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A MEMS viscometer for unadulterated human blood
journal contribution
posted on 2023-06-08, 21:34 authored by P D Smith, Rupert YoungRupert Young, Chris ChatwinChris ChatwinThe design and theoretical modelling of an oscillating micro-mechanical-viscometer designed for the measurement of whole unadulterated human blood, is described. The proposed device utilises the dependence of the squeeze-film damping ratio on properties of the surrounding fluid to measure fluid viscosity using an oscillating plate structure. The optimum geometrical configuration for the device structure has been investigated and a methodology for defining the optimum configuration of the micro-mechanical sensor identified. This is then applied to calculate the predicted noise equivalent viscosity change . It was found that the device performance is limited by electronic noise within the detection circuitry rather than thermal mechanical noise. An electronic noise limited measurement resolution of , is predicted for measurement over a shear range of , at a measurement bandwidth of . The linearity of response of the micro-mechanical-viscometer is considered and the device is predicted to provide a linear measurement response.
History
Publication status
- Published
File Version
- Accepted version
Journal
MeasurementISSN
0263-2241Publisher
ElsevierIssue
1Volume
43Page range
144-151Department affiliated with
- Engineering and Design Publications
Full text available
- Yes
Peer reviewed?
- Yes