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    When exfoliating materials such as transition metal dichalcogenides (e.g. WSe2), impurities can stick to the substrate and arrange into quite fascinating shapes. Here, it seems like some leftover polymer used for the “scotch tape” exfoliation of the material formed this beautifully circular shape (magnified 20x) against its surrounding.
When exfoliating materials such as transition metal dichalcogenides (e.g. WSe2), impurities can stick to the substrate and arrange into quite fascinating shapes. Here, it seems like some leftover polymer used for the “scotch tape” exfoliation of the material formed this beautifully circular shape (magnified 20x) against its surrounding.

 

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Damien Bérubé
CCE

When exfoliating materials such as transition metal dichalcogenides (e.g. WSe2), impurities can stick to the substrate and arrange into quite fascinating shapes. Here, it seems like some leftover polymer used for the “scotch tape” exfoliation of the material formed this beautifully circular shape (magnified 20x) against its surrounding.

dberube@caltech.edu

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