Micro-liquid enclosure array and its semi-automated assembling system for x-ray free-electron laser diffractive...

Area of Science:

• Biophysics
• Materials Science
• Nanotechnology

Background:

• Coherent diffractive imaging (CDI) is a powerful technique for nanoscale imaging.
• Imaging samples in solution presents challenges due to environmental control and sample delivery.
• X-ray free-electron lasers (XFELs) offer high brightness for probing nanoscale structures.

Purpose of the Study:

• To develop a novel sample holder for in-situ XFEL-based CDI of solution samples.
• To enable high-throughput and precise imaging of nanostructures in their native liquid environment.
• To improve the efficiency and accuracy of XFEL experiments for studying solution-based nanomaterials.

Main Methods:

• Development of micro-liquid enclosure arrays (MLEAs) with hundreds of isolated sample chambers.
• Implementation of a semi-automated system for precise and efficient assembly of MLEAs with solution samples.
• Conducting XFEL-based CDI experiments using MLEAs to image self-assembled gold nanoparticles.

Main Results:

• Achieved a single-particle hit rate of 31% in XFEL-based CDI experiments, approaching the theoretical limit.
• Demonstrated the capability of MLEAs to maintain controlled solution conditions during XFEL exposure.
• Successfully imaged in-solution structures of self-assembled gold nanoparticles.

Conclusions:

• Micro-liquid enclosure arrays (MLEAs) are effective for XFEL-based CDI of solution samples.
• MLEAs facilitate efficient, high-precision measurements of nanostructures in liquid environments.
• This technology advances the study of solution-based nanostructures and their dynamics.