Visualizing Millisecond Atomic Dynamics of Nanocrystals in Liquid
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866918409271246848 |
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| author | Kang, Sungsu Rhee, Jinho Kim, Joodeok Oaks-Leaf, Sam Kim, Minwoo Yang, Shengsong Liu, Chang Kim, Dongsu Kim, Sungin Wu, Binyu Lee, Won Bo Limmer, David T. Alivisatos, A. Paul Park, Peter Ercius Jungwon |
| author_facet | Kang, Sungsu Rhee, Jinho Kim, Joodeok Oaks-Leaf, Sam Kim, Minwoo Yang, Shengsong Liu, Chang Kim, Dongsu Kim, Sungin Wu, Binyu Lee, Won Bo Limmer, David T. Alivisatos, A. Paul Park, Peter Ercius Jungwon |
| contents | Atomic structures of nanomaterials are inherently dynamic, continuously reshaped through interactions with chemical species and external stimuli. Such dynamics are further amplified as the size and dimensionality of nanomaterials are reduced. Despite advances in analytical methods, it remains challenging to capture structural dynamics of nanomaterials in reactive environments with both atomic spatial resolution and commensurate temporal resolution. Here, we directly visualize atomic-scale dynamics of gold (Au) nanocrystals in reactive liquid environments with millisecond-speed liquid cell electron microscopy (EM) and deep-learning denoising. We uncover reversible fluctuations in local crystallinity of Au nanocrystals dependent on the surrounding chemical environment. These transient fluctuations, driven by interactions at nanocrystal-liquid interfaces, critically influence dissolution kinetics and grain boundary relaxation. By overcoming the spatiotemporal limitations in conventional liquid cell EM, our findings provide insights into how transient nanoscale structures dictate the stability and reactivity of nanomaterials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_24776 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Visualizing Millisecond Atomic Dynamics of Nanocrystals in Liquid Kang, Sungsu Rhee, Jinho Kim, Joodeok Oaks-Leaf, Sam Kim, Minwoo Yang, Shengsong Liu, Chang Kim, Dongsu Kim, Sungin Wu, Binyu Lee, Won Bo Limmer, David T. Alivisatos, A. Paul Park, Peter Ercius Jungwon Materials Science Atomic structures of nanomaterials are inherently dynamic, continuously reshaped through interactions with chemical species and external stimuli. Such dynamics are further amplified as the size and dimensionality of nanomaterials are reduced. Despite advances in analytical methods, it remains challenging to capture structural dynamics of nanomaterials in reactive environments with both atomic spatial resolution and commensurate temporal resolution. Here, we directly visualize atomic-scale dynamics of gold (Au) nanocrystals in reactive liquid environments with millisecond-speed liquid cell electron microscopy (EM) and deep-learning denoising. We uncover reversible fluctuations in local crystallinity of Au nanocrystals dependent on the surrounding chemical environment. These transient fluctuations, driven by interactions at nanocrystal-liquid interfaces, critically influence dissolution kinetics and grain boundary relaxation. By overcoming the spatiotemporal limitations in conventional liquid cell EM, our findings provide insights into how transient nanoscale structures dictate the stability and reactivity of nanomaterials. |
| title | Visualizing Millisecond Atomic Dynamics of Nanocrystals in Liquid |
| topic | Materials Science |
| url | https://arxiv.org/abs/2603.24776 |