推进
磁电机
群体行为
纳米技术
纳米棒
材料科学
计算机科学
工程类
航空航天工程
电气工程
电压
人工智能
作者
Jinxing Li,Tianlong Li,Tailin Xu,Melek Kiristi,Wenjuan Liu,Zhiguang Wu,Joseph Wang
出处
期刊:Nano Letters
[American Chemical Society]
日期:2015-06-19
卷期号:15 (7): 4814-4821
被引量:239
标识
DOI:10.1021/acs.nanolett.5b01945
摘要
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.
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