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Researchers from the University of Stuttgart have developed a microscale spectrometer that can be fabricated through femtosecond direct laser writing. The angle-insensitive 3D-printed miniature spectrometer has a direct separated spatial-spectral response, and a volume of less than 100 × 100 × 300 μm3.
According to the researchers’ paper, the team could fabricate the spectrometer directly on a miniature image sensor as the tip of a distal chip endoscope, which would allow examination of previously inaccessible regions of the body with extremely high bending radii. Additionally, the technology may find applications in hyperspectral imaging where it could be used as a unit cell, or macro pixel. There, the…READ MORE