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kaka9897
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The word ¡°sub-nanometer¡± is increasingly used recently. However, the size strictly confined within 1 nm is difficult to determine, since there might be errors in most of the size conventional characterization tools, and the featured size might not be even in the overall structures, especially at this extremely small scale. Moreover, whether there is or should be a critical size level to differentiate sub-nanometric material £¨SNMs£© from conventional nanomaterials is not clear, in spite of the fact that it is well-accepted that the size of nanomaterials would certainly influence their properties. The size scale of sub-nanometer bridges the molecular level and the conventional nanoscale, and an increasing number of novel properties are being progressively researched. Specially specifying this size scale might help to attract wide interest on this special topic. We consider the materials as the so-called SNMs when two aspects are met: 1) the size of materials are confined at the level of a single-unit cell of crystals or molecular level; 2) some unique (size-related) properties comparing to nanomaterials at large sizes can be obtained. ¡ª¡ªNi Bing,Shi Yuang,Wang Xun,The Sub-Nanometer Scale as a New Focus in Nanoscience.[J] .Adv. Mater. Weinheim, 2018, 30: e1802031. |
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gxytju2008
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ÄãÕâÊÇÑÇ΢Ã×°¡¡£¡£subnanometer: Having dimensions, or a resolution, of less than a nanometer. |
3Â¥2020-04-12 20:04:03
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