Self-Propelled Nanotools
Self-Propelled Nanotools
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DOI：
10.1021/nn204762w
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发表时间：
2012-02-01
期刊：
影响因子：
17.1
通讯作者：
Schmidt, Oliver G.
中科院分区：
文献类型：
--
作者：
Solovev, Alexander A.;Xi, Wang;Schmidt, Oliver G.
我们描述了自主和远程引导催化自推进 InGaAs/GaAs/(Cr)Pt 管形式的纳米级工具。这些直径在 280-600 nm 范围内的卷起的管子在过氧化氢溶液中以高达 180 μ m s(-1) 的速度移动。化学能有效地转化为平移运动，使这些管能够执行有用的任务，例如运输货物。此外，我们观察到，虽然圆柱形卷起的管沿直线移动，但不对称卷起的管沿螺旋形轨迹移动，从而使这些管能够钻孔并将其自身嵌入生物材料中。我们的观察表明，形状和不对称性可用于引导催化纳米管的运动并在纳米尺度上实现机械化功能。
We describe nanoscale tools in the form of autonomous and remotely guided catalytically self-propelled InGaAs/GaAs/(Cr)Pt tubes. These rolled-up tubes with diameters in the range of 280-600 nm move in hydrogen peroxide solutions with speeds as high as 180 mu m s(-1). The effective transfer of chemical energy to translational motion has allowed these tubes to perform useful tasks such as transport of cargo. Furthermore, we observed that, while cylindrically rolled-up tubes move in a straight line, asymmetrically rolled-up tubes move In a corkscrew-like trajectory, allowing these tubes to drill and embed themselves into biomaterials. Our observations suggest that shape and asymmetry can be utilized to direct the motion of catalytic nanotubes and enable mechanized functions at the nanoscale.