information processing.
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