Related Experiment Video
Updated: Jul 6, 2026
10:24
Preparation of 3D Collagen Gels and Microchannels for the Study of 3D Interactions In Vivo
Published on: May 9, 2016
Glass coating for PDMS microfluidic channels by sol-gel methods.
Adam R Abate1, Daeyeon Lee, Thao Do
1School of Engineering and Applied Sciences/Department of Physics, Harvard University, Cambridge, Massachusetts, USA.
Lab on a Chip
|March 29, 2008
Summary
This study introduces a sol-gel coating for polydimethylsiloxane (PDMS) microfluidic devices, enhancing solvent resistance. The glass-like layer improves device performance and allows for tailored surface properties.
Area of Science:
- Materials Science
- Chemical Engineering
- Microfluidics
Background:
- Soft lithography with polydimethylsiloxane (PDMS) enables easy and low-cost fabrication of microfluidic devices.
- PDMS exhibits significant swelling in organic solvents, leading to device performance degradation.
Purpose of the Study:
- To develop a method for coating PDMS microfluidic channels to improve chemical resistance.
- To enhance the robustness and functionality of PDMS-based microfluidic devices.
Main Methods:
- Utilized sol-gel chemistry to create a glass-like coating layer within PDMS channels.
- Employed soft lithography for device fabrication and subsequent coating application.
Main Results:
- The glass-like coating significantly increased the chemical resistance of PDMS channels.
- The coating allowed for functionalization, enabling precise control over interfacial properties.
- Combined the fabrication advantages of soft lithography with the chemical robustness of glass.
Conclusions:
- The sol-gel coating method offers a viable solution to overcome PDMS solvent swelling limitations.
- This approach enhances microfluidic device performance, durability, and versatility for various applications.
