Results 21 to 30 of about 267,710 (192)

Restructuring highly electron-deficient metal-metal oxides for boosting stability in acidic oxygen evolution reaction

open access: yesNature Communications, 2021
The poor catalyst stability for oxygen evolution in acidic media has been a long-time issue. Here, authors demonstrate iridium on MoO3 exhibits a low overpotential for oxygen evolution and excellent durability in acidic media due to the high oxidation ...
Xinghui Liu   +11 more
doaj   +1 more source

A general characterization method for nonlinearities in superconducting circuits

open access: yesNew Journal of Physics, 2019
Detailed knowledge of nonlinearity in superconducting microwave circuits is required for the optimal control of their quantum state. We present a general method to precisely characterize this nonlinearity to very high order.
T Weißl   +4 more
doaj   +1 more source

3D Micro/Nanopatterning of a Vinylferrocene Copolymer

open access: yesMolecules, 2020
In nanoimprint lithography (NIL), a pattern is created by mechanical deformation of an imprint resist via embossing with a stamp, where the adhesion behavior during the filling of the imprint stamp and its subsequent detachment may impose some practical ...
Dennis Löber   +6 more
doaj   +1 more source

Ferromagnetic resonance and interlayer exchange coupling in magnetic multilayers with compositional gradients

open access: yesAIP Advances, 2017
Ferromagnetic resonance (FMR) in magnetic multilayers of type F1/f/F2, where two strongly ferromagnetic layers F1 and F2 are separated by a weakly magnetic spacer f with a compositional gradient along its thickness, is investigated.
D. M. Polishchuk   +4 more
doaj   +1 more source

Soft Coulomb gap and asymmetric scaling towards metal-insulator quantum criticality in multilayer MoS2

open access: yesNature Communications, 2018
The interplay between strong interactions and presence of disorder makes atomically thin transition metal dichalcogenides an ideal platform to study phase transitions and critical phenomena.
Byoung Hee Moon   +6 more
doaj   +1 more source

Telluriding monolayer MoS2 and WS2 via alkali metal scooter

open access: yesNature Communications, 2017
Two dimensional monolayer transition metal ditellurides and their alloys are interesting but their growth has been difficult. Herein, Yun et al. demonstrate the use of sodium salts to convert transition metal disulfide to ditelluride and alloys in ...
Seok Joon Yun   +9 more
doaj   +1 more source

Imaging high-speed friction at the nanometer scale

open access: yesNature Communications, 2016
It has been a challenge to characterize microscopic origins of friction at high velocities. Here authors extend atomic force microscopy to develop a dynamic technique combining force sensitivity and spatial resolution and able to probe, at each image ...
Per-Anders Thorén   +4 more
doaj   +1 more source

Magnetic Hysteresis in Nanostructures with Thermally Controlled RKKY Coupling

open access: yesNanoscale Research Letters, 2018
Mechanisms of the recently demonstrated ex-situ thermal control of the indirect exchange coupling in magnetic multilayer are discussed for different designs of the spacer layer.
Dmytro Polishchuk   +5 more
doaj   +1 more source

Ultrananocrystalline diamond coated implants for enhanced osseointegration [PDF]

open access: yesBioDiscovery, 2017
Osteoporosis causes bones to become weak and brittle. It is known that the alterations in bone metabolism associated to osteoporosis can impair bone healing around implants and affect their osseointegration.
Silviya Stateva   +3 more
doaj   +3 more sources

Misorientation-angle-dependent electrical transport across molybdenum disulfide grain boundaries

open access: yesNature Communications, 2016
Grain boundaries can degrade the performance of electronic devices made from single atomic layers of transition metal dichalcogenides. Here, the authors combine transport measurements and transmission electron microscopy to find a correlation between ...
Thuc Hue Ly   +8 more
doaj   +1 more source

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