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Ana Maria Rey wears dark safety glasses as she stands behind a table covered with optics equipment in the lab.

Ana Maria Rey in the lab

Ana Maria Rey in the lab. Her work contributed to the most accurate atomic clock ever developed. 

Credit: R. Jacobson/NIST
A hand in a purple glove turns a metal dial on a plate holding tiny vials of purple liquid.

Optical Coherence Tomography

Researchers used a noninvasive and label-free method called optical coherence tomography to assess the live cells in the 3D scaffold system. OCT is an imaging technique that uses light waves to take cross sectional images of a sample.

Credit: R. Wilson/NIST

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