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Home>Press>研究:映射晶体形状可以快速跟踪二维材料:专家呼吁全球共同努力清晰障碍批量生产

An array of crystal shapes of 2D transition metal dichalcogenides as imaged with a scanning electron microscope. (Image courtesy of MSNE/Rice University)
An array of crystal shapes of 2D transition metal dichalcogenides as imaged with a scanning electron microscope. (Image courtesy of MSNE/Rice University)

抽象:
Materials scientists at Rice University and the University of Pennsylvania are calling for a collective, global effort to fast-track the mass production of 2D materials like graphene and molybdenum disulfide.

研究:映射晶体形状可以快速跟踪二维材料:专家呼吁全球共同努力清晰障碍批量生产

Houston, TX | Posted on July 27th, 2020

在材料今天在网上公布的透视文章,杂志主编,首席娄军和他的同事做的情况下,有重点,集体努力,以解决可能清除大规模批量生产的二维材料,对研究的挑战。



卢和其他水稻材料科学家明汤, Jing Zhang and Fan Wang joined Penn's Vivek Shenoy in describing the potential transformation in 2D materials technology that could result from a systematic, communitywide effort to map the shapes of the 2D crystals that are being grown in labs worldwide via a process known as chemical vapor deposition (CVD).



"Like snowflakes in nature, 2D crystals exhibit a rich variety of morphologies under different growth conditions," they wrote.



Mapping these unique crystal patterns and compiling the maps in a global database, alongside the recipes for creating each pattern, could unlock a wealth of information "for understanding, diagnosing and controlling the CVD process and environment for 2D material growth," the researchers wrote.



CVD是用于创建薄膜,包括在半导体工业中具有重要商业价值的材料中常用的工艺。在典型的CVD反应,材料的平片被称为衬底放置在反应室中与气体流过该腔室的,因为它们反应并形成在衬底顶上形成固体膜这样的方式。



One goal of the field is developing computer software that can accurately predict the properties of a thin film that will result from the mixing of specific reactant gases under specific conditions. Creating such models is complicated by both an incomplete understanding of the physical and chemical processes that take place during CVD and by the existence of dozens of CVD reactor formats.



编目通过CVD实验产生可提供的材料科学家提供有关其合成的重要信息,在大致相同的方式,矿物学家检索有关地球的基于自然发生的晶体结构的研究历史有价值的线索晶体的形状,娄和他的同事建议。



“把美丽的雪花作为一个例子,”作者写道。“A或许令人惊讶的事实,以许多是雪晶可以呈现许多不同类别的形状,这取决于它们所形成的气氛的温度和过饱和的水。”



日本科学家中谷宇吉郎,通过自然界和实验室雪花的广泛意见,开发被称为矢图来帮助破译雪花信息的身影。通过检查在一个雪花形状,看见其中这些形状位于矢的图上,科学家可确定产生的雪花,其中屋诗意称为精确大气条件“从天空中的字母”。



由矢的工作的启发,娄和同事创建了一个矢状的已经通过CVD被生产并演示了如何它与其他形态的图可以被用来推断线索约等气体流速的过程变量和产生加热温度2D晶体图案图每个图案。



Thanks to advances in real-time imaging and in automated systems that can produce large datasets of crystal structures, the authors said there is "real potential for morphology diagram development to become a common practice and serve as a cornerstone of crystal growth."



Lou, Tang, Zhang and Wang are members of Rice's Department of Materials Science and NanoEngineering. Lou is a professor and associate department chair. Tang is an assistant professor. Zhang is a postdoctoral research associate, and Fang is a graduate student. Shenoy is Penn's Eduardo D. Glandt President's Distinguished Professor of Materials Science and Engineering.



这项研究是由韦尔奇基金会(C-1716),美国国家科学基金会(IIP-1539999)和能源部(DE-SC0019111)的支持。

####

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The DOI of the Materials Today paper is: 10.1016/j.mattod.2020.06.012

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