Researchers Extended MAXWELL Microscopy Depth
The improved technique utilized near-infrared light to achieve deeper imaging in biological tissues.
Updated on Sept. 19, 2026 in Physics
Scientists have extended the reach of MAXWELL microscopy by incorporating near-infrared fluorescence detection. This advancement allows for clearer imaging at significantly greater depths within biological specimens.
Why it matters
Traditional light-sheet microscopy is limited by optical scattering and absorption in tissue, which restricts how deeply researchers can visualize internal structures. This development addresses these fundamental barriers to enable more detailed deep-tissue observation.
The researchers achieved an 800 μm imaging depth using near-infrared detection, a 2.7-fold increase compared to the 300 μm limit found in visible spectrum detection. Phantom measurements confirmed reduced lateral signal broadening in the new channel.
The players
MAXWELL
This acronym stands for Microscopy by Achromatic X-rays With Emission of Laminar Light.
The details
By using X-rays as a deeply penetrating excitation source and leveraging near-infrared light, the method minimizes tissue scattering during the imaging process. Experiments on mouse brain vasculature showed that while near-infrared signals attenuated more steeply with depth, they provided superior penetration over visible light methods.
Timeline
September 19, 2026: The research findings were published.
The Big Picture
This development represents a shift for light-sheet microscopy, which is a standard tool for observing 3D biological structures. By integrating near-infrared fluorescence, the study provides a path to overcome the scattering barriers that currently restrict resolution in deep tissue.
This advancement could eventually lead to higher-resolution diagnostic imaging tools that penetrate deeper into human tissue without the need for invasive procedures. Such improvements might shorten timelines for developing new medical treatments by allowing for better observation of internal physiological responses.
The takeaway
The move toward near-infrared fluorescence detection demonstrates that even established imaging techniques can be significantly improved by leveraging specific spectral ranges. Researchers looking to replicate these results should focus on the use of rare-earth ceramic phosphors, such as Y2O3:Yb, Er, for optimal signal detection.
Further reading
For more information on current developments in this field, visit the Physics section.
Source note: This article includes information reported by Nature.
