The Effective Factors on the sensitivity of C4D Sensor on a Chip

Document Type : Original Article

Authors

1 Department of Electrical Engineering, Yazd Branch, Islamic Azad University, Yazd 89168-71967, Iran.

2 Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.

3 Department of Electrical Engineering, Yazd branch,Islamic Azad University, Yazd, Iran.

Abstract

This paper focuses on minimizing the C4D sensor for the lab-on-a-chip (LOC) and how the parameters such as the chip manufacturing materials, ion charge, frequency, and the geometry of the electrodes affect it through COMSOL software. The simulation results show if the chip is made of glass, then the current density increases to 0. 003 A/m2 at the time of ion presence. Also, the current density reaches 0.0015 A/m2 when the chip is made of poly dimethyl siloxane (PDMS). By using a combination of these two materials, in addition to achieving the benefits of PMDS, the sensitivity of the sensor also increases. Moreover, the entrance frequency enhancement prevents any sudden flow density change. By changing the ionic charge from 1 to 5, conductivity changes from 1×10-7 to 8×10-7 Siemens/m. The design of the chip with four electrodes also increases the sensitivity of the sensor due to the strong current density in the solution body. Choosing the appropriate C4D sensor on a high-sensitivity chip can in the future provide many advancements in medical and medical diagnostics.

Keywords

Main Subjects

References

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Electronics Industries
Volume 10, Issue 2 - Serial Number 38
September 2019
Pages 51-58

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History

  • Receive Date: 08 August 2018
  • Revise Date: 24 April 2019
  • Accept Date: 15 July 2019
  • First Publish Date: 23 August 2019

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