Self-Propelled Nanotools
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- 作者：Alexander A. Solovev ; Wang Xi ; David H. Gracias ; Stefan M. Harazim ; Christoph Deneke ; Samuel Sanchez ; Oliver G. Schmidt
- 刊名：ACS Nano
- 出版年：2012
- 出版时间：February 28, 2012
- 年：2012
- 卷：6
- 期：2
- 页码：1751-1756
- 全文大小：426K
- 年卷期：v.6,no.2(February 28, 2012)
- ISSN：1936-086X
文摘
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鈥?00 nm move in hydrogen peroxide solutions with speeds as high as 180 渭m s鈥?. 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.