CRITICAL-ANGLE TRANSMISSION (CAT) GRATING
Scanning electron micrograph of the hierarchical structure of a large-area CAT grating membrane fabricated from a silicon-on-insulator wafer.
Shaping of thin-foil x-ray optics
X-ray optics for space-based applications need to be wafer-thin AND maintain accurate figure.
Home of the MIT Nanoruler
The Nanoruler is the first tool to implement the patented patterning technique called Scanning Beam Interference Lithography (SBIL). (© Volker Steger, Science Photo Library
The Chandra X-Ray Observatory
The SNL fabricated hundreds of transmission gratings for the High Energy Transmission Grating Spectrometer on board of Chandra, launched in 1999, and still operating. (Image credit: NASA/CXC/SAO)
X-ray optics shape correction using ion implantation
Ion implantation of thin-foil x-ray mirrors has the potential to correct figure at the sub-arcsec level. (© Ralf Heilmann)
July 30, 2021: Successful flight of MaGIXS sounding rocket with variable-period reflection grating!
June 2021: New SNL video
March 2021: SNL featured in NASA Science Technology Highlights
November 2020: Congratulations to Dr. Song to his successful Ph.D. defense!
July 2020: Congratulations to Prof. Chalifoux to his new position at the University of Arizona!
Aug 2017: Arcus
, a NASA MIDEX mission proposal based on CAT gratings, silicon-pore optics, and x-ray CCDs, has been selected for a Phase A concept study
Feb 2016: Record high soft x-ray grating spectrometer resolving power > 10,000 demonstrated!