利用溶剂干燥技术制备纳米粒子自组装原位TEM成像的微腔

2015 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS) Pub Date : 2015-03-02 DOI:10.1109/MEMSYS.2015.7050872

Won Chul Lee, Jungwon Park, D. Weitz, S. Takeuchi, A. Alivisatos

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引用次数: 1

摘要

这项工作提出了一个微制造的液体样品室，用于由液体蒸发驱动的纳米级过程的实时透射电子显微镜(TEM)。以前用于TEM的液微室将液体样品保存在全封闭(真空密闭)的微纳米尺度结构中，因此无法研究蒸发驱动的纳米尺度现象。在TEM成像过程中，为了产生溶剂干燥，本研究使用了键合中的泄漏/失效和电子束诱导加热，并捕获了实时纳米级电影，可视化了二维纳米颗粒阵列自组装过程中的关键步骤，包括两步结晶过程。

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Microfabricated liquid chamber utilizing solvent-drying for in-situ TEM imaging of nanoparticle self-assembly

This work presents a microfabricated liquid-sample chamber for real-time TEM (Transmission Electron Microscopy) of nanoscale processes driven by liquid evaporation. Previous liquid-microchambers for TEM hold liquid samples in fully-closed (vacuum-tight) micro/nano-scale structures, thus evaporation-driven nanoscale phenomena couldn't be studied. The present work uses intended leakage/failure in bonding and e-beam induced heating in order to generate solvent-drying during TEM imaging, and the captured real-time nanometer-scale movies visualize critical steps in the self-assembly process of 2D nanoparticle arrays including the two-step crystallization process.

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2015 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS)

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