Title :
On-chip terahertz spectroscopy of liquid mixtures
Author :
M. Swithenbank;C. Russell;A. D. Burnett;L. H. Li;H. Linfield;G. Davies;E. Cunningham;C. D. Wood
Author_Institution :
School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, UK
Abstract :
We demonstrate `through-substrate´ sensing of fluids for application in the terahertz spectroscopy of biological materials. This technique employs planar Goubau lines with integrated photoconductive material, formed on a flexible, thin polyimide substrate, and bonded to a microfluidic channel. Few-picosecond pulses are used to probe liquid samples confined within the channel, over a total interaction length of 4mm, overcoming water-absorption limitations of free-space terahertz transmission measurements.
Keywords :
"Transmission line measurements","Substrates","Table lookup","Permittivity","Permittivity measurement","Time-domain analysis","Spectroscopy"
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
Electronic_ISBN :
2162-2035
DOI :
10.1109/IRMMW-THz.2015.7327560
