限制对热诱导超级晶体结构的影响
Claire Goldmann1, Wajdi Chaâbani1, Claire Hotton1
1Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides, Orsay, 91405, France.
Small (Weinheim an der Bergstrasse, Germany)
|June 30, 2023
概括
金三角形和银纳米棒的耗尽诱导的自我组装形成了超级晶体 (SC). 封闭和光束辐射影响SC的维度和稳定性,揭示了关键的NP-膜相互作用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 结合体科学 结合体科学
背景情况:
- 耗尽诱导的自我组装是通过形状分离纳米粒子 (NP) 的常见方法.
- 它在制造悬浮超级晶体 (SC) 的应用较少被探索,需要先进的表征.
- 等离子纳米粒子组件需要现场技术来理解它们的结构性质.
研究的目的:
- 通过耗尽诱导的自我组装来研究金三角 (AuNT) 和银纳米 (AgNR) 超晶体的形成和结构性质.
- 为了利用现场技术的组合来描述这些超级晶体.
- 了解限制和光束辐射对超晶体维度和稳定的影响.
主要方法:
- 金三角形和银纳米棒的耗尽诱导的自我组装.
- 小角度X射线散射 (SAXS) 和扫描电子显微镜 (SEM) 用于批量表征.
- 在现场液体细胞传输电子显微镜 (LCTEM) 用于在限制下实时成像.
主要成果:
- AuNTs和AgNRs分别形成了3D和2D六角格子.
- 在封闭状态下,NP窗口亲和度减少了SCs的维度,而不是散装.
- 射线辐射诱导的拆解,由脱吸动力学描述,突出了NP-膜相互作用.
结论:
- 封闭和NP膜相互作用显著影响超晶体的维度和稳定性.
- 耗尽诱导的自我组装提供了可重新配置的等离子超级网格.
- 在现场LCTEM对于理解纳米粒子超级晶体的动态结构性质至关重要.
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