Laser-made micro gels on acid

   July 7/14, 2008
Make microscopic objects by firing lasers into solutions of proteins rather than the usual liquid plastics and you get biocompatible structures that change shape with changes in acidity or other chemical properties.

These three-dimensional hydrogel objects can be used to trap and release cells like bacteria for experiments. They can also be used as mechanical components of biochips and dynamically focused lenses.

Research paper:
Multiphoton Fabrication of Chemically Responsive Protein Hydrogels for Microactuation
Proceedings of the National Academy of Sciences, July 1, 2008

Researcher's homepage:
Jason Shear

Related stories and briefs:
Gel-driven biochip
Wet biochip preserves proteins
Gels make micro plumbing


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