Department of Electronic Engineering IEEE AP/MTT HK

Department of Electronic Engineering IEEE AP/MTT HK

Joint Chapter Joint Chapter

Seminar on

Abstract

During this lecture we will review some modeling theories of the composite materials made of mixture materials. We will show the failure of the general mixture theories and explain the general effective medium equation (GEM). This is almost certainly because the GEM equation is the only equation that can model the rapid changes in the dielectric constants and conductivity that occur at and near the percolation threshold of the conducting particles in the dielectric matrix. Two parameters of the GEM equation, vc or c(the percolation threshold) and t (an exponent) give some insight into the microstructures and the connectivity of the dispersed conducting particles.

Five different classes of composite materials, including carbon-resin mixtures (with various types of carbon ) and a conducting polymer ( in both air and water ) have been analyzed. The GEM equation gives the best quantitative fits of the experimental data for these composite materials and for many others complex dielectric mixture using conducting particles..

In a second part, the lecture will present some of the electromagnetic measurement techniques used to characterize composite materials and to deduce the complex permittivity or permeability of these materials. Some applications of such materials will be given.

Biography

PRIOU, Alain C. ( M. 1990-1995, IEMA, IEEE MTT Senior Member) was born in Palinges , France ( May 5, 1944), married and has three children, Eric, Jean-Marc, and Cécile. Dr. Priou attended Paul Sabatier University of Sciences in Toulouse, France (B.S, M.S. 1969, Ph.D. 1981, Habilitation 1987).

Dr. Priou joined the University of Paris X as Professor of Electromagnetics at the Ville d'Avray Institute of Technology in France (1994-) where he is also the Director of the Electromagnetic Applied Group. In 1998, He became the Director of the Institute of Technology and the Director of the Engineering Department of the University of Paris X. From September 1999 to now, he is Vice-President for the development in charge of new types of education, training and new research projects. Last September 2004, he was promoted as Associate Professor at the University of Zhejiang at the Electromagnetic Academy of Hangzhou, China.

He was the Chairman of the Exploratory Team on Smart Structures and Mems of the NATO Panel 3 on Physics and Electronics (1994-1998). He was the General Chairman of PIERS 1998, Nantes, France, July13-17, 1998. He is the Guest-Editor of three books on composite materials and measurement techniques (PIER 6, PIER9 and PIER 41). He is expert and evaluator of European Community Programs( INTAS and Leonardo). He has authored and co-authored more than 120 papers in international journals and Reviews.

Date: 11 March 2005 (Friday)

Time: 2:30 - 4:00 pm

Venue: G6302, 6/Floor, Green Zone, AcademicBuilding

CityUniversity of Hong Kong

** ALL Are Welcome **

Enquiry: Dr K W Leung, Department of Electronic Engineering, CityU
Tel: 2788 9382 Fax: 2788 7791 Email: