期刊
LAB ON A CHIP
卷 14, 期 15, 页码 2610-2613出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4lc00320a
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类别
资金
- Alexander-von-Humboldt Professorship
- EU
- federal state of North Rhine-Westphalia [EFRE 30 00 883 02]
- I3TM Seed Fund Program
- EnvisionTEC GmbH
Polydimethylsiloxane is a translucent and biologically inert silicone material used in sealants, biomedical implants and microscale lab-on-a-chip devices. Furthermore, in membrane technology, polydimethylsiloxane represents a material for separation barriers as it has high permeabilities for various gases. The facile handling of two component formulations with a silicone base material, a catalyst and a small molecular weight crosslinker makes it widely applicable for soft-lithographic replication of two-dimensional device geometries, such as microfluidic chips or micro-contact stamps. Here, we develop a new technique to directly print polydimethylsiloxane in a rapid prototyping device, circumventing the need for masks or sacrificial mold production. We create a three-dimensional polydimethylsiloxane membrane for gas-liquid-contacting based on a Schwarz-P triple-periodic minimal-surface, which is inaccessible with common machining techniques. Direct 3D-printing of polydimethylsiloxane enables rapid production of novel chip geometries for a manifold of lab-on-a-chip applications.
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