Volume 19, Issue 40 2304129
Research Article

Exploring the Magnetic Properties of Individual Barcode Nanowires using Wide-Field Diamond Microscopy

Jungbae Yoon

Jungbae Yoon

Department of Physics, Korea University, Seoul, 02841 Republic of Korea

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Jun Hwan Moon

Jun Hwan Moon

Department of Materials Science and Engineering, Korea University, Seoul, 02841 Republic of Korea

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Jugyeong Chung

Jugyeong Chung

Department of Physics, Korea University, Seoul, 02841 Republic of Korea

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Yu Jin Kim

Yu Jin Kim

Institute for High Technology Materials and Devices, Korea University, Seoul, 02841 Republic of Korea

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Kihwan Kim

Kihwan Kim

Department of Physics, Korea University, Seoul, 02841 Republic of Korea

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Hee Seong Kang

Hee Seong Kang

KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841 Republic of Korea

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Yoo Sang Jeon

Yoo Sang Jeon

Center for Hydrogen∙Fuel Cell Research, Korea Institute of Science and Technology, Seoul, 02792 Republic of Korea

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Eunsoo Oh

Eunsoo Oh

Department of Materials Science and Engineering, Korea University, Seoul, 02841 Republic of Korea

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Sun Hwa Lee

Sun Hwa Lee

Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919 Republic of Korea

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Kihoon Han

Kihoon Han

BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841 Republic of Korea

Department of Neuroscience, Korea University College of Medicine, Seoul, 02841 Republic of Korea

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Dongmin Lee

Dongmin Lee

BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841 Republic of Korea

Department of Anatomy, Korea University College of Medicine, Seoul, 02841 Republic of Korea

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Chul-Ho Lee

Chul-Ho Lee

Department of Electrical and Computer Engineering, Seoul National University, Seoul, 08826 Republic of Korea

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Young Keun Kim

Corresponding Author

Young Keun Kim

Department of Materials Science and Engineering, Korea University, Seoul, 02841 Republic of Korea

Institute for High Technology Materials and Devices, Korea University, Seoul, 02841 Republic of Korea

Email: [email protected]; [email protected]

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Donghun Lee

Corresponding Author

Donghun Lee

Department of Physics, Korea University, Seoul, 02841 Republic of Korea

Email: [email protected]; [email protected]

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First published: 01 June 2023
Citations: 2

Abstract

A barcode magnetic nanowire typically comprises a multilayer magnetic structure in a single body with more than one segment type. Interestingly, due to selective functionalization and novel interactions between the layers, it has attracted significant attention, particularly in bioengineering. However, analyzing the magnetic properties at the individual nanowire level remains challenging. Herein, the characterization of a single magnetic nanowire is investigated at room temperature under ambient conditions based on magnetic images obtained via wide-field quantum microscopy with nitrogen-vacancy centers in diamond. Consequently, critical magnetic properties of a single nanowire can be extracted, such as saturation magnetization and coercivity, by comparing the experimental result with that of micromagnetic simulation. This study opens up the possibility for a versatile in situ characterization method suited to individual magnetic nanowires.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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