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A MEMS viscometer for unadulterated human blood

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journal contribution
posted on 2023-06-08, 21:34 authored by P D Smith, Rupert YoungRupert Young, Chris ChatwinChris Chatwin
The 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

Measurement

ISSN

0263-2241

Publisher

Elsevier

Issue

1

Volume

43

Page range

144-151

Department affiliated with

  • Engineering and Design Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-07-13

First Open Access (FOA) Date

2015-07-13

First Compliant Deposit (FCD) Date

2015-07-13

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