Melting, bubble-like expansion and explosion of superheated plasmonic nanoparticles

arXiv - PHYS - Atomic and Molecular Clusters Pub Date : 2023-09-01 DOI:arxiv-2309.00433

Simon Dold, Thomas Reichenbach, Alessandro Colombo, Jakob Jordan, Ingo Barke, Patrick Behrens, Nils Bernhardt, Jonathan Correa, Stefan Düsterer, Benjamin Erk, Thomas Fennel, Linos Hecht, Andrea Heilrath, Robert Irsig, Norman Iwe, Patrice Kolb, Björn Kruse, Bruno Langbehn, Bastian Manschwetus, Philipp Marienhagen, Franklin Martinez, Karl-Heinz Meiwes Broer, Kevin Oldenburg, Christopher Passow, Christian Peltz, Mario Sauppe, Fabian Seel, Rico Mayro P. Tanyag, Rolf Treusch, Anatoli Ulmer, Saida Walz, Michael Moseler, Thomas Möller, Daniela Rupp, Bernd von Issendorff

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Abstract

We report on time-resolved coherent diffraction imaging of gas-phase silver nanoparticles, strongly heated via their plasmon resonance. The x-ray diffraction images reveal a broad range of phenomena for different excitation strengths, from simple melting over strong cavitation to explosive disintegration. Molecular dynamics simulations fully reproduce this behavior and show that the heating induces rather similar trajectories through the phase diagram in all cases, with the very different outcomes being due only to whether and where the stability limit of the metastable superheated liquid is crossed.

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过热等离子体纳米粒子的熔化、气泡状膨胀和爆炸

我们报道了气相银粒子的时间分辨相干衍射成像，通过它们的等离子体共振强烈加热。x射线衍射图像揭示了不同激发强度的广泛现象，从简单的熔化到强空化到爆炸解体。分子动力学模拟完全再现了这一行为，并表明加热在所有情况下通过相图诱导相当相似的轨迹，而非常不同的结果仅仅是由于亚稳过热液体的稳定性极限是否和在哪里被跨越。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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arXiv - PHYS - Atomic and Molecular Clusters

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