Magnetic Monopole‐Like Behavior in Superparamagnetic Nanoparticle Coated With Chiral Molecules
Abstract: Superparamagnetic iron oxide nanoparticles (SPIONs) have attracted wide attention due to their promising applications in biomedicine, chemical catalysis, and magnetic memory devices. In this work, the force is measured between a single SPION coated with chiral molecules and a ferromagnetic substrate by atomic force microscopy (AFM), with the substrate magnetized either toward or away from the approaching AFM tip. The force between the coated SPION and the magnetic substrate depends on the handedness of the molecules adsorbed on the SPION and on the direction of the magnetization of the substrate. By inserting nm‐scale spacing layers between the coated SPION and the magnetic substrate it is shown that the SPION has a short‐range magnetic monopole‐like magnetic field. A theoretical framework for the nature of this field is provided.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Magnetic Monopole‐Like Behavior in Superparamagnetic Nanoparticle Coated With Chiral Molecules ; day:29 ; month:08 ; year:2024 ; extent:8
Small ; (29.08.2024) (gesamt 8)
- Creator
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Zhu, Qirong
Cohen, Sidney R.
Brontvein, Olga
Fransson, Jonas
Naaman, Ron
- DOI
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10.1002/smll.202406631
- URN
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urn:nbn:de:101:1-2408291429061.721707145459
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:38 AM CEST
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Associated
- Zhu, Qirong
- Cohen, Sidney R.
- Brontvein, Olga
- Fransson, Jonas
- Naaman, Ron
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