Universität zu Köln

Honecker, Dirk ORCID: 0000-0003-0763-982X, Bender, Philipp ORCID: 0000-0002-2492-3956, Falke, Yannic, Dresen, Dominique ORCID: 0000-0001-8628-6799, Kundt, Matthias, Schmidt, Annette M., Tschoepe, Andreas, Sztucki, Michael ORCID: 0000-0002-5314-9402, Burghammer, Manfred and Disch, Sabrina ORCID: 0000-0002-4565-189X (2022). Controlling the rotation modes of hematite nanospindles using dynamic magnetic fields. Nanoscale Adv., 4 (21). S. 4535 - 4542. CAMBRIDGE: ROYAL SOC CHEMISTRY. ISSN 2516-0230

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Abstract

The magnetic field-induced actuation of colloidal nanoparticles has enabled tremendous recent progress towards microrobots, suitable for a variety of applications including targeted drug delivery, environmental remediation, or minimally invasive surgery. Further size reduction to the nanoscale requires enhanced control of orientation and locomotion to overcome dominating viscous properties. Here, control of the coherent precession of hematite spindles via a dynamic magnetic field is demonstrated using nanoscale particles. Time-resolved small-angle scattering and optical transmission measurements reveal a clear frequency-dependent variation of orientation and rotation of an entire ensemble of non-interacting hematite nanospindles. The different motion mechanisms by nanoscale spindles in bulk dispersion resemble modes that have been observed for much larger, micron-sized elongated particles near surfaces. The dynamic rotation modes promise hematite nanospindles as a suitable model system for field-induced locomotion in nanoscale magnetic robots.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Honecker, Dirk UNSPECIFIED orcid.org/0000-0003-0763-982X UNSPECIFIED Bender, Philipp UNSPECIFIED orcid.org/0000-0002-2492-3956 UNSPECIFIED Falke, Yannic UNSPECIFIED UNSPECIFIED UNSPECIFIED Dresen, Dominique UNSPECIFIED orcid.org/0000-0001-8628-6799 UNSPECIFIED Kundt, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmidt, Annette M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tschoepe, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Sztucki, Michael UNSPECIFIED orcid.org/0000-0002-5314-9402 UNSPECIFIED Burghammer, Manfred UNSPECIFIED UNSPECIFIED UNSPECIFIED Disch, Sabrina UNSPECIFIED orcid.org/0000-0002-4565-189X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-685485
DOI:	10.1039/d2na00522k
Journal or Publication Title:	Nanoscale Adv.
Volume:	4
Number:	21
Page Range:	S. 4535 - 4542
Date:	2022
Publisher:	ROYAL SOC CHEMISTRY
Place of Publication:	CAMBRIDGE
ISSN:	2516-0230
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SMALL-ANGLE; SCATTERING Multiple languages Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68548