Results 81 to 90 of about 24,751 (224)

Experimental Proof to Natural Hydrogen Generated Through Serpentinization of Olivine at Room Temperature and Ambient Pressure With Mechanochemistry

ChemSusChem, Volume 19, Issue 13, 14 July 2026.
This work shows experimentally the possibility of serpentinization (main mechanism of natural hydrogen) at room temperature and ambient pressure, which may provide the rapidly growing hydrogen economy with inspirations to explore new natural hydrogen deposits and new methods for hydrogen production. Natural hydrogen, or “white hydrogen,” is a promising
Jikai Ye, Derya Demirbas, Michael Felderhoff   +2 more
wiley   +1 more source

Chemical and Technological Aspects of Magnetic Particles for Cancer Liquid Biopsy Applications

ChemistryOpen, Volume 15, Issue 7, July 2026.
Magnetic bead engineering for liquid biopsy diagnostics reviews advances in magnetic bead design for the selective enrichment of circulating tumor DNA (ctDNA), circulating tumor cells (CTCs), and extracellular vesicles (EVs) from complex biofluids.
Beatriz Naranjo‐Martínez, Ana Laura Coria‐Gutiérrez, Sunčica Sukur, Sedef Ozel‐Okcu, Václav Ranc, Francisco J. Terán, Franca Raucci, Marco A. Pierotti, Domenico Scionti, Anna Piperno   +9 more
wiley   +1 more source

Magnetic domains and surface effects in hollow maghemite nanoparticles [PDF]

, 2008
In the present work, we investigate the magnetic properties of ferrimagnetic and non-interacting maghemite hollow nanoparticles obtained by the Kirkendall effect.
Labarta, Amilcar, Puntes, Victor, Balcells, Lluis, Alivisatos, A. Paul, Iglesias, Oscar, Cabot, Andreu, Batlle Gelabert, Xavier   +6 more
core   +1 more source

Instability of Gas‐Phase‐Assembled Pd–Fe Alloy Nanoparticles Under Ambient Conditions: Pd/FeOx Core–Shell Formation and Magnetic and Hydrogen‐Sensing Consequences

Small Structures, Volume 7, Issue 7, July 2026.
Pd–Fe nanoparticles exhibit Fe segregation that, upon exposure to ambient conditions, leads to the formation of Pd/FeOx core–shell structures. The resulting ultrathin FeOx shells induce glassy magnetic behavior in nanoparticle films. These results demonstrate how intrinsic segregation combined with oxidation governs the structure and magnetic ...
Moisés G. Zarzoza Medina, Raúl López‐Martín, Benito Santos Burgos, Santiago Ceballos, Óscar J. Durá, Irene Morales, Beatrice Muzzi, José F. Marco, Miguel A. Arranz, Panagiotis Grammatikopoulos, Daniel Salazar, Peter S. Normile, José A. De Toro   +12 more
wiley   +1 more source

Hyperfine interactions in maghemite and magnetite particles [PDF]

, 2011
Thesis is aimed at studying of magnetic iron oxide particles of submicron and nanoscale dimensions by means of nuclear magnetic resonance (NMR). 57 Fe NMR inves- tigations were carried out in composite bentonite/maghemite with respect to tempera- ture of
Křišťan, Petr
core  

Electroless plated maghemite for three-dimensional magneto photonic crystals [PDF]

, 2017
Three-dimensional magneto photonic crystals (3D-MPCs) are promising material for manipulating light in 3D space. In this study, we fabricated 3D-MPC that is filling the air-gap of opal photonic crystal with magnetic material by electroless plating.
Shinichiro Mito, Takuya Kawashima, Mitsuteru Inoue, Takuma Kawaguchi, Junji Sasano, Hiroyuki Takagi   +5 more
core   +1 more source

Insights on Lightning‐Induced Remanent Magnetization From High‐Current Impulse Experiments

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract Lightning strikes generate intense transient magnetic fields capable of inducing strong and complex remanent magnetizations in rocks, potentially overprinting their original paleomagnetic record. To investigate the mechanisms and outcomes of lightning‐induced remanent magnetization, we conducted controlled high‐current impulse experiments on ...
M. De Andrade Nunes, R. I. F. Trindade, J. Salminen, R. I. Albrecht, A. Silva Neto, G. G. C. Pimentel   +5 more
wiley   +1 more source

Hyperfine interactions in maghemite and magnetite particles [PDF]

, 2014
Thesis is aimed at studying of magnetic iron oxide particles of submicron and nanoscale dimensions by means of nuclear magnetic resonance (NMR). 57 Fe NMR inves- tigations were carried out in composite bentonite/maghemite with respect to tempera- ture of
Křišťan, Petr
core  

Wet Chemical Approach for Vanadium Doped Maghemite (Fe2-xVxO3) Nanocrystals [PDF]

, 2016
Background: Nanomaterials are widely synthesized by wet chemical routes. Magnetic nanoparticles with size ranging from 2 to 20 nm are of significant importance, resulting in a unique magnetic property of the nanoparticles.
Sunarti, Abd Rahman, Hasany, S. F., Nour, A. H.   +2 more
core   +1 more source

Effective Adsorption of Methylene Blue dye onto Magnetic Nanocomposites. Modeling and Reuse Studies

Applied Sciences, 2019
In the present study, new adsorbent beads of alginate (A)/maghemite nanoparticles (γ-Fe2O3)/functionalized multiwalled carbon nanotubes (f-CNT) were prepared and characterized by several techniques, e.g., N2 adsorption-desorption isotherms, Fourier ...
Silvia Alvarez-Torrellas, Mokhtar Boutahala, Nadia Boukhalfa, Macarena Munoz   +3 more
doaj   +1 more source