Magneto-Acoustic Hybrid Nanomotor
Magneto-Acoustic Hybrid Nanomotor
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DOI：
10.1021/acs.nanolett.5b01945
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发表时间：
2015-07-01
期刊：
影响因子：
10.8
通讯作者：
Wang, Joseph
中科院分区：
文献类型：
--
作者：
Li, Jinxing;Li, Tianlong;Wang, Joseph
在恶劣环境中的有效和受控的纳米级推进需要精心设计和制造纳米机器，这可以以高空间和时间分辨率获得和转换推进力。在这里，我们报告了一类新的人工纳米机器，命名为磁声混合纳米机器人，它显示，在磁场或声场的存在下，不添加任何化学燃料的有效推进。这些无燃料混合纳米马达，其中包括一个磁性螺旋结构和一个凹纳米棒端，合成使用模板辅助电化学沉积过程，然后通过段选择性化学蚀刻。动态切换的推进模式与运动方向的逆转和数字调速演示了一个单一的纳米车辆。这些混合纳米马达表现出不同的仿生集体行为，包括稳定的聚集，群体运动和群体漩涡，触发响应于不同的字段输入。这种自适应混合操作和控制集体行为的设计智能纳米车辆，自主重新配置其操作模式，根据其使命或响应于其周围环境的变化，或在自己的性能，从而持有相当大的希望，为各种实际的生物医学应用的无燃料纳米机器。
Efficient and controlled nanoscale propulsion in harsh environments requires,careful design and manufacturing of nanomachines, which can harvest and translate the propelling forces with high spatial and time resolution. Here we report a new class of artificial nanomachine, named magneto-acoustic hybrid nanomotor, which displays,efficient propulsion in the presence of either magnetic or acoustic fields without adding any chemical fuel. These fuel-free hybrid nanomotors, which comprise a magnetic helical structure and a concave nanorod end, are synthesized using a template-assisted electrochemical deposition process followed by segment-selective chemical etching. Dynamic switching of the propulsion mode with reversal of the movement direction and digital speed regulation are demonstrated on a single nanovehicle. These hybrid nanomotors exhibit a diverse biomimetic collective behavior, including stable aggregation, swarm motion, and swarm vortex, triggered in response to different field inputs. Such adaptive hybrid operation and controlled Collective behavior hold considerable promise for designing smart nanovehicles that autonomously reconfigure their operation mode according to their mission or in response to changes in their surrounding environment or in their own performance, thus holding considerable promise for diverse practical biomedical applications of fuel-free nanomachines.