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SU-8 free-standing microfluidic probes

Anna Kim (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; Kiryl Kustanovich (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; D. Baratian ; Alar Ainla (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; Mehrnaz Shaali (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; Gavin Jeffries (Institutionen för kemi och kemiteknik, Fysikalisk kemi) ; Aldo Jesorka (Institutionen för kemi och kemiteknik, Fysikalisk kemi)
Biomicrofluidics (1932-1058). Vol. 11 (2017), 1,
[Artikel, refereegranskad vetenskaplig]

We present a process for fabrication of free-standing SU-8 probes, with a dry, mechanical release of the final micro-devices. The process utilizes the thermal release tape, a commonly used cleanroom material, for facile heat-release from the sacrificial layer. For characterization of the SU-8 microfluidic probes, two liquid interfaces were designed: a disposable interface with integrated wells and an interface with external liquid reservoirs. The versatility of the fabrication and the release procedures was illustrated by further developing the process to functionalize the SU-8 probes for impedance sensing, by integrating metal thin-film electrodes. An additional interface scheme which contains electronic components for impedance measurements was developed. We investigated the possibilities of introducing perforations in the SU-8 device by photolithography, for solution sampling predominantly by diffusion. The SU-8 processes described here allow for a convenient batch production of versatile free-standing microfluidic devices with well-defined tip-geometry. (C) 2017 Author(s).

Nyckelord: multifunctional pipette, high-throughput, cell analysis, single cells, fabrication, devices, sensor, microstructures, technology, surfaces, Biochemistry & Molecular Biology, Biophysics



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Denna post skapades 2017-03-31. Senast ändrad 2017-10-03.
CPL Pubid: 248762

 

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