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Synthesis and Measurement of Magnetic Cobalt DNA-Templated Nanowire

Published online by Cambridge University Press:  01 February 2011

Chia-Hsin Lin ,
Shi-Yuan Tong ,
Shin-Wei Lin ,
Hsin-Lung Chen ,
Yi-Chun Liu ,
Hsien-Kuang Lin ,
Wen-Lian Liu ,
Syh-Yuh Cheng  and
Yi-Hui Wang
Chia-Hsin Lin
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Shi-Yuan Tong
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Shin-Wei Lin
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Hsin-Lung Chen
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Yi-Chun Liu
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Hsien-Kuang Lin
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Wen-Lian Liu
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Syh-Yuh Cheng
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
Yi-Hui Wang
Affiliation:
[email protected], Industrial Technology Research Institute, Material and Chemical Research Laboratories, I300, MCL/ITRI, Rm.324, Bldg.77, 195 Sec.4, Chung Hsing Rd., Chutung, Hsinchu, Taiwan, 300, Taiwan
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Abstract

Biomaterials such as DNA are currently being explored as potential application in nanotechnology. DNA templates were immobilized on crystal-violet-treated mica by spin coating as a grid-like network. The DNA templates were then activated with PdCl2, followed by reduction with dimethylamine borane (DMAB) to form seeding nanoclusters on the DNA chain. Afterward the DNA chain with deposition of zero-valence Pd nanoclusters was grew in a Co electroless plating bath. SEM/EDS analysis revealed that Co nanoparticles could be assembled on the DNA template to form magnetic nanowires with a diameter of 25nm to 250nm by a conventional electroless plating. Vibrating Sample Magnetometer analysis indicated that Co-DNA nanowires showed a paramagnetic characteristic. Grid-like networks of DNA template were effectively preserved after Co electroless plating. These characteristics indicated that DNA is an ideal template for the production of magnetic nanowires, which could be useful in the development of high-density memory storage or magnetic field sensors.

Keywords

biological synthesis (assembly)core/shellmagnetic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 921: Symposium T – Nanomanufacturing , 2006 , 0921-T02-10
Copyright
Copyright © Materials Research Society 2006

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