Transversely Oscillating MEMS Viscometer: The “Spider”

Ronaldson, K. A.; Fitt, A.D.; Goodwin, Anthony R. H.; Wakeham, W. A.

doi:10.1007/s10765-006-0115-5

Cited by 17 publications

(18 citation statements)

References 8 publications

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“…Resonating cantilevers and plates have been the most frequently used type of MEMS viscometers [16][17][18] which are usually actuated by means of piezoelectric material [19][20][21], magnetic field [22][23][24] or alternating electricity current [25][26][27]. Theoretical studies and models connect variations in fluid density and viscosity to the shift in resonant frequency and quality factor, respectively [28][29][30].…”

Section: Vibrating Microcantilevermentioning

confidence: 99%

“…One example, used for viscometric study of blood, was the integration of two electrodes in a microchannel and monitoring of the changes in fluid impedance [31]. Considering the non-Newtonian effect of fluids, some MEMS-based microplate oscillating systems have been designed and the governing equations were derived [26] as Equation (3),…”

Section: Vibrating Microcantilevermentioning

confidence: 99%

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3D Suspended Polymeric Microfluidics (SPMF3) with Flow Orthogonal to Bending (FOB) for Fluid Analysis through Kinematic Viscosity

2017

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Abstract:Measuring of fluid properties such as dynamic viscosity and density has tremendous potential for various applications from physical to biological to chemical sensing. However, it is almost impossible to affect only one of these properties, as dynamic viscosity and density are coupled. Hence, this paper proposes kinematic viscosity as a comprehensive parameter which can be used to study the effect of fluid properties applicable to various fluids from Newtonian fluids, such as water, to non-Newtonian fluids, such as blood. This paper also proposes an ideal microplatform, namely polymeric suspended microfluidics (SPMF 3 ), with flow plane orthogonal to the bending plane of the structure, along with tested results of various fluids covering a wide range of engineering applications. Kinematic viscosity, also called momentum diffusivity, considers changes in both fluid intermolecular forces and molecular inertia that define dynamic viscosity and fluid density, respectively. In this study a 3D suspended polymeric microfluidic system (SPMF 3 ) was employed to detect changes in fluid parameters such as dynamic viscosity and density during fluid processes. Using this innovative design along with theoretical and experimental results, it is shown that, in fluids, the variations of fluid density and dynamic viscosity are not easily comprehensible due to their interconnectivity. Since any change in a fluid will affect both density and dynamic viscosity, measuring both of them is necessary to identify the fluid or process status. Finally, changes in fluid properties were analyzed using simulation and experiments. The experimental results with salt-DI water solution and milk with different fat concentrations as a colloidal fluid show that kinematic viscosity is a comprehensive parameter that can identify the fluids in a unique way using the proposed microplatform.

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Section: Vibrating Microcantilevermentioning

confidence: 99%

Section: Vibrating Microcantilevermentioning

confidence: 99%

3D Suspended Polymeric Microfluidics (SPMF3) with Flow Orthogonal to Bending (FOB) for Fluid Analysis through Kinematic Viscosity

2017

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“…One typical parameter detected by sensors is the viscosity. (Agoston et al, 2004;Agoston et al, 2005b;Ronaldson et al, 2006) Here, it has to be pointed out that each sensor principle measures a different aspect of the viscosity. Electrical parameters of the oil such as permittivity or conductivity (Agoston et al, 2004;Basu et al, 2000;Gegner et al, 2010) are easy to measure and can be realized in robust devices.…”

Section: Sensors For Online Oil Condition Monitoringmentioning

confidence: 99%

Determination of the Impact of Biogas on the Engine Oil Condition Using a Sensor Based on Corrosiveness

Schneidhofer¹,

Sen²,

Dörr³

2011

Biofuel Production-Recent Developments and Prospects

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“…At the point when an endothermic response happens [11], the Heat required is retained from the warm vitality of the arrangement [12], which diminishes its temperature. The temperature change, alongside the particular Heat and mass of the arrangement [13], would then be able to be utilized to figure the measure of Heat included [14].…”

Section: Introductionmentioning

confidence: 99%

Specific Heat of Solution of HCl-NaOH Reaction by a Simple Handmade Calorimeter

Fazal-ur-Rahman¹,

Haider²

2017

J Phys Chem Biophys

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A research study was performed by couple of students under the research project of bachelor in chemistry. The main goal to perform this project was to determine the changes in temperature of solution when an acid and a base were mixed together inside the cups of handmade calorimeter and their reaction was proceeded under the lab conditions and to determine either reaction would be exothermic or endothermic. Basically, from these changes in temperature of solution, the specific Heat of solution or Heat of reaction was determining. Temperature changes were observed using analytical thermometer with stop watch and all changes were noted on datasheet, while after completion of the whole experimental work, a thermodynamic equation of specific Heat was applied to calculate the Specific Heat of solution mathematically in numeric value which was 3214.72476 J or 3.21472 KJ. It was seen that as the base was mixed into acid, the temperature of solution was increased to maximum rapidly showing the exothermic reaction. After reaching to maximum range, the temperature decreased gradually to its minimum range being constant and consistent. The consistent temperature range terminated the reaction. All variations in temperature ranges were recorded very carefully and a table with a graph showing all ups and downs in temperature ranges was drawn on MS Excel Data Sheet.

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Transversely Oscillating MEMS Viscometer: The “Spider”

Cited by 17 publications

References 8 publications

3D Suspended Polymeric Microfluidics (SPMF3) with Flow Orthogonal to Bending (FOB) for Fluid Analysis through Kinematic Viscosity

3D Suspended Polymeric Microfluidics (SPMF3) with Flow Orthogonal to Bending (FOB) for Fluid Analysis through Kinematic Viscosity

Determination of the Impact of Biogas on the Engine Oil Condition Using a Sensor Based on Corrosiveness

Specific Heat of Solution of HCl-NaOH Reaction by a Simple Handmade Calorimeter

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