Measurement of the mass sensitivity of QCM with ring electrodes using electrodeposition

Hu, Jianguo; Huang, Xianhe; Xue, Song; Yesilbas, Göktug; Knoll, Alois; Schneider, Oliver

doi:10.1016/j.elecom.2020.106744

Cited by 14 publications

(5 citation statements)

References 31 publications

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“…The high sensitivity of the QCM microgravimetry (S = 3.78 g cm −2 Hz −1 [ 26 ] ) generally permits an accurate in situ mass determination of physically or (electro)chemically deposited thin films of different nature. Typically, when the layer is rigid and smooth, its deposition triggers a linear decrease of the resonance frequency, f , which can be transformed to the corresponding mass loading, Δ m by applying the Sauerbrey equation, Equation (1).…”

Section: Resultsmentioning

confidence: 99%

Reversible Sodiation of Electrochemically Deposited Binder‐ and Conducting Additive‐Free Si–O–C Composite Layers

et al. 2022

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Binder‐ and conducting additive‐free Si–O–C composite layers are deposited electrochemically under potentiostatic conditions from sulfolane‐based organic electrolyte. Quartz crystal microbalance with damping monitoring is used for evaluation of the layer growth and its physical properties. The sodiation–desodiation performance of the material is afterward explored in Na‐ion electrolyte. In terms of specific capacity, rate capability, and long‐term electrochemical stability, the experiments confirm the advantages of applying the electrochemically formed Si–O–C structure as anode for Na‐ion batteries. The material displays high (722 mAh g−1) initial reversible capacity at j = 70 mA g−1 and preserves stable long‐term capacity of 540 mAh g−1 for at least 400 galvanostatic cycles, measured at j = 150 mA g−1. The observed high performance can be attributed to its improved mechanical stability and accelerated Na‐ion transport in the porous anode structure. The origin of the material electroactivity is revealed based on X‐Ray photoelectron spectroscopic analysis of pristine (as deposited), sodiated, and desodiated Si–O–C layers. The evaluation of the spectroscopic data indicates reversible activity of the material due to the complex contribution of carbon and silicon redox centers.

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Section: Resultsmentioning

confidence: 99%

Reversible Sodiation of Electrochemically Deposited Binder‐ and Conducting Additive‐Free Si–O–C Composite Layers

et al. 2022

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“…but also fully satisfies the three conditions of the Sauerbrey equation. In addition, Gabrielli, and Hu et al used electrochemical deposition coating to verify the mass sensitivity of the QCM [ 43 , 44 , 45 ].…”

Section: Theory and Measuring Methodsmentioning

confidence: 99%

Advances in the Mass Sensitivity Distribution of Quartz Crystal Microbalances: A Review

Huang

Chen

Pan

et al. 2022

Sensors

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A quartz crystal microbalance (QCM) is a typical acoustic transducer that undergoes a frequency shift due to changes in the mass of its surface. Its high sensitivity, robustness, small size design, and digital output have led to its widespread development for application in the fields of chemistry, physics, biology, medicine, and surface science. Mass sensitivity is one of the vital parameters and forms the basis for quantitative analysis using QCMs. This review firstly introduces the importance, definition, calculation, and measuring method of the mass sensitivity and then focuses on reviewing the influence of electrode parameters (including electrode shape, electrode diameter, electrode thickness, electrode material, etc.) on the mass sensitivity distribution of QCMs. Finally, the effect of the operating frequency on the mass sensitivity of QCMs is also analyzed.

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“…Keep in mind that similar molecules can attach to the MIP cavities, culminating in an inaccurate frequency shift of QCM; this undesirable attachment is called nonselective adsorption, which we have discussed in the following sections. Eq describes how the QCM’s frequency shift relates to the change in mass accumulated on its surface. ,, Δ f r stands for the frequency shift, while f 0 is the initial oscillating frequency, Δ m is the change in mass ( g ), A is the effective area (cm 2 ), ρ q is quartz density (g cm –3 ), and μ q stands for quartz shear modulus (g cm –1 s –2 ). It is worth mentioning that this equation is just valid for a thin rigid layer of mass change. , However, many studies in this field focused on fabricating a microfluidic setup that makes the commercial and user-friendly usage of MIP-modified QCM an arduous task. , In order to alleviate the use of MIP-modified QCM sensors, static measurements in the liquid phase were conducted as an alternative to the traditional ways.…”

Section: Introductionmentioning

confidence: 99%

“…Eq 1 describes how the QCM’s frequency shift relates to the change in mass accumulated on its surface. 24 , 31 , 32 Δ f r stands for the frequency shift, while f 0 is the initial oscillating frequency, Δ m is the change in mass ( g ), A is the effective area (cm 2 ), ρ q is quartz density (g cm –3 ), and μ q stands for quartz shear modulus (g cm –1 s –2 ). It is worth mentioning that this equation is just valid for a thin rigid layer of mass change.…”

Section: Introductionmentioning

confidence: 99%

Electric Field-Assisted Molecularly Imprinted Polymer-Modified QCM Sensor for Enhanced Detection of Immunoglobulin

LariMojarad,

Mousavi,

Moeini Manesh

et al. 2024

ACS Omega

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In this study, an electric-field-assisted molecularly imprinted polymer (EFAMIP) as an enhanced form of MIP was developed to improve the MIP-modified quartz crystal microbalance (QCM) biosensors. While exerting a vertical electric field, polymerization of methacrylic acid in the presence of immunoglobulin G (IgG) as the template was initiated, and later, after the template removal process, the EFAMIPs were obtained. The polymer surface characterization was conducted by using a scanning electron microscope. The impact of electric field direction on IgG binding sites, forming either EFAMIP-F ab or EFAMIP-F c , was assessed. Next, the static measurement results in liquid for EFAMIP-modified QCM and MIP-modified QCM were compared. While encompassing IgG, EFAMIP-modified QCMs exhibited up to a 113.5% higher frequency shift than typical MIP in time-limited detection. The final frequency shift of EFAMIP, which determines the detection limit of IgG, was improved up to 12.5% compared to typical MIP. Moreover, the EFAMIP-F ab performance was promising for the selective detection of IgG in a solution containing different types of immunoglobulins.

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Measurement of the mass sensitivity of QCM with ring electrodes using electrodeposition

Cited by 14 publications

References 31 publications

Reversible Sodiation of Electrochemically Deposited Binder‐ and Conducting Additive‐Free Si–O–C Composite Layers

Reversible Sodiation of Electrochemically Deposited Binder‐ and Conducting Additive‐Free Si–O–C Composite Layers

Advances in the Mass Sensitivity Distribution of Quartz Crystal Microbalances: A Review

Electric Field-Assisted Molecularly Imprinted Polymer-Modified QCM Sensor for Enhanced Detection of Immunoglobulin

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