Mass Separation by Metamaterials.
Mass Separation by Metamaterials.
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DOI：
10.1038/srep21971
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发表时间：
2016-02-25
影响因子：
4.6
通讯作者：
Maldovan M
中科院分区：
文献类型：
--
作者：
Restrepo-Flórez JM;Maldovan M
在化学和生物分子科学的各种物理过程中，能够操纵质量流动是至关重要的。例如，需要精确控制质量扩散的分离和催化系统在化学品的制造、半导体的晶体生长、生物溶质或化学品的废物回收以及人造肾脏的生产中至关重要。坐标变换和超材料是实现分子扩散精确操纵的有力手段。在这里，我们介绍了一种基于超材料实现质量分离的新方法，该方法可以通过掩盖一种化合物而浓缩另一种来对化学和生物分子物种进行分类。提出了一种利用均匀各向同性材料实现这种超材料的设计策略。我们提出了一个实际案例，其中氧气和氮气的混合物是使用一种覆盖氮气并浓缩氧气的超材料来操纵的。这项工作为超材料器件在生物物理和化学系统中实现分子质量分离奠定了基础。
Being able to manipulate mass flow is critically important in a variety of physical processes in chemical and biomolecular science. For example, separation and catalytic systems, which requires precise control of mass diffusion, are crucial in the manufacturing of chemicals, crystal growth of semiconductors, waste recovery of biological solutes or chemicals, and production of artificial kidneys. Coordinate transformations and metamaterials are powerful methods to achieve precise manipulation of molecular diffusion. Here, we introduce a novel approach to obtain mass separation based on metamaterials that can sort chemical and biomolecular species by cloaking one compound while concentrating the other. A design strategy to realize such metamaterial using homogeneous isotropic materials is proposed. We present a practical case where a mixture of oxygen and nitrogen is manipulated using a metamaterial that cloaks nitrogen and concentrates oxygen. This work lays the foundation for molecular mass separation in biophysical and chemical systems through metamaterial devices.