Microfluidic probe: a new tool for integrating microfluidic environments and electronic wafer-probing

Area of Science:

• Microfluidics
• Electronics Engineering
• Materials Science

Background:

• Integrating microfluidic systems with electronic probing is challenging.
• Current methods often require device modification or dicing.
• Precise control over small die sites is crucial for advanced applications.

Purpose of the Study:

• To introduce a new "microfluidic probe" tool.
• To enable rapid and repeatable fluidic and electronic addressing of small die sites.
• To demonstrate localized chemical modification of substrates.

Main Methods:

• Fabrication using standard soft-lithography and basic machining.
• Integration of microfluidic channels with electronic probing.
• Application for addressing small die sites on various substrates.
• Demonstration of locally patterned chemical modification.

Main Results:

• The microfluidic probe allows non-destructive, precise addressing of small die sites.
• Repeatable fluidic and electronic manipulation was achieved.
• Successful demonstration of locally patterned chemical modification on a substrate.
• The technique is accessible due to easy fabrication.

Conclusions:

• The microfluidic probe offers a versatile and accessible solution for integrating fluidics and electronics.
• This tool simplifies localized chemical modification and device characterization.
• It provides a valuable technique for researchers in microfluidics and electronics.