Large-scale self-assembled nanophotonic scintillators for X-ray imaging

Area of Science:

• Materials Science
• Optics
• Nanotechnology

Background:

• Scintillators are crucial for X-ray imaging, converting X-ray energy into visible light.
• Scalable manufacturing of high-quality scintillators is essential for widespread adoption.
• Nanophotonic scintillators offer potential improvements in light yield, decay time, and directionality but face fabrication challenges.

Purpose of the Study:

• To present a scalable fabrication method for large-area nanophotonic scintillators.
• To investigate the impact of nanofabrication disorder on imaging performance.
• To demonstrate the practical application of these enhanced scintillators in X-ray imaging.

Main Methods:

• Utilized self-assembly of chalcogenide glass photonic crystals for scalable fabrication.
• Produced nanophotonic scintillators over wafer-scale areas.
• Analyzed surface nanofabrication disorder and its effect on imaging.

Main Results:

• Achieved a six-fold enhancement in light yield compared to unpatterned scintillators.
• Demonstrated that surface disorder impacts imaging performance but can be managed.
• Successfully applied nanophotonic scintillators to X-ray imaging of diverse specimens.

Conclusions:

• The self-assembly method provides a scalable route to high-performance nanophotonic scintillators.
• Understanding and controlling nanofabrication disorder is key to optimizing imaging resolution and scintillation enhancement.
• This work paves the way for industrial implementation of advanced nanophotonic scintillators in X-ray imaging.