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Ultracompact 3D microfluidics for time-resolved structural biology
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Journal Article
Ultracompact 3D microfluidics for time-resolved structural biology
2020
Overview
To advance microfluidic integration, we present the use of two-photon additive manufacturing to fold 2D channel layouts into compact free-form 3D fluidic circuits with nanometer precision. We demonstrate this technique by tailoring microfluidic nozzles and mixers for time-resolved structural biology at X-ray free-electron lasers (XFELs). We achieve submicron jets with speeds exceeding 160 m s
−1
, which allows for the use of megahertz XFEL repetition rates. By integrating an additional orifice, we implement a low consumption flow-focusing nozzle, which is validated by solving a hemoglobin structure. Also, aberration-free in operando X-ray microtomography is introduced to study efficient equivolumetric millisecond mixing in channels with 3D features integrated into the nozzle. Such devices can be printed in minutes by locally adjusting print resolution during fabrication. This technology has the potential to permit ultracompact devices and performance improvements through 3D flow optimization in all fields of microfluidic engineering.
There is a need for more robust sample delivery methods for serial crystallography. Here the authors present the design and characterization of ultracompact 3D microfluidic devices that can be printed, which require less sample, have a lower background signal and allow 3D mixing for time resolved experiments.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 82/62
/ Atom and Molecular Physics and Optics
/ Atom- och molekylfysik och optik (Här ingår: Kemisk fysik, kvantoptik)
/ Biology
/ Design
/ Fysik
/ Humanities and Social Sciences
/ Humans
/ Imaging
/ Lasers
/ Microfluidics - instrumentation
/ Mixers
/ Nozzles
/ NUCLEAR PHYSICS AND RADIATION PHYSICS
/ Orifices
/ Printing, Three-Dimensional - instrumentation
/ Science
