Minisymposium

Electromagnetism in Africa


  1. Organizer
  2. Abstract
  3. Papers

Organizer :

Fad Seydou
University of Oulu, Finland

Abstract

This conference aims at considering computational electromagnetics by mathematical simulation and modeling of electromagnetic problems (propagation, diffraction, radiation, etc) in a large frequency spectrum.

In particular, we emphasize on photonic crystals, biomedical imaging, and health related problems with cellular phones.

  1. Photonic Cystals (PC): Among the key innovations that contributed to the information technology revolution was the development of materials science technologies that enabled faster switching, and ever-smaller features on integrated circuits, and which made Gordon Moore's observation into a "law." As the limits of the physical principles around which the copper-silicon based electronics innovations are founded are reached, efforts to maintain this law must rely on new types of physics. Photon based information-processing approaches are a logical new basis for faster speeds, and there is an inexorable transition in information-processing and communication in this direction. Information is processed and transported using photons instead of electrons.
    By changing the size of a hollow ball or the chemical microstructure of the photonic crystal, they introduce irregularities. These "defects" act like efficient guides routing light through desired paths. The guided light travels like electrons in a chip, but much faster. By designing specific defects into the crystal, one can build sophisticated optical elements, such as light switches, filters or even mini-lasers. These systems are essential components for broadband networking over optical fibers.

    In this session we consider the different mathematical methods to study the PC properties since their introduction by Yablonovitch and John in 1987.
  2. Biomedical Imaging (BI): In BI the problem is to obtain information about an object (tumor, cells) and/or their properties from scattered wave fields measured outside the object. The object, from which information is desired, is usually inaccessible (visually obscured) or its material properties are unknown such that the application of electromagnetic wave fields is one of the few possible means for exploration.

    In this session we will be interested in breast cancer and brain tumor detection
  3. Cullar phone and health risk: Nowadays special attention is paid to the absorption of electromagnetic energy by the human head In particular, the use of hand-held tranceivers operating in close proximity to the human head has raised public concern about potential health effects.

    In this mini-symposium we develop the risk related to cellular phones, discuss the simulation techniques, and the solutions to remedy the risks.

Presentations