A new technique for nanoparticle transport and its application in a novel nano-sieve.
A new technique for nanoparticle transport and its application in a novel nano-sieve.
复制标题
纳米粒子传输新技术及其在新型纳米筛中的应用
DOI：
10.1038/s41598-018-28033-5
复制
发表时间：
2018-06-26
影响因子：
4.6
通讯作者：
Chen S
中科院分区：
文献类型：
--
作者：
Wang S;Wang C;Peng Z;Chen S
提出了一种新技术来传输和进一步分类不同尺寸的纳米颗粒。采用石墨烯片作为基材；将纳米粒子放置在基板上并且滑块位于基板下方。当滑块在石墨烯基底下方移动时，滑块与纳米粒子之间的范德华相互作用产生驱动力。系统研究了石墨烯基底的预张力、纳米颗粒的尺寸和层数、滑移速度、界面可通约性和温度对纳米颗粒传输的影响。研究发现，预张紧的石墨烯基底可以提供更容易的纳米颗粒传输。纳米颗粒的初始运动取决于面内力和驱动力之间的竞争，而随后的传输取决于滑块的滑动速度和粘性阻尼力。基于这种新的传输机制，可以设计一种新型纳米筛，利用这种筛可以自发地筛选和分类不同尺寸的纳米颗粒。我们的研究结果可能有助于纳米粒子的运输、操作和分类的有前景的设计。
A new technique is proposed to transport and further classify nanoparticles of different sizes. A graphene sheet is used as the substrate; a nanoparticle is placed on the substrate and a sliding block is located below the substrate. As the sliding block moves under the graphene substrate, a driving force is yielded from the van der Waals interaction between the sliding block and the nanoparticle. The effects of the pre-tension of the graphene substrate, size and number of layers of the nanoparticle, slip velocity, the interface commensurability and temperature on nanoparticle transportation are systematically investigated. It is found that a pre-tensioned graphene substrate could provide easier nanoparticle transport. The initial movement of the nanoparticle depends on the competition between the in-plane force and the driving force, while the subsequent transport depends on the slip velocity of the sliding block and the viscous damping force. Based on such a new transport mechanism, a novel nano-sieve can be designed, with which nanoparticles of different sizes can be screened and classified spontaneously. Our findings may be useful for promising designs of transportation, manipulation and classification of nanoparticles.
登录
查看更多内容
影响因子：
10.8
作者：
Krupke, R;Hennrich, F;von Lohneysen, H
通讯作者：
von Lohneysen, H
影响因子：
64.8
作者：
Bustamante, C;Bryant, Z;Smith, SB
通讯作者：
Smith, SB
影响因子：
56.9
作者：
Postma, HWC;Teepen, T;Dekker, C
通讯作者：
Dekker, C
影响因子：
17.1
作者：
Feng, Xiaofeng;Kwon, Sangku;Salmeron, Miquel
通讯作者：
Salmeron, Miquel
石墨烯摩擦接触质量的不断变化
影响因子：
64.8
作者：
Li, Suzhi;Li, Qunyang;Li, Ju
通讯作者：
Li, Ju