Results 91 to 100 of about 359,135 (308)

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

open access: yesAdvanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon   +7 more
wiley   +1 more source

Kinetic Study of Esterification of Acetic Acid with n-butanol and isobutanol Catalyzed by Ion Exchange Resin [PDF]

open access: yes, 2011
Esters are an important pharmaceutical intermediates and very useful perfumery agents. In this study the esterification of acetic acid with n-butanol and iso-butanol over an acidic cation exchange resin, Amberlyst 15 were carried out.
Wanchoo , Ravinder Kumar   +7 more
core   +1 more source

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

open access: yesAdvanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov   +10 more
wiley   +1 more source

Charge exchange in ion-atom collusions relevant to fusion plasma diagnostics [PDF]

open access: yes, 1998
Total charge exchange and excitation cross-sections are presented for collisions between He(^2+) ions and helium atoms, the laboratory frame collision energy being in the range 16-800keV.
Davies, Peter George
core  

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

open access: yesAdvanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa   +3 more
wiley   +1 more source

Measurement of MAST edge ion temperatures and velocities [PDF]

open access: yes, 2011
A novel experimental method using gas puffing of neutrals to stimulate charge exchange emission has been developed to measure ion temperatures and toroidal rotation velocities in the edge of MAST.
Morgan, Thomas
core  

Effects of reaction ion kinetic energy on both endothermic and exothermic ion/molecule reactions in a quadrupole ion trap mass spectrometer

open access: yes, 2011
The effects of kinetic energy on the outcomes of exothermic and endothermic ion/molecule reactions in a quadrupole ion trap mass spectrometer are examined.
Wu, H. F. ; 吳慧芬; Brodbelt, J. S.
core   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

open access: yesAdvanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu   +13 more
wiley   +1 more source

Fabrication of high-capacity protein ion-exchangers with polymeric ion-exchange groups grafted onto micron-sized beads by atom transfer radical polymerization

open access: yes, 2015
The static adsorption capacity for proteins is regarded as the benchmark for achieving high binding capacity in protein chromatography. This research provided an efficient and controlled approach for the synthesis of ion-exchange beads with high ...
Shi, Qing-Hong, Li, Shu, Sun, Yan
core   +1 more source

Sorption-Analytic, Microcalorimetric and Study of Ion-Exchange Equilibria Involving Mg and Ca Cations on Clinoptilolite

open access: yesAdsorption Science & Technology, 2007
The exchange equilibrium between Mg 2+ and Ca 2+ ions and the corresponding microcalorimetric ion-exchange heats were studied on two clinoptilolite (Cli) samples.
Yuri I. Tarasevich   +3 more
doaj   +1 more source

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