No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Negative refraction imaging of acoustic metamaterial lens in the supersonic range
2. L. S. Chen, C. H. Kuo, and Z. Ye, “Acoustic imaging and collimating by slabs of sonic crystals made from arrays of rigid cylinders in air,” Applied physics letters 85(6), 1072–4 (2004).
3. J. Li, Z. Liu, and C. Qiu, “Negative refraction imaging of acoustic waves by a two-dimensional three-component phononic crystal,” Physical Review B 73(5), 054302 (2006).
4. Shidong Qin, Fangyuan Deng, and Shaoe Liu, “The phonon crystal tablet combined imaging characteristics analysis,” Journal of vibration and shock 31(17), 140–4 (2012). (in Chinese)
5. Ke Deng, Phonon crystal and acoustic properties of metamaterials regulation and functional design (Wuhan university, Wuhan, 2010). (in Chinese)
6. Junli Gao, Two-dimensional phonon crystal negative refraction imaging mechanism and characteristics research (Central south university, 2009). (in Chinese)
7. C. Croënne, B. Morvan, J. B. Vasseur et al., “Analysis of elastic waves transmitted through a 2-D phononic crystal exhibiting negative refraction,” IEEE Transactions on Ultrasonics, Ferroelectrics, and FrequencyControl 58(1), 178–186 (2011).
8. C. Croënne, E. D. Manga, B. Morvan et al., “Negative refraction of longitudinal waves in a two-dimensional solid-solid phononic crystal,” Physical Review B 83(5), 054301 (2011).
10. Zhu Xue Feng, Liang Bin, and Cheng Jianchun, “Acoustic metamaterials and acoustic invisibility cloak,” Journal of modern physics 24(2), 40–6 (2012). (in Chinese)
11. Wen xisen, Wen jihong, and Yu Dianelong, phononic crystal (National Defence Industry Press, 2009).
Article metrics loading...
Acoustic metamaterials with negative refraction index is the most promising method to overcome the diffraction limit of acoustic imaging to achieve ultrahigh resolution. In this paper, we use localized resonant phononic crystal as the unit cell to construct the acoustic negative refraction lens. Based on the vibration model of the phononic crystal, negative quality parameters of the lens are obtained while excited near the system resonance frequency. Simulation results show that negative refraction of the acoustic lens can be achieved when a sound wave transmiting through the phononic crystal plate. The patterns of the imaging field agree well with that of the incident wave, while the dispersion is very weak. The unit cell size in the simulation is 0.0005 m and the wavelength of the sound source is 0.02 m, from which we show that acoustic signal can be manipulated through structures with dimensions much smaller than the wavelength of incident wave.
Full text loading...
Most read this month