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Updated: May 20, 2026

Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles
Published on: October 16, 2017
Direct visualization of symmetry breaking during janus nanoparticle formation
Gabriel Loget1, Tung C Lee, Richard W Taylor
1ISM, UMR, Université de Bordeaux, Pessac, France.
Abstract:
The straight-forward synthesis of Janus nanoparticles composed of Ag and AgBr is reported. For their formation, cucurbit[n]uril (CB)-stabilized AgBr nanoparticles are first generated in water by precipitation. Subsequent irradiation with an electron beam transforms a fraction of each AgBr nanoparticle into Ag(0) , leading to well-defined Janus particles, stabilized by the binding of CB to the surface of both AgBr and Ag(0) . With the silver ion reduction being triggered by the electron beam, the progress of the transformation can be directly monitored with a transmission electron microscope.
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