Microscope Technique Resolves Living Tissue Below 100 Nanometers

Texas A&M researchers combined two established methods onto a standard two-photon microscope to image fine structures deeper in living samples.

Updated on Nov. 9, 2026 in Physics

Microscope Technique Resolves Living Tissue Below 100 Nanometers

Texas A&M researchers developed a microscopy technique called 2PE-ISM-SOFI that produces images about five times sharper than conventional two-photon microscopy, resolving structures below 100 nanometers in living tissue. The findings were published in the Journal of Biomedical Optics.

Why it matters

Two-photon microscopy has typically required staying near a sample's surface to see fine detail, and the new approach aims to keep that depth-imaging capability while adding resolution. Application in fields from neuroscience to plant and animal biology will take time, and the team has further work to do to improve the technique.

The 2PE-ISM-SOFI method achieves lateral resolution down to about 75 nanometers, roughly a thousand times thinner than a human hair, while retaining two-photon microscopy's depth-imaging capability. The published results describe the technique's performance, but the source does not detail how it performs across different tissue types beyond the reported resolution figures.

The players

Texas A&M University

A public research university in College Station, Texas, that conducted the microscopy research described in the story.

Journal of Biomedical Optics

A peer-reviewed scientific journal that published the findings describing the new microscopy technique.

The details

The technique combines two-photon excited image scanning microscopy with super-resolution optical fluctuation imaging, with the researchers layering both methods onto a standard two-photon microscope. The approach builds on a 2024 study in PRX Life that laid groundwork for it, and it draws on super-resolution principles similar to the STED and PALM methods that earned the 2014 Nobel Prize in Chemistry.

2024: A PRX Life study laid groundwork for the approach.
2025: The Texas Legislature created the Texas Quantum Initiative.
August: Verhoef organized a panel on quantum sensing at the second Texas Quantum Summit in Dallas.
November 9, 2026: Texas A&M announced the findings.

The Big Picture

The 2PE-ISM-SOFI approach extends the super-resolution principles recognized by the 2014 Nobel Prize in Chemistry for STED and PALM microscopy into deep imaging of living tissue. It addresses a limitation of two-photon microscopy that has long restricted fine-detail imaging to the sample surface.

Researchers hope the technique will eventually help scientists see fine biological structures deeper within living samples than standard two-photon microscopes allow. Practical use in neuroscience and plant and animal biology will take time, as the team continues refining the method.

The takeaway

The new method shows that combining established microscopy techniques can push two-photon imaging past its surface-limited resolution. Its path from lab result to everyday research tool will depend on further refinement.