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university of california-berkeley

2 ARTICLES PUBLISHED IN JoVE

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Chemistry

Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals
Karthish Manthiram *1,4, Brandon J. Beberwyck *2,4, Dmitri V. Talapin 5,6, A. Paul Alivisatos 2,3,4
1Department of Chemical Engineering, UC Berkeley, 2Department of Materials Science and Engineering, UC Berkeley, 3Department of Chemistry, UC Berkeley, 4Materials Sciences Division, Lawrence Berkeley National Laboratory, 5Department of Chemistry, University of Chicago, 6Center for Nanoscale Materials, Argonne National Laboratory

A protocol for the seeded synthesis of rod-shaped and tetrapod-shaped multicomponent nanostructures consisting of CdS and CdSe is presented.

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Chemistry

Using Graphene Liquid Cell Transmission Electron Microscopy to Study in Situ Nanocrystal Etching
Matthew R. Hauwiller 1, Justin C. Ondry 1, A. Paul Alivisatos 1,2,3,4
1Department of Chemistry, University of California-Berkeley, 2Department of Material Science and Engineering, University of California-Berkeley, 3Kavli Energy NanoScience Institute, 4Materials Sciences Division, Lawrence Berkeley National Laboratory

Graphene liquid cell electron microscopy can be used to observe nanocrystal dynamics in a liquid environment with greater spatial resolution than other liquid cell electron microscopy techniques. Etching premade nanocrystals and following their shape using graphene liquid cell Transmission Electron Microscopy can yield important mechanistic information about nanoparticle transformations.

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