Magnetically Powered Flexible Metal Nanowire Motors

被引:342
作者
Gao, Wei [1 ]
Sattayasamitsathit, Sirilak [1 ]
Manesh, Kalayil Manian [1 ]
Weihs, Daniel [2 ]
Wang, Joseph [1 ]
机构
[1] Univ Calif San Diego, Dept Nanoengn, La Jolla, CA 92093 USA
[2] Technion Israel Inst Technol, Fac Aerosp Engn, IL-32000 Haifa, Israel
基金
美国国家科学基金会;
关键词
SILVER; DECOMPOSITION;
D O I
10.1021/ja1072349
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Fuel-free magnetically driven propulsion of flexible 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.
引用
收藏
页码:14403 / 14405
页数:3
相关论文
共 18 条
[1]   Propulsion of nanowire diodes [J].
Calvo-Marzal, Percy ;
Sattayasamitsathit, Sirilak ;
Balasubramanian, Shankar ;
Windmiller, Joshua R. ;
Dao, Cuong ;
Wang, Joseph .
CHEMICAL COMMUNICATIONS, 2010, 46 (10) :1623-1624
[2]   Microscopic artificial swimmers [J].
Dreyfus, R ;
Baudry, J ;
Roper, ML ;
Fermigier, M ;
Stone, HA ;
Bibette, J .
NATURE, 2005, 437 (7060) :862-865
[3]   The Behavior of Silver Nanotextiles during Washing [J].
Geranio, L. ;
Heuberger, M. ;
Nowack, B. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (21) :8113-8118
[4]   Controlled Propulsion of Artificial Magnetic Nanostructured Propellers [J].
Ghosh, Ambarish ;
Fischer, Peer .
NANO LETTERS, 2009, 9 (06) :2243-2245
[5]   CATALYTIC ACTIVITY OF SILVER .1. ACTIVITY, POISONING, AND REGENERATION DURING DECOMPOSITION OF HYDROGEN-PEROXIDE [J].
GOSZNER, K ;
KORNER, D ;
HITE, R .
JOURNAL OF CATALYSIS, 1972, 25 (02) :245-&
[6]   DECOMPOSITION OF HYDROGEN-PEROXIDE ON SILVER-GOLD ALLOYS [J].
GOSZNER, K ;
BISCHOF, H .
JOURNAL OF CATALYSIS, 1974, 32 (02) :175-182
[7]   Rheology of active-particle suspensions [J].
Hatwalne, Y ;
Ramaswamy, S ;
Rao, M ;
Simha, RA .
PHYSICAL REVIEW LETTERS, 2004, 92 (11) :118101-1
[8]   The hydrodynamics of swimming microorganisms [J].
Lauga, Eric ;
Powers, Thomas R. .
REPORTS ON PROGRESS IN PHYSICS, 2009, 72 (09)
[9]   POWERING NANOROBOTS [J].
Mallouk, Thomas E. ;
Sen, Ayusman .
SCIENTIFIC AMERICAN, 2009, 300 (05) :72-77
[10]   Hinged nanorods made using a chemical approach to flexible nanostructures [J].
Mirkovic, Tihana ;
Foo, Maw Lin ;
Arsenault, Andre C. ;
Fournier-Bidoz, Sebastien ;
Zacharia, Nicole S. ;
Ozin, Geoffrey A. .
NATURE NANOTECHNOLOGY, 2007, 2 (09) :565-569