Results 31 to 40 of about 291,296 (268)

Metal-Insulator Transition from Graphene to Graphane

open access: yesNanomaterials and Nanotechnology, 2013
Graphane is obtained by perfectly hydrogenating graphene. There exists an intermediate material, partially hydrogenated graphene (which we call hydrographene), interpolating from pure graphene to pure graphane.
Motohiko Ezawa
doaj   +1 more source

Modulation of the optical properties of transition metal doped PbSe quantum dots in silicate glasses

open access: yesMaterials Research Express, 2020
Optical properties of lead chalcogenide quantum dots (QDs) can be controlled by tuning its bandgaps. We prepared silicate glasses using the melt-quenching method and heat-treated 510 °C–540 °C for 10 h to precipitate transition metal ions into PbSe QDs ...
Belay Brehane Tesfamariam   +1 more
doaj   +1 more source

Photodeposited metal-semiconductor nanocomposites and their applications

open access: yesJournal of Materiomics, 2018
While two-dimensional layered nanomaterials including transition metal oxides and transition metal dichalcogenides have been widely researched because of their unique electronic and optical properties, they still have some limitations.
Yoonkyung Lee   +6 more
doaj   +1 more source

METAL-NON METAL TRANSITIONS IN TRANSITION METAL COMPOUNDS.THE ELECTRONIC PHASE TRANSITIONS IN FeS AND NiS [PDF]

open access: yesLe Journal de Physique Colloques, 1976
FeS and NiS show first order phase transitions with a change in electronic structure at Ta = 415 K and Tt = 265 K respectively, the latter depending sensitively on non-stoichiometry in the form of nickel vacancies. Extensive experimental data on NiS is reviewed which shows that the low-temperature phase is a semimetallic itinerant-electron ...
Coey, J., Roux-Buisson, H., Brusetti, R.
openaire   +2 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

The Metallic Bond for Monolayer Transition Metal Layers on Transition Metal Surfaces [PDF]

open access: yes, 1994
This present work discusses changes in the electronic and chemical properties of some transition metal layers on transition metal substrates, and presents a simple framework for understanding the results.
Strongin, M.   +4 more
openaire   +1 more source

Photochemistry of Transition Metal Hydrides [PDF]

open access: yesChemical Reviews, 2016
Photochemical reactivity associated with metal-hydrogen bonds is widespread among metal hydride complexes and has played a critical part in opening up C-H bond activation. It has been exploited to design different types of photocatalytic reactions and to obtain NMR spectra of dilute solutions with a single pulse of an NMR spectrometer.
Perutz, Robin N., Procacci, Barbara
openaire   +3 more sources

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Microstructure and composition of rare earth-transition metal-aluminium-magnesium alloys

open access: yesMaterials Research, 2008
The determination of the microstructure and chemical composition of La0.7-xPr xMg0.3Al 0.3Mn0.4Co0.5 Ni3.8 (0 < x < 0.7) metal hydride alloys has been carried out using scanning electron microscopy (SEM), energy dispersive X ray analysis (EDX) and X ray ...
Lia Maria Carlotti Zarpelon   +3 more
doaj   +1 more source

How Cobalt and Iron Doping Determine the Oxygen Evolution Electrocatalytic Activity of NiOOH

open access: yesCell Reports Physical Science, 2020
Summary: The 3d transition metals have been investigated as active centers in NiOOH to catalyze oxygen evolution reaction (OER); however, questions about the mechanism remain.
Yuhai Dou   +13 more
doaj   +1 more source

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