Dynamic Characterization Group

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Optimization of the properties and performance of materials is a continual challenge, and necessitates control of microstructural evolution during thermo-mechanical processing. Microstructure controls properties in various industries, such as electrical, defense and even the sports industry (tennis rackets, golf clubs). The properties of these materials are dictated by the distribution and organization of grain boundaries, dislocations and other defects.

To gain a greater understanding of these processing steps, researchers often turn to in situ TEM. This technique provides insight into many aspects of mechanisms that are otherwise unclear in static experiments. Additionally, ultrafast in-situ TEM (the DTEM) can potentially fill in gaps in the current understanding of various structural, chemical, electronic and magnetic properties in a myriad of materials. These capabilities allow for vast improvements of in-situ TEM studies limited by video rate. The results of these time resolved experiments are critical to the fields of grain boundary engineering, catalysts' role in fuel cells for energy, and electronics, such as blue light emitting diodes.


Dr. Mitra Taheri

Hoeganaes Associate Professor
LeBow 441
(215) 895-6618

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