Spectrophotometry articles from across Nature Portfolio

A miniaturized on-chip spectral imager based on III-nitride cascaded photodiodes achieves 0.62 nm accuracy and sub-10 ns response, extending spectral imaging into the ultraviolet regime.

The study demonstrates a cost-effective hyperspectral tomography system for continuous monitoring of ozone and its precursors, using drones and light-emitting diodes. It provides high-resolution, all-day data, aiding in understanding pollution dynamics and identifying pollution sources.

This Primer discusses key principles and experiments in quantitative ultraviolet–visible spectroelectrochemistry experiments with a focus on data-rich set-ups. The authors demonstrate the various data outputs of these experiments using worked examples and discuss the practical applications of quantitative ultraviolet–visible spectroelectrochemistry in the study of energy materials.

Radiative cooling is an emerging technology for cooling with reduced energy consumption. Here the authors present photoluminescent composites that combine subambient cooling with aesthetic colour, hydrophobicity and durability.

A miniaturized on-chip spectral imager based on III-nitride cascaded photodiodes achieves 0.62 nm accuracy and sub-10 ns response, extending spectral imaging into the ultraviolet regime.

Overcoming the trade-off between the aesthetic requirements and cooling efficiency of passive radiative cooling materials is challenging. Now, composites that use the photoluminescence of rare-earth-doped phosphors to achieve efficient sub-ambient cooling and vibrant colours are demonstrated.

Open-shell organic molecules with properties that can be modulated by external stimuli are of interest for spintronics applications. Now, an overcrowded alkene with open-shell tetraradical character has been synthesized in which the interaction between the π-conjugated subunits depends on the charge and spin state.

Artist’s impression (not to scale) showing a fanciful concept of how a glass microsphere produces a photonic nanojet that significantly improves resolution when examining microchip wafers with a microscope.