title: System for in situ UV-visible illumination of environmental transmission electron microscopy samples.
abstract: A system for illuminating a sample in situ with visible and ultraviolet light inside a transmission electron microscope was devised to study photocatalysts. There are many mechanical and optical factors that must be considered when designing and building such a system. Some of the restrictions posed by the electron microscope column are significant, and care must be taken not to degrade the microscope's electron-optical performance or to unduly restrict the other capabilities of the microscope. We discuss the nature of the design considerations, as well as the practical implementation and characterization of a solution. The system that has been added to an environmental transmission electron microscope includes a high brightness broadband light source with optical filters, a fiber to guide the light to the sample, and a mechanism for precisely aligning the fiber tip.
authors: School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287-6106, USA.
authors: Benjamin K
authors: BK
authors: Miller
authors: Peter A
authors: PA
authors: Crozier