Directory Record for:

Wenwu Cao

Title(s):

Professor of Mathematics

Department:

Mathematics

College/Admin. Unit:

Eberly College of Science

Office Address:

164 Materials Research Laboratory Building

University Park, PA 16802

Office Phone:

(814) 865-4101

Office Fax:

(814) 865-2326

E-Mail Address:

Validate to view address - Send Email via form

http://www.math.psu.edu/cao

Research Synopsis:

Ferroelectric materials and their applications. Characterization of dielectric, elastic and piezoelectric properties of materials. Design of high frequency medical ultrasonic imaging transducers, NDE broadband transducers, ultrasonic bonding transducers and other piezoelectric devices using finite element simulations. Design of dielectric filters/resonators for microwave and millimeter wave devices using FDTD method.

Technologies Impacted by Research:

Ferroelectric materials have superior piezoelectric, pyroelectric and dielectric properties. They are being used to make ultrasonic transducers, infrared imaging devices and ceramic capacitors. Advanced mathematical tools plus powerful computation schemes make it possible to simulate real life problems, which can provide direct visualization, help better understand the fundamental principles and leads to better designs of ultrasonic transducers and dielectric devices.

Selected Publications:

E. Semouchkina, W. Cao, R. Mittra and W. H. Yu, "Analysis of Resonance Processes in Microstrip Ring Resonators by the FDTD Method", Microwave and Optical Technology Lett. 28/5, pp. 312-321(2001).
H.F. Wang and W. Cao, "Improved Ultrasonic Spectroscopy Methods for Characterization of Dispersive Materials", IEEE Trans. Ultra. Ferro. and Frequency Control, vol. 48 (4) pp 1060-1065, (2001).
Rui Zhang, Bei Jiang and Wenwu Cao, "Elastic, piezoelectric and dielectric properties of multi-domain 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 single crystal", J. Appl. Phys., vol. 90, pp3471-3475 (2001).