About this paper

Appears in:
Pages: 2745-2751
Publication year: 2010
ISBN: 978-84-613-9386-2
ISSN: 2340-1117

Conference name: 2nd International Conference on Education and New Learning Technologies
Dates: 5-7 July, 2010
Location: Barcelona, Spain

TEACHING THE PROPAGATION OF ELECTROMAGNETIC WAVES IN CHIRAL MEDIA BY USING TIME-DOMAIN SIMULATORS

A. Grande, O. Gonzalez, J. A. Pereda, A. Vegas

University of Cantabria (SPAIN)
The behavior of electromagnetic waves in a chiral medium is characterized by the appearance of the optical activity. The optical activity is the ability to rotate the polarization plane of a wave as it propagates in a medium. This phenomenon was first observed by Arago in 1811 while working with quartz crystals. In 1848, Pasteur demonstrated the relationship between the optical activity of some compounds and the existence of a specific kind of symmetry in its molecular structure. This symmetry was called chiral, that comes etymologically from the Latin word for hand, since it is the type of symmetry or our hands.

Since, molecular dissymmetry produces rotation of the polarization plane at optical frequencies, by scaling the problem, artificial chiral media for microwave frequencies were synthesized including small particles with chiral symmetry into a resin matrix. Nowadays, artificial chiral media have attracted considerable attention due to their new potential applications in millimeter-wave and microwave engineering becoming a relevant topic in science and technology.

In general, students have difficulty in perceiving the behavior of electromagnetic waves. The situation is worsened when chiral media are involved, since they exhibit complex electromagnetic phenomena such as optical activity, circular dichroism…
The aim of this work is to provide aid in the teaching of the typical physical phenomena occurring in chiral media by offering the students a mental image of the electromagnetic phenomena. To this end, we have used an extension of the Finite-Difference Time-Domain technique for modeling the wave propagation of the electromagnetic waves in chiral media to carry out a series of virtual experiments. These experiments have been carefully chosen to illustrate the characteristic behavior of electromagnetic waves in chiral media. The results of the simulations have been recorded and a collection of videos has been created.

These videos are intended for advance undergraduate and graduate students and provide a useful teaching/learning tool. We consider that by means of its visualization students will acquire a better conceptual understanding of the wave propagation of the electromagnetic waves in chiral material.
@InProceedings{GRANDE2010TEA,
author = {Grande, A. and Gonzalez, O. and Pereda, J. A. and Vegas, A.},
title = {TEACHING THE PROPAGATION OF ELECTROMAGNETIC WAVES IN CHIRAL MEDIA BY USING TIME-DOMAIN SIMULATORS},
series = {2nd International Conference on Education and New Learning Technologies},
booktitle = {EDULEARN10 Proceedings},
isbn = {978-84-613-9386-2},
issn = {2340-1117},
publisher = {IATED},
location = {Barcelona, Spain},
month = {5-7 July, 2010},
year = {2010},
pages = {2745-2751}}
TY - CONF
AU - A. Grande AU - O. Gonzalez AU - J. A. Pereda AU - A. Vegas
TI - TEACHING THE PROPAGATION OF ELECTROMAGNETIC WAVES IN CHIRAL MEDIA BY USING TIME-DOMAIN SIMULATORS
SN - 978-84-613-9386-2/2340-1117
PY - 2010
Y1 - 5-7 July, 2010
CI - Barcelona, Spain
JO - 2nd International Conference on Education and New Learning Technologies
JA - EDULEARN10 Proceedings
SP - 2745
EP - 2751
ER -
A. Grande, O. Gonzalez, J. A. Pereda, A. Vegas (2010) TEACHING THE PROPAGATION OF ELECTROMAGNETIC WAVES IN CHIRAL MEDIA BY USING TIME-DOMAIN SIMULATORS, EDULEARN10 Proceedings, pp. 2745-2751.
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