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.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
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)

Urheber
Zhu, Qirong
Cohen, Sidney R.
Brontvein, Olga
Fransson, Jonas
Naaman, Ron

DOI
10.1002/smll.202406631
URN
urn:nbn:de:101:1-2408291429061.721707145459
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:38 MESZ

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Beteiligte

  • Zhu, Qirong
  • Cohen, Sidney R.
  • Brontvein, Olga
  • Fransson, Jonas
  • Naaman, Ron

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