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Updated: Jun 2, 2026

The Microfluidic Probe: Operation and Use for Localized Surface Processing
08:07

The Microfluidic Probe: Operation and Use for Localized Surface Processing

Published on: June 4, 2009

A vertical microfluidic probe.

G V Kaigala1, R D Lovchik, U Drechsler

  • 1IBM Research-Zurich, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland.

Langmuir : the ACS Journal of Surfaces and Colloids
|April 12, 2011
PubMed
Summary
This summary is machine-generated.

This study introduces the vertical microfluidic probe (vMFP), a versatile scanning tool for precise surface chemistry. The vMFP enables localized chemical reactions with picoliter reagent volumes, enhancing microscale surface processing.

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Area of Science:

  • Microfluidics
  • Surface Science
  • Nanotechnology

Background:

  • Localized chemical events on surfaces are crucial for various applications.
  • Previous microfluidic probe (MFP) technology enabled surface chemistry but had implementation limitations.

Purpose of the Study:

  • To present a novel and versatile vertical microfluidic probe (vMFP) for scanning mode surface processing.
  • To overcome limitations of earlier MFP technology for practical implementation.

Main Methods:

  • Developed a vMFP head with integrated microfluidic channels fabricated in silicon.
  • Utilized a scanning mode with the head positioned 1-30 μm from the surface.
  • Employed computer-controlled stages for precise surface scanning with picoliter reagent volumes.

Main Results:

  • Fabricated vMFP heads with channel dimensions from 1x1 μm to 50x50 μm for localized liquid handling.
  • Demonstrated advanced design strategies for high-yield fabrication and diverse applications.
  • Characterized flow confinement and developed methods for stable surface processing over extended periods.

Conclusions:

  • The vMFP offers a versatile, reconfigurable, and reagent-efficient platform for microscale surface processing.
  • Its ease of use and adaptability make it suitable for microtechnologists and the chemical/biomedical communities.
  • The vMFP enables precise surface patterning, cell inactivation, and cell staining applications.