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Related Experiment Video

Updated: Apr 21, 2026

Visualizing Diffusional Dynamics of Gold Nanorods on Cell Membrane using Single Nanoparticle Darkfield Microscopy

Visualizing Diffusional Dynamics of Gold Nanorods on Cell Membrane using Single Nanoparticle Darkfield Microscopy

Published on: March 5, 2021

Atomic diffusion within individual gold nanocrystal.

Gang Xiong¹, Jesse N Clark¹, Chris Nicklin²

¹London Centre for Nanotechnology, University College London, London WC1H 0AH, UK.

Scientific Reports

|October 25, 2014

Summary

This summary is machine-generated.

Copper diffusion into gold nanocrystals reveals dislocation loops and alloy channels. This study uses X-ray diffraction imaging to understand atomic behavior in nanomaterials.

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Area of Science:

Materials Science
Nanotechnology
Solid-state Physics

Background:

Nanoparticles possess unique properties due to high surface energy and instability.
Miniaturization of electronics and development of new materials/catalysts drive nanoparticle research.
Understanding diffusion dynamics in single nanoparticles is crucial for advanced applications.

Purpose of the Study:

To investigate the evolution of diffusion within a single nanoparticle.
To observe atomic-level processes during copper diffusion into a gold nanocrystal.
To explore the role of Bragg Coherent X-ray Diffraction Imaging in nanomaterial analysis.

Main Methods:

Measuring spatial and temporal variations of diffracted coherent X-ray intensity.
Utilizing copper diffusion into a gold nanocrystal as a model system.
Employing Bragg Coherent X-ray Diffraction Imaging (BCXDI).

Main Results:

Detection of dislocation loops formed by inserted atomic layers.
Observation of Au-Cu alloy channels penetrating the nanocrystal.
Identification of differential diffusion rates along various crystallographic directions.

Conclusions:

Bragg Coherent X-ray Diffraction Imaging is a powerful tool for 3D atomic behavior analysis in nanomaterials.
Understanding diffusion mechanisms is key to controlling nanomaterial properties.
Future advancements in X-ray sources will enhance in-situ nanomaterial process studies.