TY - JOUR
T1 - Acoustic properties of alumina colloidal/polymer nano-composite film on silicon
AU - Zhang, Rui
AU - Cao, Wenwu
AU - Zhou, Qifa
AU - Cha, Jung Hyui
AU - Shung, K. Kirk
AU - Huang, Yuhong
N1 - Funding Information:
Manuscript received March 3, 2006; accepted July 15, 2006. This research was sponsored by the NIH Grant for the Ultrasonic Transducer Engineering Resource (Grant No. P41-EB2182-07). R. Zhang is with the Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang, China. W. Cao is with the Materials Research Institute, The Pennsylvania State University, University Park, PA 16802 (e-mail: [email protected]). Q. Zhou, J. H. Cha, and K. K. Shung are with the Department of Biomedical Engineering and NIH Transducer Resource Center, University of Southern California, Los Angeles, CA 90089. Y. Huang is with Chemat Technology, Inc., Northridge, CA 91324. Digital Object Identifier 10.1109/TUFFC.2007.270
PY - 2007/3
Y1 - 2007/3
N2 - Alumina colloidal/polymer composite films on silicon substrates have been successfully fabricated using the sol-gel method, in which the crystallite sizes of alumina are between 20 and 50 nm. The density and ultrasonic phase velocities in these films with different alumina ratios from 14% to 32% were measured at the desired operating frequency. We have proved that the density, acoustic phase velocities, and hence the acoustic impedance of the nanocomposite films increase with the alumina content, which gives us another option of tailoring the acoustic impedance of the nano-composite film for making the matching layer of high-frequency medical ultrasonic transducers.
AB - Alumina colloidal/polymer composite films on silicon substrates have been successfully fabricated using the sol-gel method, in which the crystallite sizes of alumina are between 20 and 50 nm. The density and ultrasonic phase velocities in these films with different alumina ratios from 14% to 32% were measured at the desired operating frequency. We have proved that the density, acoustic phase velocities, and hence the acoustic impedance of the nanocomposite films increase with the alumina content, which gives us another option of tailoring the acoustic impedance of the nano-composite film for making the matching layer of high-frequency medical ultrasonic transducers.
UR - https://www.scopus.com/pages/publications/33947629184
UR - https://www.scopus.com/pages/publications/33947629184#tab=citedBy
U2 - 10.1109/TUFFC.2007.270
DO - 10.1109/TUFFC.2007.270
M3 - Article
C2 - 17375816
AN - SCOPUS:33947629184
SN - 0885-3010
VL - 54
SP - 467
EP - 469
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 3
ER -