IAS Benjamin Meaker Visiting Professor: Christian Brosseau, Université de Bretagne Occidentale, Brest, France

14 - 28 February 2011

Photo of Professor Christian BrosseauProfessor Christian Brosseau received a Ph.D. degree in physics from Fourier University, Grenoble, France in 1989. After holding a postdoctoral fellow position at Harvard University, he returned to Fourier University to become a Research Associate.

He became an associate professor, and professor at the University of Brest, France, in 1994 and 1997, respectively. He led the wave-matter interaction modeling and simulation group in the physics department and supervises PhD students and postdoctoral research associates.

He has published over 140 refereed journal articles on a wide variety of theoretical and experimental topics and presented over 90 papers at conferences. He has also written the book Fundamentals of Polarized Light: A Statistical Approach, Wiley, published in 1998, was the Editor of the book Prospects in Filled Polymers Engineering: Mesostructure, Elasticity Network, and Macroscopic Properties, (Research SignPost, Trivandrum, 2008), and co-authored the book Dielectric Properties of Heterostructures: A Computational Electromagnetics Approach, to be published.

His current research interests include polarization and coherence of optical fields, nanophysics, biological physics, computational materials physics, and electromagnetic wave propagation in complex media.

He is a Fellow of the Institute of Physics, the Optical Society of America, and the Electromagnetics Academy. He has many editorial positions: Editorial Board Member of Optics Communications 2005-2008, of Optics Letters 2005-present, of Nanotechnology 2005-present, of American Journal of Physics 2008-present, of the Journal of Nanomaterials 2007-present, and of Progress in Optics 2008-present.

Professor Brosseau will present the following lectures as part of his Benjamin Meaker Visiting Professorship:

1) Controlled extrinsic RT magnetoelectric effect in granular nanocomposites for engineering novel microwave devices

2pm, Tue 22 Feb 2011, ACCIS-2, Queen’s Building

After a brief overview of our current research projects in the area of electromagnetic properties of heterostructures, we present a comprehensive study of the magnetic and microwave properties of piezoelectric BaTiO3/magnetostrictive Ni nanocomposites (NCs), fabricated under uniaxial compression, at room temperature.

We provide the experimental evidence for a ME effect, i.e. the effective permittivity at microwave frequencies can be controlled by an external magnetic field, which makes these nanostructures ready for microwave tunable devices, and sensors. The present results highlight the strong influence of interfaces of the composite constituent play a crucial role in the analysis of the ME coupling.

2) Magneto-mechanical coupling and ageing of magnetic polymers for magnetoactive smart composite materials

12noon, Thu 24 Feb 2011, ACCIS-2, Queen's Building

The impetus of this work was to investigate the electromagnetic and tensile properties of several commercially available plastoferrites (PFs) at ambient conditions. The approach involved selection of a set of PFs and measuring their complex effective permittivity and permeability under uniaxial stress at microwave frequencies, room temperature, and for tensilely strained PFs up to 3%. The present results have important applications in magnetoactive smart composite materials.

For more information on Professor Brosseau's visit, please contact Dr Hua-Xin Peng.