Thin polyaniline films in EMI shielding

Tapio Mäkelä; Seppo Pienimaa; Tapani Taka; Salme Jussila; Heikki Isotalo

doi:10.1016/S0379-6779(97)80259-7

Thin polyaniline films in EMI shielding

Tapio Mäkelä, Seppo Pienimaa, Tapani Taka, Salme Jussila, Heikki Isotalo

Research output: Contribution to journal › Article › Scientific › peer-review

183 Citations (Scopus)

Abstract

Electromagnetic interference shielding efficiency has been measured for highly electrically conducting Polyaniline-Camphor Sulfonic Acid. The polymer is spin coated from m-cresol solution on an electrically insulating substrate as a 1–30 μm thick layer having a conductivity of 10–100 S/cm. The shielding efficiencies (SE) for these electrically thin polyaniline films have been measured in the near-field with a dual-chamber box and in the far-field with a transmission line method in the frequency range 0.1–1000 MHz. The measurements show that SE depends primarily on the surface resistance both in the far-field and the near-field. An additional effect >10 dB is seen when the two layer structure is measured in the near field. By using layer structures, the SE is >40 dB up to ca. 100 MHz in the near-field and 39 dB at 1 GHz in the far-field.

Original language	English
Pages (from-to)	1335-1336
Journal	Synthetic Metals
Volume	85
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(97)80259-7
Publication status	Published - 1997
MoE publication type	A1 Journal article-refereed
Event	International Conference on Science and Technology of Synthetic Metals ICSM '96 - Snowbird, United States Duration: 28 Jul 1996 → 2 Aug 1996

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10.1016/S0379-6779(97)80259-7

183 Citations
1 Conference article in proceedings

Thin polyaniline films in EMI shielding
Mäkelä, T., Pienimaa, S., Taka, T., Jussila, S. & Isotalo, H., 1997, Proceedings of the International Conference on Science and Technology of Synthetic Metals (ICSM '96): Electronic polymers II. Vardeny, Z. V. & Epstein, A. J. (eds.). Amsterdam: Elsevier, Vol. 2. p. 1335-1336
Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Cite this

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title = "Thin polyaniline films in EMI shielding",

abstract = "Electromagnetic interference shielding efficiency has been measured for highly electrically conducting Polyaniline-Camphor Sulfonic Acid. The polymer is spin coated from m-cresol solution on an electrically insulating substrate as a 1–30 μm thick layer having a conductivity of 10–100 S/cm. The shielding efficiencies (SE) for these electrically thin polyaniline films have been measured in the near-field with a dual-chamber box and in the far-field with a transmission line method in the frequency range 0.1–1000 MHz. The measurements show that SE depends primarily on the surface resistance both in the far-field and the near-field. An additional effect >10 dB is seen when the two layer structure is measured in the near field. By using layer structures, the SE is >40 dB up to ca. 100 MHz in the near-field and 39 dB at 1 GHz in the far-field.",

author = "Tapio M{\"a}kel{\"a} and Seppo Pienimaa and Tapani Taka and Salme Jussila and Heikki Isotalo",

year = "1997",

doi = "10.1016/S0379-6779(97)80259-7",

language = "English",

volume = "85",

pages = "1335--1336",

journal = "Synthetic Metals",

issn = "0379-6779",

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number = "1-3",

note = "International Conference on Science and Technology of Synthetic Metals ICSM '96 ; Conference date: 28-07-1996 Through 02-08-1996",

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TY - JOUR

T1 - Thin polyaniline films in EMI shielding

AU - Mäkelä, Tapio

AU - Pienimaa, Seppo

AU - Taka, Tapani

AU - Jussila, Salme

AU - Isotalo, Heikki

PY - 1997

Y1 - 1997

N2 - Electromagnetic interference shielding efficiency has been measured for highly electrically conducting Polyaniline-Camphor Sulfonic Acid. The polymer is spin coated from m-cresol solution on an electrically insulating substrate as a 1–30 μm thick layer having a conductivity of 10–100 S/cm. The shielding efficiencies (SE) for these electrically thin polyaniline films have been measured in the near-field with a dual-chamber box and in the far-field with a transmission line method in the frequency range 0.1–1000 MHz. The measurements show that SE depends primarily on the surface resistance both in the far-field and the near-field. An additional effect >10 dB is seen when the two layer structure is measured in the near field. By using layer structures, the SE is >40 dB up to ca. 100 MHz in the near-field and 39 dB at 1 GHz in the far-field.

AB - Electromagnetic interference shielding efficiency has been measured for highly electrically conducting Polyaniline-Camphor Sulfonic Acid. The polymer is spin coated from m-cresol solution on an electrically insulating substrate as a 1–30 μm thick layer having a conductivity of 10–100 S/cm. The shielding efficiencies (SE) for these electrically thin polyaniline films have been measured in the near-field with a dual-chamber box and in the far-field with a transmission line method in the frequency range 0.1–1000 MHz. The measurements show that SE depends primarily on the surface resistance both in the far-field and the near-field. An additional effect >10 dB is seen when the two layer structure is measured in the near field. By using layer structures, the SE is >40 dB up to ca. 100 MHz in the near-field and 39 dB at 1 GHz in the far-field.

U2 - 10.1016/S0379-6779(97)80259-7

DO - 10.1016/S0379-6779(97)80259-7

M3 - Article

SN - 0379-6779

VL - 85

SP - 1335

EP - 1336

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

T2 - International Conference on Science and Technology of Synthetic Metals ICSM '96

Y2 - 28 July 1996 through 2 August 1996

ER -

Thin polyaniline films in EMI shielding

Abstract

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Thin polyaniline films in EMI shielding

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