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Performance optimization of a DLD microfluidic device for separating deformable CTCs.

Roya Mohammadali1, Morteza Bayareh1, Afshin Ahmadi Nadooshan1

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This summary is machine-generated.

This study optimizes deterministic lateral displacement (DLD) microfluidic devices for isolating circulating tumor cells. The research proposes a new correlation to predict cell displacement based on key parameters, enhancing isolation efficiency.

Keywords:
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Area of Science:

  • Microfluidics
  • Biotechnology
  • Cell separation

Background:

  • Deterministic lateral displacement (DLD) devices utilize micro-post arrays to separate particles.
  • Pillar configuration critically impacts the isolation efficiency of DLD devices.
  • Optimizing DLD for deformable circulating tumor cell isolation is crucial for cancer diagnostics.

Purpose of the Study:

  • To optimize the performance of DLD microfluidic devices for isolating deformable circulating tumor cells.
  • To develop a predictive correlation for cell lateral displacement (DLD) within these devices.
  • To identify key input parameters influencing cell isolation efficiency.

Main Methods:

  • Numerical simulations were performed to analyze DLD device performance.
  • The response surface method was employed for optimizing device parameters.
  • A correlation was derived to estimate DLD based on input variables.

Main Results:

  • The study identified cell diameter, Young's modulus, Reynolds number, and pillar tilt angle as key input variables.
  • A novel correlation was proposed to estimate cell lateral displacement (DLD).
  • Young's modulus and Reynolds number were found to have the maximum and minimum impacts on cell displacement, respectively.

Conclusions:

  • The optimized DLD device design enhances the isolation of deformable circulating tumor cells.
  • The derived correlation provides a valuable tool for predicting and optimizing DLD performance.
  • This work contributes to advancing microfluidic-based cell separation technologies.