https://doi.org/10.1051/epjap:2004208
Microwave conductivity measurements of high conductive polyaniline films
1
Laboratoire de Physique des Interactions Ondes-Matières, UMR CNRS
5501, ENSCPB, 16 avenue Pey Berland, 33607 Pessac, France
2
Département de Physique, Faculté des Sciences de Tunis, 2092
Tunis El Manar, Tunisia
3
PANIPLAST, Parc scientifique UNITEC 2, 351 cours de la libération,
33405 Talence, France
Corresponding author: jl.miane@enscpb.fr
Received:
24
September
2003
Revised:
22
June
2004
Accepted:
28
June
2004
Published online:
21
December
2004
This paper presents several techniques for determining the complex
conductivity of highly electrically conducting polymer films at microwave
frequencies. The advantages and disadvantages of these techniques are
discussed. Microwave measurements were investigated using resonant cavity,
reflection/transmission and impedance surface techniques. The dc
conductivity was measured using the four wires technique.
Polyaniline (Pani/DEHEPSA) films of 120 
m thickness, have
conductivity of (5000-6000 S/m) and permittivity of 
over X
and S bands. The high values of the measured conductivity and its weak
dependence on frequency at least up to 12 GHz, confirm the metallic
character of Pani-films and their efficient use in micro-electronic
technology such as microwave integrated circuits (MMIC) and microwave
devices.
PACS: 72.80.Le – Polymers; organic compounds (including organic semiconductors) / 77.22.Ch – Permittivity (dielectric function) / 78.70.Gq – Microwave and radio-frequency interactions / 82.35.Lr – Physical properties of polymers
© EDP Sciences, 2005
