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Disposable silicon-glass microfluidic devices: precise, robust and cheap.

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We developed a cost-effective method to make silicon-glass microfluidic chips disposable, reducing costs by 99%. This innovation enables wider use of precise microfluidic technology in energy and carbon capture applications.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Microfluidics

Background:

  • Silicon-glass microfluidics offer high precision, robustness, and optical clarity.
  • Current fabrication costs are high (approx. $500/chip), limiting widespread adoption and reuse.

Purpose of the Study:

  • To develop a cost-effective method for fabricating disposable silicon-glass microfluidic chips.
  • To enable broader applications of microfluidics in fields like energy and carbon capture.

Main Methods:

  • Reduced chip area and implemented a whole-chip manifolding strategy for fluid connectivity.
  • Validated the system at high pressure (130 bar) and high temperature (95 °C).

Main Results:

  • Achieved a two-orders-of-magnitude cost reduction per chip (approx. $5/chip).
  • Demonstrated effective heavy oil recovery (~80%) using surfactant polymer solutions in an energy application.
  • Measured the dilation of an ionic liquid analog in gaseous and supercritical CO2 for carbon capture.

Conclusions:

  • The new method makes silicon-glass microfluidics disposable, significantly lowering costs.
  • This approach expands the accessibility and applicability of advanced microfluidic systems.
  • The technology is validated for demanding conditions in energy and carbon capture research.