首页> 外文期刊>Nature >Square ice in a graphene sandwich
【24h】

Square ice in a graphene sandwich

机译:石墨烯三明治中的方冰

获取原文
获取原文并翻译 | 示例
           

摘要

Crystals of ice consist of hydrogen- bonded water molecules in a tetra- hedral network that has hexagonal symmetry. It is this symmetry that gives rise to the characteristic shapes of snowflakes and the intricate patterns of ice that form on the surfaces of puddles when they freeze. At high pressures, such as 10,000 atmospheres (1 gigapascal; GPa), the underlying tetrahedral geometry of ambient ice is mostly preserved, although the detailed structure undergoes several transformations.But on page 443 of this issue, Algara-Siller et al. describe a high-resolution electron microscopy study of water molecules at high pressure between sheets of the material graphene, and report that the molecules surprisingly adopt a simple, cubic-like symmetry - a bit like scaffolding on the outside of a building, or, more accurately, between two buildings.
机译:冰晶由具有六边形对称性的四面体网络中的氢键水分子组成。正是这种对称性导致了雪花的特征形状和水坑结冰时在水坑表面形成的复杂冰纹。在高压下,例如10,000个大气压(1吉帕斯卡; GPa),虽然详细结构经历了多次转换,但基本保留了周围冰的底层四面体几何形状。但是在本期第443页上,Algara-Siller等人。描述了高压石墨烯材料之间的水分子的高分辨率电子显微镜研究,并报告说这些分子出人意料地采用了简单的立方对称性,有点像建筑物外部的脚手架,或者更多准确地说,是在两座建筑物之间。

著录项

  • 来源
    《Nature》 |2015年第7544期|417-418|共2页
  • 作者

    ALAN K. SOPER;

  • 作者单位

    ISIS Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号