Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions

This project investigated the resonance frequency response of Quartz Crystal Microbalance (QCM) with different metal electrodes in different type of liquids. The study investigates the relationship of the density and viscosity of the solutions as a function of the resonance frequency shift (ΔFw) of...

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Main Author:	Abdul Aziz, Siti Salmiwati
Format:	Thesis
Language:	English English
Published:	2008
Subjects:	Quartz crystal microbalances Saccharides
Online Access:	http://psasir.upm.edu.my/id/eprint/5097/1/FS_2008_5.pdf
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spelling	my-upm-ir.50972013-05-27T07:20:23Z Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions 2008 Abdul Aziz, Siti Salmiwati This project investigated the resonance frequency response of Quartz Crystal Microbalance (QCM) with different metal electrodes in different type of liquids. The study investigates the relationship of the density and viscosity of the solutions as a function of the resonance frequency shift (ΔFw) of the QCMs. The technique used was based on the principle of electromechanical coupling of piezoelectric Quartz Crystal Microbalance. In this study, QCMs of 10 MHz fundamental frequency with chromium, molybdenum, tungsten and gold electrodes were used to measure their ΔFw in saccharide solutions. The quartz crystal was clamped between two O-rings in a liquid flow cell. Only one side of the crystal was exposed to the solutions which flow through it propelled by a micro-tube pump. A total of six different saccharide solutions were chosen. The saccharide samples (glucose, fructose, mannose, sucrose, maltose and lactose) were prepared as solutions with different concentrations. All the measurements were carried out at room temperature, 26.5 ± 0.5 °C. The research demonstrates that the interaction of the vibrating quartz crystal with the liquid medium is expressed by a decrease in the resonance frequency, which is proportional to the product of the square root of the solution viscosity and density. The increase in the viscosity of the liquid also causes the vibrating mass to increase on the quartz crystal surface, and this make resonance frequency decreases. The aim of the study was to achieve an understanding of the information provided by measuring the shifts in the resonance frequency of the QCM with different metal electrodes (Cr, Mo, W, and Au) in saccharide solutions. Resonance frequency shift (ΔFw) of the QCM with gold electrodes was found more responsive compared to chromium, molybdenum and tungsten electrodes in saccharide solutions. The determination of parameter K, the coefficient of the equation that governs the relationship between ΔFw , viscosity and density is one of the major objectives of the project. It was found that value K changes with different saccharide solutions in the range of 0.647x104-3.234x104 cm2 g-1 s-1/2. Quartz crystal microbalances Saccharides 2008 Thesis http://psasir.upm.edu.my/id/eprint/5097/ http://psasir.upm.edu.my/id/eprint/5097/1/FS_2008_5.pdf application/pdf en public masters Universiti Putra Malaysia Quartz crystal microbalances Saccharides Science English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Quartz crystal microbalances Saccharides
spellingShingle	Quartz crystal microbalances Saccharides Abdul Aziz, Siti Salmiwati Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions
description	This project investigated the resonance frequency response of Quartz Crystal Microbalance (QCM) with different metal electrodes in different type of liquids. The study investigates the relationship of the density and viscosity of the solutions as a function of the resonance frequency shift (ΔFw) of the QCMs. The technique used was based on the principle of electromechanical coupling of piezoelectric Quartz Crystal Microbalance. In this study, QCMs of 10 MHz fundamental frequency with chromium, molybdenum, tungsten and gold electrodes were used to measure their ΔFw in saccharide solutions. The quartz crystal was clamped between two O-rings in a liquid flow cell. Only one side of the crystal was exposed to the solutions which flow through it propelled by a micro-tube pump. A total of six different saccharide solutions were chosen. The saccharide samples (glucose, fructose, mannose, sucrose, maltose and lactose) were prepared as solutions with different concentrations. All the measurements were carried out at room temperature, 26.5 ± 0.5 °C. The research demonstrates that the interaction of the vibrating quartz crystal with the liquid medium is expressed by a decrease in the resonance frequency, which is proportional to the product of the square root of the solution viscosity and density. The increase in the viscosity of the liquid also causes the vibrating mass to increase on the quartz crystal surface, and this make resonance frequency decreases. The aim of the study was to achieve an understanding of the information provided by measuring the shifts in the resonance frequency of the QCM with different metal electrodes (Cr, Mo, W, and Au) in saccharide solutions. Resonance frequency shift (ΔFw) of the QCM with gold electrodes was found more responsive compared to chromium, molybdenum and tungsten electrodes in saccharide solutions. The determination of parameter K, the coefficient of the equation that governs the relationship between ΔFw , viscosity and density is one of the major objectives of the project. It was found that value K changes with different saccharide solutions in the range of 0.647x104-3.234x104 cm2 g-1 s-1/2.
format	Thesis
qualification_level	Master's degree
author	Abdul Aziz, Siti Salmiwati
author_facet	Abdul Aziz, Siti Salmiwati
author_sort	Abdul Aziz, Siti Salmiwati
title	Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions
title_short	Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions
title_full	Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions
title_fullStr	Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions
title_full_unstemmed	Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions
title_sort	resonance frequency response of quartz crystal microbalance with different metal electrodes in saccharide solutions
granting_institution	Universiti Putra Malaysia
granting_department	Science
publishDate	2008
url	http://psasir.upm.edu.my/id/eprint/5097/1/FS_2008_5.pdf
_version_	1747810350813675520

Resonance Frequency Response of Quartz Crystal Microbalance with Different Metal Electrodes in Saccharide Solutions

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