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Applied Physics Letters / Volume 96 / Issue 18 / BIOPHYSICS AND BIO-INSPIRED SYSTEMS

Appl. Phys. Lett. 96, 183701 (2010); http://dx.doi.org/10.1063/1.3383229 (3 pages)

Cell patterning using microstructured ferromagnetic thin films

Mei-Feng Lai (賴梅鳳)1, Chia-Yi Chen (陳珈亦)1, Chiun-Peng Lee (李俊鵬)1, Hao-Ting Huang (黃晧庭)2, Tzong-Rong Ger (葛宗融)2, and Zung-Hang Wei (衛榮漢)2

1Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 300, Taiwan
2Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan

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(Received 14 November 2009; accepted 15 March 2010; published online 3 May 2010)

Magnetic cell patterning is demonstrated through controlling the micromagnetic states in microstructured ferromagnetic thin films. The number of magnetic nanoparticles entering the cells by endocytosis can be determined by magnetophoresis experiment and is found to be dependent of the cocultured extracellular magnetic nanoparticles concentrations. In zigzag magnetic films the effects of cell patterning differ for magnetic films at as-deposited state and at remanent states after applying fields in different directions. Remanent states of concentric rings are proposed for cell patterning. Cells can be arranged at any positions in sequence by selectively changing the magnetic field directions.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

biomagnetism, cellular biophysics, ferromagnetic materials, magnetic particles, magnetic thin films, micromagnetics, nanoparticles, remanence

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3383229

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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