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Capacitive effect of coplanar electrodes partially outside the microchannel region for underwater microfluidic-based sensor

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Title Capacitive effect of coplanar electrodes partially outside the microchannel region for underwater microfluidic-based sensor
 
Creator Rahman, M.F.A.
Manaf, A.A.
Arshad, M.R.
 
Subject Capacitive sensing
Micro fluidic-based
Coplanar electrodes
Underwater acoustic
 
Description 987-991
This work aims to obtain the capacitance
resulted from the coplanar electrode configuration meant to be used for
underwater sensing application. Coplanar structure is proposed to overcome the
complexity of parallel electrode microfabrication processes which require
repeating process of layer deposition. 
Work is achieved through Finite Element Model (FEM) using ANSYS 12.1 and
the result is compared with analytical equation for validation purpose. The model
is then modified geometrically to investigate the effect of extending the
electrodes beyond the microchannel region. This is due to a very small size of
microchannel which sometimes requires the electrodes to be fabricated at larger
dimension to increase the detection capability. The result shows that for the
specified design (methanol as microfluidic material and PDMS as body structure),
electrode width is not a dominant factor that contributes to the detection
capability if located outside the microchannel region. Beyond the microchannel
region, even the electrodes width is increased, the capacitance value seems to
be decreasing. 
 
Date 2014-01-10T11:51:29Z
2014-01-10T11:51:29Z
2013-12
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25469
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(8) [December 2013]