Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Measurement of dynamic properties of small volumes of fluid using MEMS
AU - Cheneler, David
AU - Ward, Michael C. L.
AU - Adams, Michael J.
AU - Zhang, Zhibing
PY - 2008/3/28
Y1 - 2008/3/28
N2 - A model based on the response of a micro-rheometer which permits the measurement of the linear viscoelastic properties of small volumes of a fluid is described. The configuration involves a liquid being contained within a capillary bridge between two flat smooth parallel platens that are actuated sinusoidally using a compliant MEMS device. Approximate closed-form equations are derived to analyse the data taking account of both the capillary forces and those arising from viscoelastic flow. The approximate theory is compared to a full numerical simulation of the response of the MEMS rheometer and the validity is discussed.
AB - A model based on the response of a micro-rheometer which permits the measurement of the linear viscoelastic properties of small volumes of a fluid is described. The configuration involves a liquid being contained within a capillary bridge between two flat smooth parallel platens that are actuated sinusoidally using a compliant MEMS device. Approximate closed-form equations are derived to analyse the data taking account of both the capillary forces and those arising from viscoelastic flow. The approximate theory is compared to a full numerical simulation of the response of the MEMS rheometer and the validity is discussed.
KW - Squeeze flow
KW - Capillary bridges
KW - MEMS
KW - Viscoelastic properties
KW - Complex fluid
U2 - 10.1016/j.snb.2007.10.031
DO - 10.1016/j.snb.2007.10.031
M3 - Journal article
VL - 130
SP - 701
EP - 706
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
SN - 0925-4005
IS - 2
ER -