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High electric field effects on gigahertz dielectric properties of water measured with microwave microfluidic devices

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2 Author(s)
Song, Chunrong ; Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina 29634, USA ; Pingshan Wang

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3405975 

Silicon microstrip line devices with 260 nm planar microfluidic channels are fabricated and used to investigate water dielectric saturation effects. Microwave scattering parameter measurements are conducted from 1 to 16 GHz under different uniform dc electric fields. When the applied dc field is increased to ∼1 MV/cm, the measured transmission coefficient S21 is increased up to 18 dB, which indicates a large change in water dielectric properties. Extracted water permittivity (ε=ε+jε) shows that ε and ε are changed up to 70% and 50%, respectively.

Published in:

Review of Scientific Instruments  (Volume:81 ,  Issue: 5 )

Date of Publication:

May 2010

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