Results 61 to 70 of about 271,563 (296)

Bi-functional NaLuF4:Gd3+/Yb3+/Er3+ nanocrystals: hydrothermal synthesis, optical and magnetic properties [PDF]

Nanochemistry Research, 2017
Magnetic-fluorescent lanthanide doped sodium lutetium fluoride (NaLuF4:Yb3+/Er3+/Gd3+) nanocrystals were synthesized via facile hydrothermal method by varying concentration of Gd3+.
Haq Nawaz Sheikh, Jigmet Ladol, Heena Khajuria, Manesh Kumar   +3 more
doaj   +1 more source

Spin Disorder and Magnetic Anisotropy in Fe3O4 Nanoparticles

, 2006
We have studied the magnetic behavior of dextran-coated magnetite (Fe$_3$O$_4$) nanoparticles with median particle size $\left=8$ $nm$. Magnetization curves and in-field M\"ossbauer spectroscopy measurements showed that the magnetic moment $M_S$ of the ...
A. D. Arelaro, A. L. Brandl, Cullity B. D., Dormann J. L., E. Lima, G. F. Goya, Mørup S., Smit J.   +7 more
core   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Mössbauer Research and Magnetic Properties of Dispersed Microspheres from High-Calcium Fly Ash

Magnetochemistry
High-calcium fly ash (HCFA), produced from the lignite combustion, has emerged as a global concern due to its fine particle size and adverse environmental impacts. This study presents the characteristics of dispersed microspheres from HCFA obtained using
Elena V. Fomenko, Yuriy V. Knyazev, Galina V. Akimochkina, Sergey V. Semenov, Vladimir V. Yumashev, Leonid A. Solovyov, Natalia N. Anshits, Oleg A. Bayukov, Alexander G. Anshits   +8 more
doaj   +1 more source

Superspinglass state in functionalized zeolite 5A-maghemite nanoparticles

AIP Advances, 2021
The structural, vibrational, and magnetic properties of maghemite nanoparticles functionalized with zeolite type 5A and synthesized by coprecipitation were studied in detail.
Juan A. Ramos-Guivar, Edson Caetano Passamani, Jochen Litterst   +2 more
doaj   +1 more source

Mesoscopic superconductivity in ultrasmall metallic grains

, 2014
A nano-scale metallic grain (nanoparticle) with irregular boundaries in which the single-particle dynamics are chaotic is a zero-dimensional system described by the so-called universal Hamiltonian in the limit of a large number of electrons.
Alhassid, Y., Nesterov, K. N.
core   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Magnetic nanoparticles in square-wave fields for breakthrough performance in hyperthermia and magnetic particle imaging

Scientific Reports
Driving immobilized, single-domain magnetic nanoparticles at high frequency by square wave fields instead of sinusoidal waveforms leads to qualitative and quantitative improvements in their performance both as point-like heat sources for magnetic ...
Gabriele Barrera, Paolo Allia, Paola Tiberto   +2 more
doaj   +1 more source

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

Advanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud, Jakob Gruber, Hakan Göçerler, Pierluigi Bilotto, Christian Gierl‐Mayer, Elham Loni, Michael Naguib, Carsten Gachot   +7 more
wiley   +1 more source

Correlations weak and strong: divers guises of the two-dimensional electron gas

, 1998
The three-dimensional electron-gas model has been a major focus for many-body theory applied to the electronic properties of metals and semiconductors.
MacDonald, A. H.
core   +2 more sources