X-ray nanotomography reveals formation of single diamonds by block copolymer self-assembly
X-ray nanotomography reveals formation of single diamonds by block copolymer self-assembly
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发表时间：
2023-04
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通讯作者：
Kenza Djeghdi;D. Karpov;N. Abdollahi;Karolina Godlewska;M. Holler;C. Donnelly;Takeshi Yuasa;Hiroaki Sai;Ulrich B Wiesner;U. Steiner;B. Wilts;Michimasa Musya;S. Fukami;H. Ohno;Ana Diaz;J. Llandro;I. Gunkel
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作者：
Kenza Djeghdi;D. Karpov;N. Abdollahi;Karolina Godlewska;M. Holler;C. Donnelly;Takeshi Yuasa;Hiroaki Sai;Ulrich B Wiesner;U. Steiner;B. Wilts;Michimasa Musya;S. Fukami;H. Ohno;Ana Diaz;J. Llandro;I. Gunkel
嵌段共聚物被认为是创造具有独特性能的纳米结构材料的有价值的平台。通过嵌段共聚物自组装形成的形态可以转移到各种无机材料中，从而实现包括能量存储和超材料在内的应用。然而，大量的底层，通常是复杂的纳米结构的成像仍然是一个挑战，限制了材料开发的进展。利用X射线纳米断层扫描的最新进展，我们非侵入性成像异常大体积的纳米结构的软材料在高分辨率，揭示了一个单一的金刚石形态的三块体的复合网络。这种形态在自然界中普遍存在，但迄今为止在嵌段共聚物中仍然难以捉摸，尽管它有可能产生具有大光子带隙的材料。这一发现是通过对大量自组装金刚石网络中的扭曲进行精确分析而实现的，这些扭曲很难使用传统的表征工具进行明确评估。我们预计，高分辨率的X射线nanotomography，它允许更大的样品体积比基于电子的断层扫描成像，将成为一个强大的工具，用于复杂的纳米结构的定量分析和结构，如三嵌段三元共聚物定向单金刚石将使先进的多组分复合材料的产生与迄今为止未知的属性配置文件。
Block copolymers are recognised as a valuable platform for creating nanostructured materials with unique properties. Morphologies formed by block copolymer self-assembly can be transferred into a wide range of inorganic materials, enabling applications including energy storage and metamaterials. However, imaging of the underlying, often complex, nanostructures in large volumes has remained a challenge, limiting progress in materials development. Taking advantage of recent advances in X-ray nanotomography, we non-invasively imaged exceptionally large volumes of nanostructured soft materials at high resolution, revealing a single diamond morphology in a triblock terpolymer composite network. This morphology, which is ubiquitous in nature, has so far remained elusive in block copolymers, despite its potential to create materials with large photonic bandgaps. The discovery was made possible by the precise analysis of distortions in a large volume of the self-assembled diamond network, which are difficult to unambiguously assess using traditional characterisation tools. We anticipate that high-resolution X-ray nanotomography, which allows imaging of much larger sample volumes than electron-based tomography, will become a powerful tool for the quantitative analysis of complex nanostructures and that structures such as the triblock terpolymer-directed single diamond will enable the generation of advanced multicomponent composites with hitherto unknown property profiles.