Detection of Magnetically Labeled Cells Using Wavelike Permalloy Nanowires

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概要

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• Permalloy nanowires of 150, 300, 500, and 800 nm widths deposited onto wavelike silicon trenches were designed as single-cell sensing devices. Magnetoresistance curves before and after attaching a single magnetic cell on the nanowires were measured when magnetic fields were applied in various directions. It was observed that the highest sensitivity (27%) in switching field variation after a cell was attached can be obtained when the field was applied perpendicular to the plane of the 150-nm-wide nanowire. The highest sensitivity (25.5%) in magnetoresistance ratio variation occurred in the 800-nm-wide nanowire in the same field direction.

• 2013-03-25

著者

• Wei Zung-hang

  Department Of Physics National Taiwan University

• Huang Hao-Ting

  Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan

• Lin Ya-Hui

  Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan

• Ger Tzong-Rong

  Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan

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• Detection of Magnetically Labeled Cells Using Wavelike Permalloy Nanowires

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