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Three-dimensional Microfluidic Channel with Arbitrary Length and Configuration Fabricated Inside Glass by Femtosecond Laser Direct Writing

Overview
Journal Opt Lett
Specialty Ophthalmology
Date 2010 Oct 5
PMID 20890341
Citations 10
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Abstract

We demonstrate, for the first time to the best of our knowledge, fabrication of three-dimensional microfluidic channels with arbitrary lengths and configurations inside glass by femtosecond laser direct writing. The main fabrication process includes two steps: (1) direct formation of hollow microchannels in a porous glass substrate immersed in water by femtosecond laser ablation and (2) postannealing of the glass substrate at ∼1150°C by which the porous glass can be consolidated. We show that a square-wavelike channel with a total length of ∼1.4 cm and a diameter of ∼64 μm can be easily produced ∼250 μm beneath the glass surface.

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