Sub-THz Non-Contact Probing System for On-Chip Microfluidic Applications

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F25%3A00648153" target="_blank" >RIV/67985882:_____/25:00648153 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10513044
Result on the web
<a href="https://doi.org/10.1109/ACCESS.2025.3607092" target="_blank" >https://doi.org/10.1109/ACCESS.2025.3607092</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/ACCESS.2025.3607092" target="_blank" >10.1109/ACCESS.2025.3607092</a>

Result language
angličtina
Original language name
Sub-THz Non-Contact Probing System for On-Chip Microfluidic Applications
Original language description
We present a novel sub-THz probe station enabling contact-free characterization of liquids within integrated microfluidic channels on quartz substrates. The chip substrate and the 3D-printed flow-cell are optically transparent, enabling microscopic visual alignment and compatibility with the optical inspection system. In the F-band (90-140 GHz), we demonstrate measurements of a coplanar waveguide combined with the microfluidic system, using ethanol and bovine serum albumin protein concentration gradients. The data are stable and repeatable: Traces for different concentrations remain clearly separated, and their standard-deviation envelopes do not overlap where the reflection coefficient $S_{11}$ and the transmission coefficient $S_{21}$ 's mean standard deviation across all measurements for EtOH remains between 3.46-0.21 %, and BSA 3.89-0.18 %. This demonstrates the method's high reliability, particularly for the transmission coefficient $S_{21}$ . Designed for flexibility and rapid prototyping, and the platform supports operation up to 1 THz and provides a versatile tool for high-frequency dielectric spectroscopy in fluidic environments and system-level lab-on-chip applications
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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