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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10513044

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Access

ISSN

2169-3536

e-ISSN

2169-3536

Svazek periodika

13

Číslo periodika v rámci svazku

18 Sept

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

160125-160135

Kód UT WoS článku

001575807500019

EID výsledku v databázi Scopus

2-s2.0-105015533655