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Overcoming the Diffraction Limit in Wave Physics Using a Time-Reversal Mirror and a Novel Acoustic Sink
Abstract
In recent years, time-reversal (TR) mirrors have been developed that create TR waves for ultrasonic transient fields propagating through complex media. A TR wave back propagates and refocuses exactly at its initial source. However, because of diffraction, even if the source is pointlike the wave refocuses on a spot size that cannot be smaller than half a wavelength. Here, by using a TR interpretation of this limit, we show that this latter limitation can be overcome if the source is replaced by its TR image. This new device acts as an acoustic sink that absorbs the TR wave. Here we report the first experimental result obtained with an acoustic sink where a focal spot size of less than 1/14th of one wavelength is recorded.
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Citations
Cited by
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Li, J., Fok, L., Yin, X., Bartal, G., & Zhang, X. (2009) · Nature Materials · doi:10.1038/nmat2561 · Cited by 731
Time Reversal of Electromagnetic Waves
Lerosey, G., de Rosny, J., Tourin, A., Derode, A., Montaldo, G., & Fink, M. (2004) · Physical Review Letters · doi:10.1103/physrevlett.92.193904 · Cited by 686
Self-citationA holey-structured metamaterial for acoustic deep-subwavelength imaging
Zhu, J., Christensen, J., Jung, J., Martin-Moreno, L., Yin, X., Fok, L., Zhang, X., & Garcia-Vidal, F. J. (2011) · Nature Physics · doi:10.1038/nphys1804 · Cited by 668
Brain palpation from physiological vibrations using MRI
Zorgani, A., Souchon, R., Dinh, A.-H., Chapelon, J.-Y., Ménager, J.-M., Lounis, S., Rouvière, O., & Catheline, S. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1509895112 · Cited by 69
Wave Communication across Regular Lattices
Hein, B., & Tanner, G. (2009) · Physical Review Letters · doi:10.1103/physrevlett.103.260501 · Cited by 37
Metadata
- Authors
- de Rosny, J., & Fink, M.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2002-08-30
- Volume
- 89
- Issue
- 12
- Pages
- 124301-124301
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2057100686
- Cited by
- 282
- References
- 0
- FWCI
- 12.29
- Type
- journal article
- Language
- en
- Open access
- closed
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- de Rosny, J., & Fink, M. (2002). Overcoming the Diffraction Limit in Wave Physics Using a Time-Reversal Mirror and a Novel Acoustic Sink. Physical Review Letters. https://doi.org/10.1103/physrevlett.89.124301
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