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Magnetically Powered Flexible Metal Nanowire Motors.
- Source :
-
Journal of the American Chemical Society . 10/20/2010, Vol. 132 Issue 41, p14403-14405. 3p. 1 Diagram. - Publication Year :
- 2010
-
Abstract
- Fuel-free magnetically driven propulsion of flexible Au! Au/Ag/Ni nanowires, with a gold `head' and nickel `tail', linked by a partially dissolved and weakened silver bridge, is described. The flexible bridge facilitates the cyclic mechanical deformations under an external rotating magnetic field. Under such a field the nickel segment starts to rotate, facilitating the rotation of the gold segment at a different amplitude, hence breaking the system symmetry and inducing the movement. Forward (`pushing') and backward (`pulling') magnetically powered locomotion and a precise On/Off motion control are achieved by tailoring the length of the nickel and gold segments and modulating the magnetic field, respectively. Efficient locomotion in urine samples and in high-salt media is illustrated. The new magnetic nanowire swimmers can be prepared in large scale using a simple template electrodeposition protocol and offer considerable promise for diverse practical applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00027863
- Volume :
- 132
- Issue :
- 41
- Database :
- Academic Search Index
- Journal :
- Journal of the American Chemical Society
- Publication Type :
- Academic Journal
- Accession number :
- 55030006
- Full Text :
- https://doi.org/10.1021/ja1072349