Acoustic focusing by an array of heat sources in air
Publication
, Journal Article
Ge, Y; Sun, HX; Liu, C; Qian, J; Yuan, SQ; Xia, JP; Guan, YJ; Zhang, SY
Published in: Applied Physics Express
June 1, 2016
We report on a broadband acoustic focusing lens comprising 20 heat sources of different temperatures, 10 on each side of the array, in air. This focusing phenomenon is attributed to temperature gradients inducing the desired refractive index in one medium (air) and to the continuously changing acoustic impedance, which avoids any acoustic impedance difference that would occur between a lens and air. The results indicate that this focusing lens has a broader bandwidth (>3.5 kHz), higher intensity amplification (about 5.0 times), and a simpler structure. This focusing lens has great potential for applications in ultrasonic devices.
Duke Scholars
Published In
Applied Physics Express
DOI
EISSN
1882-0786
ISSN
1882-0778
Publication Date
June 1, 2016
Volume
9
Issue
6
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 02 Physical Sciences
Citation
APA
Chicago
ICMJE
MLA
NLM
Ge, Y., Sun, H. X., Liu, C., Qian, J., Yuan, S. Q., Xia, J. P., … Zhang, S. Y. (2016). Acoustic focusing by an array of heat sources in air. Applied Physics Express, 9(6). https://doi.org/10.7567/APEX.9.066701
Ge, Y., H. X. Sun, C. Liu, J. Qian, S. Q. Yuan, J. P. Xia, Y. J. Guan, and S. Y. Zhang. “Acoustic focusing by an array of heat sources in air.” Applied Physics Express 9, no. 6 (June 1, 2016). https://doi.org/10.7567/APEX.9.066701.
Ge Y, Sun HX, Liu C, Qian J, Yuan SQ, Xia JP, et al. Acoustic focusing by an array of heat sources in air. Applied Physics Express. 2016 Jun 1;9(6).
Ge, Y., et al. “Acoustic focusing by an array of heat sources in air.” Applied Physics Express, vol. 9, no. 6, June 2016. Scopus, doi:10.7567/APEX.9.066701.
Ge Y, Sun HX, Liu C, Qian J, Yuan SQ, Xia JP, Guan YJ, Zhang SY. Acoustic focusing by an array of heat sources in air. Applied Physics Express. 2016 Jun 1;9(6).
Published In
Applied Physics Express
DOI
EISSN
1882-0786
ISSN
1882-0778
Publication Date
June 1, 2016
Volume
9
Issue
6
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 02 Physical Sciences