The adjustable character of microwave transmittance in ER fluid

Xiao Peng Zhao, Ji Jun Fan, Xiu Min Gao, Chang Nian Cao

Research output: Contribution to journalArticlepeer-review

Abstract

According to the experimental facts that the structure and the dielectric property of electro-rheology (ER) fluid change under the external electric field, a model of microwave transmittance in ER fluid was established, and the formula of transmittance was given also. Theoretical simulation shows that the transmittance of microwave increases with increasing electric field, if the dielectric constant of ER fluid is greater than that of its container. On the contrary, it decreases with the electric field. Our experiment results revealed that the microwave attenuation in ER fluid could be adjusted by changing the external electric field. We think the change of the structure and dielectric property of ER fluid are the main cause of the fact that the transmittance could be adjusted under the external electric field.

Original languageEnglish
Pages (from-to)1307
Number of pages1
JournalWuli Xuebao/Acta Physica Sinica
Volume50
Issue number7
StatePublished - Jul 2001

Keywords

  • Dielectric property
  • Er fluid
  • Microwave transmittance

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