Optical Fiber Light Feedthrough

Hummingbird Scientific’s in-situ Gas TEM sample holder, equipped with an optical fiber light feedthrough, enables photosensitive experiments in a controlled gaseous environment inside the TEM. This added capability allows researchers to illuminate the sample during imaging and directly observe how light affects material behavior, such as nanoparticle growth, degradation, and the formation or dissipation of reaction intermediates. These real-time insights are essential for designing more efficient and robust photocatalysts.

Photocatalytic materials, plasmonic metals, and semiconductor heterostructures are photoactive catalysts that interact with gases during light-driven reactions. By combining high-resolution imaging with precise control of gas composition, temperature, and illumination, the in-situ Gas TEM sample holder facilitates direct observation of active site evolution under realistic reaction conditions.