Liquid lens with adjustable focus for ultrasonic imaging
作者： Zhaoxi Li , Rong Guo , Chunlong Fei , Di Li , Dongdong Chen
DOI: 10.1016/J.APACOUST.2020.107787
关键词: Lens (optics) 、 Focal length 、 Focus (optics) 、 Transducer 、 Optics 、 Acoustic impedance 、 Refractive index 、 Materials science 、 Curvature 、 Speed of sound
摘要: Abstract An acoustic lens is an attractive device due to its superior ability image and focus beams. Nevertheless, the limitation of such a solid-phase apparent in that once made, focal length remains fixed. On contrary, liquid can not only flexibly tune position focus, but also avoid greater impedance. This paper presented convex with tunable focus. The distance derived from formula optical group. interface curvature dependent as function infused volume were studied theoretically experimentally. Furthermore, refraction index be accurately selected needed by adjusting concentrations liquid. results modification length. magnification this combination single element 6.8 MHz transducer was evaluated imaging steel probes which embedded at different without performing mechanical axial scanning. error caused difference sound speed between host medium corrected.
sci-hub.st 参考文章(37)
P. G. Griffin, O. J. Ginther, Research applications of ultrasonic imaging in reproductive biology. Journal of Animal Science. ,vol. 70, pp. 953- 972 ,(1992) , 10.2527/1992.703953X
Li-Li Yu, Wen-De Shou, Chun Hui, Modeling of Focused Acoustic Field of a Concave Multi-annular Phased Array Using Spheroidal Beam Equation Communications in Theoretical Physics. ,vol. 57, pp. 285- 289 ,(2012) , 10.1088/0253-6102/57/2/20
B. Kamgar-Parsi, B. Johnson, D. L. Folds, E. O. Belcher, High‐resolution underwater acoustic imaging with lens‐based systems International Journal of Imaging Systems and Technology. ,vol. 8, pp. 377- 385 ,(1997) , 10.1002/(SICI)1098-1098(1997)8:4<377::AID-IMA4>3.0.CO;2-7
Chaolong Song, Lei Xi, Huabei Jiang, Acoustic lens with variable focal length for photoacoustic microscopy Journal of Applied Physics. ,vol. 114, pp. 194703- ,(2013) , 10.1063/1.4832757
B.P. Zhu, D.W. Wu, Y. Zhang, J. Ou-Yang, S. Chen, X.F. Yang, Sol–gel derived PMN–PT thick films for high frequency ultrasound linear array applications Ceramics International. ,vol. 39, pp. 8709- 8714 ,(2013) , 10.1016/J.CERAMINT.2013.04.054
Daisuke Koyama, Ryoichi Isago, Kentaro Nakamura, Three-dimensional variable-focus liquid lens using acoustic radiation force IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control. ,vol. 58, pp. 2720- 2726 ,(2011) , 10.1109/TUFFC.2011.2134
Yong Li, Bin Liang, Xu Tao, Xue-feng Zhu, Xin-ye Zou, Jian-chun Cheng, Acoustic focusing by coiling up space Applied Physics Letters. ,vol. 101, pp. 233508- ,(2012) , 10.1063/1.4769984
Hanchao Zhang, Zhilie Tang, Yongheng He, Lina Guo, Two dimensional photoacoustic imaging based on an acoustic lens and the peak-hold technology. Review of Scientific Instruments. ,vol. 78, pp. 064902- ,(2007) , 10.1063/1.2747097
Qiang Zhang, Faqi Li, Ruo Feng, Jianyi Xu, Jin Bai, Zhibiao Wang, Yaojun Wang, None, Numerical simulation of the transient temperature field from an annular focused ultrasonic transducer. Ultrasound in Medicine and Biology. ,vol. 29, pp. 585- 589 ,(2003) , 10.1016/S0301-5629(02)00734-2
Bjoern Gerold, Spiros Kotopoulis, Craig McDougall, David McGloin, Michiel Postema, Paul Prentice, Laser-nucleated acoustic cavitation in focused ultrasound Review of Scientific Instruments. ,vol. 82, pp. 044902- 044902 ,(2011) , 10.1063/1.3579499