Piezoelectric transducer for determination of metals at the micromolar level

Jones, Jerry L.; Mieure, James P.

doi:10.1021/ac60272a016

Cited by 40 publications

(16 citation statements)

References 18 publications

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“…The QCM has been developed to measure molecular adsorption under vacuum [25,26]. In this case the measured resonance frequency shift of an oscillating quartz is linearly proportional to the adsorbed mass according to the Sauerbrey equation [27].…”

Section: Introductionmentioning

confidence: 99%

Cell spreading on quartz crystal microbalance elicits positive frequency shifts indicative of viscosity changes

Marxer

Coen

Greber

et al. 2003

Analytical and Bioanalytical Chemistry

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Cell attachment and spreading on solid surfaces was investigated with a home-made quartz crystal microbalance (QCM), which measures the frequency, the transient decay time constant and the maximal oscillation amplitude. Initial interactions of the adsorbing cells with the QCM mainly induced a decrease of the frequency, coincident with mass adsorption. After about 80 min, the frequency increased continuously and after several hours exceeded the initial frequency measured before cell adsorption. Phase contrast and fluorescence microscopy indicated that the cells were firmly attached to the quartz surface during the frequency increase. The measurements of the maximal oscillation amplitude and the transient decay time constant revealed changes of viscoelastic properties at the QCM surface. An important fraction of these changes was likely due to alterations of cytosolic viscosity, as suggested by treatments of the attached cells with agents affecting the actin and microtubule cytoskeleton. Our results show that viscosity variations of cells can affect the resonance frequency of QCM in the absence of apparent cell desorption. The simultaneous measurements of the maximal oscillation amplitude, the transient decay time constant and the resonance frequency allow an analysis of cell adsorption to solid substratum in real time and complement cell biological methods.

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Section: Introductionmentioning

confidence: 99%

Cell spreading on quartz crystal microbalance elicits positive frequency shifts indicative of viscosity changes

Marxer

Coen

Greber

et al. 2003

Analytical and Bioanalytical Chemistry

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“…Then the aggressive solution was immediately added to the cell. For experiments performed on iron surfaces, the layers were electrodeposited from a deposition bath containing 0.9 M FeSO 4 +0.17 M Al 2 (SO 4 ) 3 .…”

Section: Methodsmentioning

confidence: 99%

“…EQCM was often used as an ex situ technique to sense mass changes at electrode surfaces during and after some processes (such as electrodeposition or dissolution of metals) [3]. Several research groups developed in situ electrochemical quartz crystal mass sensors [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

EQCM study of copper and iron corrosion inhibition in presence of organic inhibitors and biocides

Telegdi

Shaban

Kálmán

2000

Electrochimica Acta

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Attention has been devoted to the application of quartz crystal microbalance (QCM) in the field of corrosion and corrosion inhibition. In-situ measurements were performed on copper and iron surfaces. Copper corrosion inhibition by the application of several inhibitors was followed by QCM. Copper corrosion inhibition in different electrolyte solutions such as acidic sodium sulphate and neutral sodium chloride were investigated. Different inhibitor compounds were tested for protection against copper corrosion. Three different groups of inhibitors were investigated; aromatic sulfoxides, benzo-hydroxamic acid derivatives, and azole derivatives. Among the tested sulfoxides, di-benzyl-sulfoxide (DBSO) produced the best protection, while p-chloro-benzo-hydroxamic acid showed excellent protection among the benzo-hydroxamic acid derivatives. Among the tested azole derivatives, 5-mercapto-1-phenyl-tetrazole (5-McPhTT) and 5-(4%-isopropylbenzylidene)-2,4-dioxotetrahydro-1,3-thiazole (5-IPBDT) showed excellent inhibition properties against copper corrosion in acidic media. The effect of biocides, namely N-hydroxyalkylated amino acids, on biofilm formation has been investigated, too. From the attained results, it is clear that QCM is an essential tool for obtaining important information on corrosion inhibition and its mechanism.

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“…The metal surface affixed to both sides of the quartz crystal is the sensing surface and acts as an electrode, making it a useful tool in electrochemical applications as well. The first work using electrochemical deposition of metals on the electrodes of a QCM dates back to 1969 [9,10]. A detailed study that brought QCM into the prominence of electrochemical and electroanalytical work presented Bruckenstein and Shay [11].…”

Section: Introductionmentioning

confidence: 99%

Impedance Characterization of a Quartz Crystal Microbalance

Vanýsek

Delia

2006

Electroanalysis

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The impedance characteristics of the quartz crystal used in quartz crystal microbalance is considered a higher dimension of information that can be obtained in addition to the resonant frequency change of the crystal. The impedance allows calculating the quality factor of the oscillator that is very closely related to the mechanical rigidity of the material, which is adsorbed or deposited on the quartz crystal. This paper concentrates on utilizing an impedance analyzer, often found in electroanalytical laboratories, instead of the usually required network analyzer.

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Piezoelectric transducer for determination of metals at the micromolar level

Cited by 40 publications

References 18 publications

Cell spreading on quartz crystal microbalance elicits positive frequency shifts indicative of viscosity changes

Cell spreading on quartz crystal microbalance elicits positive frequency shifts indicative of viscosity changes

EQCM study of copper and iron corrosion inhibition in presence of organic inhibitors and biocides

Impedance Characterization of a Quartz Crystal Microbalance

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