2.1.4 - Interfacial Direct Printing (IDP) of SU-8: Fabrication of Molds with Smooth Round Channels
- Event
- EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich - Band
- Lectures
- Chapter
- Microfluidic Devices, Lab on a Chip, µTAS, Organ on Chip Systems
- Author(s)
- R. Dezauzier, M. Breitfeld, C. L. Dietsche, P. S. Dittrich - ETH Zürich,Basel (Switzerland)
- Pages
- 78 - 79
- DOI
- 10.5162/eurosensors2026/2.1.4
- ISBN
- 978-3-910600-12-6
- Price
- free
Abstract
In this study, we introduce a new process for the fabrication of microfluidic molds referred to as Interfacial direct printing (IDP). IDP allows the fabrication of smooth semi-round SU-8 structures on a glass slide, which is not possible with standard photolithography. The photoresist is deposited via a capillary on a moving substrate placed inside an oil bath, forming SU-8 lines with semi-round cross-section shaped by acting interfacial forces. After UV treatment and baking, the structures can be used for soft lithography. Round shaped channels are of particular interest for microfluidic organ-on-chip and diagnostic devices.