Contamination of PDMS microchannels by lithographic molds.
basic_science · Level V
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- Record sourced from PubMed, PMID 24080639.
- Also identified by DOI 10.1039/c3lc50641j.
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Abstract
By use of synchrotron X-ray fluorescence and Rutherford backscattering spectrometry, we show the SU-8 soft lithographic process contaminates PDMS. Residues of the antimony containing photoinitiator are transferred from the master mold to the surface of PDMS, uncontrollably intensifying the surface potential, leading to electroosmotic flow variability in PDMS microfluidic devices.
Medical subject headings
- Dimethylpolysiloxanes
- Microfluidic Analytical Techniques