Planar Imaging of Stagnant and Hydrodynamic Fluid using Miniaturized ECT Device

Leow, Pei Ling

doi:10.30880/ijie.2018.10.08.020

Cited by 1 publication

(2 citation statements)

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“…The development of on-chip ECT further enrich the lab-on-chip application in handling the samples on a micro-platform by providing the three-dimensional imaging. The samples could be flowing fluids [15] or cell culture [21], which present permittivity difference from the background. For the future work, advanced image reconstruction algorithms can be applied to further study the potential and limit of the suggested electrode configuration.…”

Section: Discussionmentioning

confidence: 99%

“…By adopting this planar electrode structure, the ECT was shrunk down for imaging the fluids and cell cultures on a mircroplatform. For example, using the on-chip ECT, the stagnent and flowing fluids within the microchamber were imaged successfully by mounting single sensing plane with 8 planar electrodes to the bottom of the microchamber [15]. Although the flowing regime was indicated properly, the images were limited to two-dimensions and the depth information could not be provided.…”

Section: Introductionmentioning

confidence: 99%

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Electrode configuration study for three-dimensional imaging of on-chip ECT

et al. 2023

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Conventional electrical capacitance tomography (ECT) is widely used for monitoring the fluids flow in a pipeline. As the emergence of microfluidics, the tomography system has been miniaturized and integrated into the microfludic platform for imaging purposes. The on-chip ECT is designed to monitor the permittivity distribution of the micro-platform by integrating the planar electrodes with the sensing region. However, limited research has been reported on the electrode design of on-chip ECT, especially for three-dimensional imaging. Thus, this study investigated the electrode design of an on-chip ECT that is capable for image reconstruction in three-dimensions. Four different electrode configurations with different numbers of electrode and arrangements are investigated by simulation to determine the appropriate configuration for three-dimensional imaging. The electrode dimension is optimized based on the sensitivity distribution using the sensitivity variation parameter (SVP). The simulation results shows that the electrode configuration with dual sensing planes enable three-dimensional imaging. The central electrode of each sensing plane is crucial for restoring a floating object. In experiment, the imaging object that was positioned at different vertical and horizontal locations was reconstructed successfully with an average correlation coefficient of 0.4370 using linear back projection (LBP) algorithm. This work has disclosed the appropriate electrode configuration for the three-dimensional imaging of an on-chip ECT system.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%