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首页> 外文会议>2014 Zone 1 Conference of the American Society for Engineering Education >Magnetotaxis for nanofabrication
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Magnetotaxis for nanofabrication

机译：纳米制造的趋磁

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Magnetotactic bacteria (MTB), discovered in early 1970s contain single-domain crystals of magnetite (Fe3O4) or greigite (Fe3S4) called magnetosomes ranging from 35 to 120 nm in size. These crystals tend to form a chain like structure from the proximal to the distal pole along the long axis of the cell and align through an acidic protein mamJ to the bacterial cytoskeleton filament made out of actin-like protein mamK. The ability of these bacteria to sense the magnetic field, also called magnetotaxis, arises from the magnetic dipole moment of the entire chain of magnetosomes acting as a large magnet. Such organisms being facultatively anaerobic are able to sense the geomagnetic field and traverse the oxic-anoxic interface in aquatic habitats for optimal oxygen concentrations. Two aspects that are of particular interest are their phenomenal control of direction using magnetic field as well as the efficient displacement of selective nanoparticles. We aim to understand the efficacies of Magnetospirillum magneticum (AMB-1) in miniaturized semiconductor fabrication utilizing single and multi-walled carbon nanotubes.
机译：在1970年代初发现的趋磁细菌（MTB）包含磁铁矿（Fe3O4）或钙铁矿（Fe3S4）的单畴晶体，其大小在35至120 nm之间。这些晶体倾向于沿着细胞的长轴从近端到远端形成链状结构，并通过酸性蛋白mamJ与由肌动蛋白样蛋白mamK制成的细菌细胞骨架细丝对齐。这些细菌感知磁场的能力（也称为磁力趋向性）是由充当大磁体的磁小体的整个链的磁偶极矩引起的。这种兼性厌氧的生物能够感应地磁场，并遍历水生生境中的氧-氧界面，以获得最佳的氧气浓度。特别令人关注的两个方面是它们使用磁场对方向的惊人控制以及选择性纳米颗粒的有效置换。我们旨在了解磁螺旋藻（AMB-1）在利用单壁和多壁碳纳米管的小型半导体制造中的功效。

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