High-tilt in situ heating holder and thermally driven evolution of a Pd@Pt core–shell nanoparticle (IMAGE)
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(a) Overall view of the custom-designed high-tilt in situ heating holder. (b) Close-up view of the heating region at the holder tip. (c) Heating filament on the MEMS chip. (d) Ronchigram acquired at a tilt angle of 78°, demonstrating high-angle imaging capability. (e) 2D morphological evolution of a Pd@Pt core–shell nanoparticle during continuous heating from room temperature to 900 °C, showing shell shrinkage, interfacial blurring and progressive alloying. Credit: Zhang et al. / Peking University.
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