Evidence map›Paper›PMID 41361205›Full record

ArticleScientific reports2025

Magnetodynamics of short nanoparticle chains.

Thinh Q Bui, Samuel D Oberdick, Frank M Abel, Michael J Donahue, Klaus N Quelhas, Cindi L Dennis, Thomas E Cleveland, Yanxin Liu, Solomon I Woods

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Thinh Q BuiPhysical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA. thinh.bui@nist.gov.
Samuel D OberdickDepartment of Physics, University Of Colorado, Boulder, CO, 80305, USA.
Frank M AbelMaterial Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
Michael J DonahueInformation Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
Klaus N QuelhasPhysical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
Cindi L DennisMaterial Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
Thomas E ClevelandMaterial Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
Yanxin LiuInstitute for Bioscience and Biotechnology Research (IBBR), Rockville, MD, 20850, USA.
Solomon I WoodsPhysical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In recent years, there has been increasing interest in the understanding and application of nanoparticle assemblies driven by external fields. Although these systems can exhibit marked transitions in behavior compared to non-interacting counterparts, it has often proven challenging to connect their dynamics with underlying physical mechanisms or even to verifiably establish their structure under realistic experimental conditions. We have studied colloidal iron oxide nanoparticles that assemble into ordered, few-particle linear chains under the influence of oscillating and pulsed magnetic fields. In this work, our goal has been to answer the following question: by what physical mechanisms does the magnetic switching of a linear chain evolve from the switching of its constituent particles? Cryo-TEM has been used to flash freeze and image the structures formed by oscillatory drive fields, and magnetic relaxometry has been used to extract the multiple time constants associated with magnetic switching of the short chains. Armed with the physical structure from microscopy and the field-dependent switching times from magnetic measurements, we have conducted extensive micromagnetic simulations, revealing probable physical mechanisms for each time constant regime spanning [Formula: see text] (≈ 1 μs to 1 s) in time. These types of magnetic nanomaterials have great potential for biomedical technologies, particularly magnetic particle imaging and hyperthermia, and rigorous elucidation of their physics will hasten their optimization.

Indexed as

Magnetic nanoparticlesMagnetic particle imagingMagnetization dynamicsMagnetometryNanoscale assembly

Identifiers

PMID41361205
PMCPMC12695946

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.