On-Chip Characterization of High-Loss Liquids Between 750 and 1100 GHz
Artikel i vetenskaplig tidskrift, 2021

Terahertz spectroscopy is a promising tool for analyzing the picosecond dynamics of biomolecules, which is influenced by surrounding water molecules. However, water causes extreme losses to terahertz signals, preventing sensitive measurements at this frequency range. Here, we present sensitive on-chip terahertz spectroscopy of highly lossy aqueous solutions using a vector network analyzer, contact probes, and a coplanar waveguide with a 0.1 mm wide microfluidic channel. The complex permittivities of various deionized water/isopropyl alcohol concentration are extracted from a known reference measurement across the frequency range 750–1100 GHz and agrees well with literature data. The results prove the presented method as a highsensitive approach for on-chip terahertz spectroscopy of high-loss liquids, capable of resolving the permittivity of water.

vector network analyzers

scattering parameters

Coplanar waveguides

water

on-wafer measurements

permittivity

material properties

microfluidic channels

isopropyl alcohol

terahertz spectroscopy

Författare

Juan Cabello Sánchez

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Vladimir Drakinskiy

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Jan Stake

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Helena Rodilla

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

IEEE Transactions on Terahertz Science and Technology

2156-342X (ISSN)

Vol. 11 1 113-116

Analys av biologiska processer med hjälp av Terahertz teknologi

Vetenskapsrådet (VR), 2016-01-01 -- 2019-12-31.

Styrkeområden

Informations- och kommunikationsteknik

Infrastruktur

Kollberglaboratoriet

Nanotekniklaboratoriet

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/TTHZ.2020.3029503

Mer information

Senast uppdaterat

2021-03-17