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3D printed nozzles on a silicon fluidic chip

Citation Link: https://doi.org/10.15480/882.2171
Publikationstyp
Journal Article
Publikationsdatum
2019-03-20
Sprache
English
Author
Bohne, Sven 
Heymann, Michael 
Chapman, Henry N. 
Trieu, Hoc Khiem 
Bajt, Saša 
Institut
Mikrosystemtechnik E-7 
DOI
10.15480/882.2171
TORE-URI
http://hdl.handle.net/11420/2283
Lizenz
https://creativecommons.org/licenses/by/4.0/
Enthalten in
Review of scientific instruments 
Volume
90
Issue
3
Article Number
035108
Citation
Review of scientific instruments 3 (90): 035108 (2019-03-20)
Publisher DOI
10.1063/1.5080428
Scopus ID
2-s2.0-85063324695
Publisher
American Institute of Physics
Serial femtosecond crystallography is a new method for protein structure determination utilizing intense and destructive X-ray pulses generated by free-electron lasers. The approach requires the means to deliver hydrated protein crystals to a focused X-ray beam and replenish them at the repetition rate of the pulses. A liquid-jet sample delivery system where a gas dynamic virtual nozzle is printed directly on a silicon-glass microfluidic chip using a 2-photon-polymerization 3D printing process is implemented. This allows for rapid prototyping and high-precision production of nozzles to suit the characteristics of a particular sample and opens up the possibility for high-throughput and versatile sample delivery systems that can integrate microfluidic components for sample detection, characterisation, or control. With the hybrid system described here, stable liquid jets with diameters between 1.5 µm at liquid flow rate of 1.5 µl/min and more than 20 µm at liquid flow rate of 100 µl/min under atmospheric and vacuum conditions are generated. The combination of 2D lithography with direct 3D printing may streamline the integration of free-form-features and also facilitate scale-up production of such integrated microfluidic devices that may be useful in many other applications such as flow cytometry and optofluidics.
DDC Class
600: Technik
Projekt(e)
Micro- and nano-devices for advanced accelerators and X-ray science 
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