Using In Situ TEM to explore structural transformations in 2D material CoSe2

In this DENSsolutions Wildfire webinar we welcome Dnyaneshwar Gavhane from the Debye Institute For Nanomaterials Science in Utrecht, the Netherlands.

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Abstract

Thermally induced structural transformation of 2D materials opens unique avenues for generating 2D materials by physical methods. Imaging these transitions in real-time provides insight into synthesis routes and property tuning.

During this webinar, Dnyaneshwar Gavhane will present how he used in-situ transmission electron microscopy (TEM) and our Wildfire system to follow thermally induced structural transformations in layered CoSe₂. He will show the observation of three transformation processes: orthorhombic to cubic-CoSe₂, cubic-CoSe₂ to hexagonal-CoSe and hexagonal to tetragonal-CoSe.

Dnyaneshwar will also describe how the 2D CoSe₂ layers were prepared though the exfoliation of bulk CoSe₂ via ultrasonication. Moreover, he will show how a stepwise increment in the temperature was used to heat CoSe₂ layers inside the TEM to observe transformation. These findings provide nanoscopic insights into the transformation processes of 2D CoSe₂ which can be used to generate these intriguing 2D materials and to tune their properties by modifying their structures for electro-catalytic and electronic applications.

We invite you to join this webinar to explore the structural transformations in this 2D material and learn how our Wildfire system can take your research to the next level.