Back to today’s briefing

Story perspectives

Revolutionary Mini Imager Transforms Portable Spectral Analysis

10/16/2025

36 8

Summary

Story summary

The miniaturized on-chip spectral imager enables measurements from 250 nm to 365 nm.
It achieves a peak wavelength accuracy of 0.62 nm and a response time under 10 nanoseconds.
It uses a vertically cascaded n–p–n photodiode array, featuring an AlGaN-based n–p diode and a GaN-based p–n diode.
It distinguishes four organic thin-film materials in a single shot.
This innovation paves the way for low-cost, portable spectral imaging solutions.

1 of 1

Story summary

The miniaturized on-chip spectral imager enables measurements from 250 nm to 365 nm.
It achieves a peak wavelength accuracy of 0.62 nm and a response time under 10 nanoseconds.
It uses a vertically cascaded n–p–n photodiode array, featuring an AlGaN-based n–p diode and a GaN-based p–n diode.
It distinguishes four organic thin-film materials in a single shot.
This innovation paves the way for low-cost, portable spectral imaging solutions.