Results 141 to 150 of about 24,891 (249)

Imaging and Linking Spatial Magnetic Nanoparticle Distribution to Microbead Torques Using Soft X‐Ray Laminography

open access: yesAdvanced Physics Research, Volume 5, Issue 6, June 2026.
Nanoscale 3D imaging of superparamagnetic microbeads via soft X‐ray laminography reveals the structural origin of the observed torques in cell movement experiments. These microbeads are found to have an uneven distribution of magnetic magnetite nanoparticles.
Findan Block   +9 more
wiley   +1 more source

Leveraging Carbon Quantum Dots to Achieve UN Sustainable Development Goals in the Face of Climate Change

open access: yesClimate Resilience and Sustainability, Volume 5, Issue 1, June 2026.
Carbon quantum dots (CQDs) play a significant role in supporting the UN SDGs by promoting the sustainable management of energy, healthcare, remediation, and agriculture in a multidisciplinary manner. It focuses on reducing waste, toxicity, and energy use while utilizing renewable resources.
Manish Kumar Sah   +6 more
wiley   +1 more source

Ferromagnetic Cobalt Oxide With Structural Distortion and Oxidation State Changes for Hydrogen Sulfide Gas Detection

open access: yesSmall, Volume 22, Issue 32, 8 June 2026.
High H2S gas sensitivity was improved by electrochemically engineering Co3O4/CoO heterostructures with oxygen vacancies and aligning nanosized particles via magnetic‐field‐assisted deposition. This alignment enhanced gas diffusion and electron transport, reducing base resistance. The resulting sensor exhibited high selectivity and a strong response (Rg/
Shin Joon Kang   +5 more
wiley   +1 more source

Synthesis of Photoresponsive Water-Dispersible Magnetite Nanoparticles using Arylazopyrazole Modified Polymers

open access: yes
In order to design new nanomaterials with improved functionalities, magnetite nanoparticles (MNP) modified with arylazopyrazole (AAP) molecular photoswitches are presented.
Lisa, Schlichter   +3 more
core   +1 more source

New Potential Haematite and Magnetite Reference Materials for Iron Isotope Measurements by Solution Nebulisation MC‐ICP‐MS and by In Situ ns‐LA‐MC‐ICP‐MS

open access: yesGeostandards and Geoanalytical Research, Volume 50, Issue 2, Page 407-418, June 2026.
Key Points Two haematite and magnetite materials were developed as potential Fe isotope reference materials. Solution and in situ LA‐MC‐ICP‐MS analyses yielded consistent δ56Fe values. Both materials are isotopically homogeneous and suitable for in situ Fe isotope calibration.
Jialu Yu   +4 more
wiley   +1 more source

Acquisition of Self‐Reversed Magnetization in Greigite Driven by Antiparallel Vortex‐Core Coupling During Low‐Temperature Oxidation

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Self‐reversed magnetization, acquired antiparallel to the external field, can complicate the interpretation of paleomagnetic directional records, particularly in altered greigite‐bearing sediments with anomalous magnetizations. The underlying physical process for this self‐reversal remains poorly constrained.
Shichu Chen, Liao Chang, Wyn Williams
wiley   +1 more source

The effect of polycations on the formation of magnetite nanoparticles

open access: yes, 2020
Nanoparticles of magnetite (Fe3O4) are envisioned to find used in diverse applications, ranging from magnetic data storage, inks, ferrofluids as well as in magnetic resonance imaging, drug delivery, and hyperthermia cancer treatment. Their magnetic properties strongly depend on their size and morphology, two properties that can be synthetically ...
openaire   +2 more sources

Performance Evaluation of Magnetite Nanoparticles Modified with Sodium Alginate for the Removal of Acid Red 18 Dye from Aqueous Solutions

open access: yesMuhandisī-i Bihdāsht-i Muḥīṭ, 2014
Background: Azo dyes have many applications in various industries. In addition to Mutagenic and carcinogenic potential to humans, these materials cause the production of toxic byproducts in the aqueous solutions.
Mohammad Reza Samarghandi   +3 more
doaj  

Uso de nanopartículas de ferro zero-valente na remediação de solos contaminados: degradação redutiva do azul de metileno [PDF]

open access: yes, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2014.Atualmente, a nanotecnologia tem sido estudada amplamente, podendo se tornar uma das mais ...
Vieira, Gabriela Bonfanti
core  

Synthesis and Properties of MPEG-Coated Superparamagnetic Magnetite Nanoparticles

open access: yes, 2020
The magnetite nanoparticles were synthesized by the thermal decomposition of iron(III) acetylacetonate in methoxy polyethylene glycol, which was used as solvent, reducing agent, and modifying agent in the reaction. The morphologies and phase compositions
Xueli Cao   +3 more
core  

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