Using Microfluidic Channels to Determine ZThe Quantitative Permittivity of Nanoliter Fluid Volumes from 50 MHz TO 40 GHz USING MICROFLUIDIC CHANNELS TO DETERMINE THE QUANTITATIVE PERMITTIVITY OF NANOLITER FLUID VOLUMES FROM 50 MHZ TO 40 GHZ

Published

July 30, 2010

Author(s)

James C. Booth, Nathan D. Orloff, Xiaoli Lu, Yu Y. Wang, Eduard Rocas, Jordi Mateu, Juan C. Collado Gomez, Michael D. Janezic

Abstract

We describe the development of coplanar waveguide measurement structures integrated with microfluidic channels in order to rapidly determine the broadband dielectric properties of nanoliter volumes of fluids, fluid mixtures, and colloids over the range of frequencies from 50 MHz to 40 GHz. We employ of a number of different integrated microfluidic-microelectronic structures in order to quantitatively determine the complex permittivity function over this wide range of frequencies. We develop a network model based on transmission lines that uses experimentally-derived parameters to de-embed the response of the fluid-loaded devices, and apply finite-element models to determine the fluid complex permittivity.

Proceedings Title

CPEM 2010: Conference on Precision Electromagnetics Measurement 2010

Conference Dates

June 14-18, 2010

Conference Location

Daejon

Pub Type

Conferences

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Keywords

fluid permittivity, microwave, coplanar transmission line

Citation

Booth, J. , Orloff, N. , Lu, X. , Wang, Y. , Rocas, E. , Mateu, J. , Collado, J. and Janezic, M. (2010), Using Microfluidic Channels to Determine ZThe Quantitative Permittivity of Nanoliter Fluid Volumes from 50 MHz TO 40 GHz USING MICROFLUIDIC CHANNELS TO DETERMINE THE QUANTITATIVE PERMITTIVITY OF NANOLITER FLUID VOLUMES FROM 50 MHZ TO 40 GHZ, CPEM 2010: Conference on Precision Electromagnetics Measurement 2010, Daejon, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904942 (Accessed October 14, 2025)