PDMS double casting method enabled by plasma treatment and alcohol passivation
| Autor: | Seung-Jin Lee, Dongchan Ahn, Sung-Hwan Kim, Joong Yull Park |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Yield (engineering)
Materials science Passivation macromolecular substances 02 engineering and technology 010402 general chemistry medicine.disease_cause 01 natural sciences chemistry.chemical_compound Mold Materials Chemistry medicine Electrical and Electronic Engineering Instrumentation Polydimethylsiloxane technology industry and agriculture Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Casting 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Chemical bond Chemical engineering Methanol 0210 nano-technology |
| Zdroj: | Sensors and Actuators B: Chemical. 293:115-121 |
| ISSN: | 0925-4005 |
| Popis: | We propose a simple and efficient polydimethylsiloxane (PDMS) double casting method using plasma treatment followed by methanol or ethanol treatment. The plasma treatment oxidizes the functional groups on the surface of the PDMS mold, showing an increase in the concentration of hydroxyl functional groups (OH); subsequent exposure to the alcohols prevents adherence of the second PDMS casting. This process effectively passivates the surface of the PDMS master mold to suppress further chemical bonding. This two-step surface treatment ensures excellent double casting performance at a single micron scale resolution to yield micron level reproduction of objects featuring high aspect ratios, two-dimensional surface micropatterns, and complex three-dimensional microstructures. |
| Databáze: | OpenAIRE |
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