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Verification of quartz crystal microbalance array using vector network analyzer and openQCM

Zainuddin, Ahmad Anwar and Nordin, Anis Nurashikin and Ab Rahim, Rosminazuin and Md Ralib @ Md Raghib, Aliza 'Aini and Khan, Sheroz and Guines, Cyril and Chatras, Matthieu and Pothier, Arnaud (2018) Verification of quartz crystal microbalance array using vector network analyzer and openQCM. Indonesian Journal of Electrical Engineering and Computer Science, 10 (1). pp. 84-93. ISSN 2502-4752

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Abstract

Quartz Crystal Microbalance (QCM) is a device that allows non-destructive measurements of r in situ reaction activities. In this article, an array comprising of six 3MHz QCM sensors in an array were characterized using a vector network analyzer and OpenQCM, a portable measuring instrument that measures change in resonance frequency. Measurements of S21 transmission characteristics using the vector network analyzer provides the resonance frequency and can also be used to derive the RLC equivalent electrical circuit values of a resonant two-port network based on the Butterworth-Van Dyke model. In this work, Rm, Lm, Cm and Co were obtained via curve-fitting of the measurement results to the simulated results. Measurements were done in triplicates to verify reproducibility for all 6 sensors. For comparison, measurements were also done using a portable, open-source instrument, OpenQCM. The OpenQCM instrument directly measures changes in resonance frequencies, making it ideal for biosensing experiments, which correlate changes in mass with changes in resonance frequencies. Comparison between resonance frequency measurements using VNA and OpenQCM exhibit low percentage difference 0.2%. This QCM sensor array has the potential of conducting real-time, point-of-care analyses for detection of biological molecules.

Item Type: Article (Journal)
Additional Information: 3239/63998
Uncontrolled Keywords: Quartz Crystal Microbalance; Point-of-Care; Q-Factor Sensor Array; OpenQCM; Equivalent Circuit
Subjects: Q Science > QD Chemistry
T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001 Production of electric energy. Powerplants
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User: Dr. Anis Nurashikin Nordin
Date Deposited: 31 May 2018 13:08
Last Modified: 31 May 2018 13:08
URI: http://irep.iium.edu.my/id/eprint/63998

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