Concept

Potassium

Publications associées (93)

Na-ion dynamics in Quasi-1D compound NaV2O4

We have used the pulsed muon source at ISIS to study high-temperature Na-ion dynamics in the quasi-one-dimensional (Q1D) metallic antiferromagnet NaV2O4. By performing systematic zero-field and longitudinal-field measurements as a function of temperature w ...

Iop Publishing Ltd2014

Hybrid polarizing solids for pure hyperpolarized liquids through dissolution dynamic nuclear polarization

David Lyndon Emsley, Geoffrey Bodenhausen, Aurélien Bornet, Sami Jannin, Jonas Milani, Basile Vuichoud, David Benjamin Roger Antoine Gajan

Hyperpolarization of substrates for magnetic resonance spectroscopy (MRS) and imaging (MRI) by dissolution dynamic nuclear polarization (D-DNP) usually involves saturating the ESR transitions of polarizing agents (PAs; e.g., persistent radicals embedded in ...

National Academy of Sciences2014

Polaritonic Feshbach resonance

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Stéphane Trebaol, Naotomo Takemura

A Feshbach resonance occurs when the energy of two interacting free particles comes into resonance with a molecular bound state. When approaching this resonance, marked changes in the interaction strength between the particles can arise. Feshbach resonance ...

Nature Publishing Group2014

A dip coating process for large area silicon-doped high performance hematite photoanodes

Michael Graetzel, Artur Braun, Yelin Hu, Florent Alexandre Boudoire

A facile and low-cost dip-coating process for the deposition of silicon doped hematite films (Si:alpha-Fe2O3) for hydrogen production by solar water splitting in photo-electrochemical cells (PEC) is presented. The precursors include iron nitrate, oleic aci ...

Amer Inst Physics2013

A microfluidic approach to synthesizing high-performance microfibers with tunable anhydrous proton conductivity

Philippe Renaud, Arnaud Bertsch, Mohammad Mahdi Hasani-Sadrabadi, Fatemeh Sadat Majedi, Jules John Vandersarl

Here, we demonstrate a new approach for the synthesis of ion exchange microfibers with finely tuned anhydrous conductivity. This work presents microfluidics as a system to control the size and phosphoric acid (PA) doping level of the polybenzimidazole (PBI ...

Royal Society of Chemistry2013

Nb-Doped Colloidal TiO2 Nanocrystals with Tunable Infrared Absorption

Raffaella Buonsanti, Anna Llordes Gil

We report a new colloidal synthesis of niobium-doped TiO2 anatase nanocrystals (NCs) that allows for the prepn. of ∼10 nm NCs with control over the amt. of Nb doping up to ∼14%. The incorporation of niobium ions leads to the appearance of a tunable, broad ...

2013

A calcium ion-selective electrode array for monitoring the activity of HepG2/C3As in a microchannel

Philippe Renaud, Robert Meissner

Variations in calcium ion (Ca2+) concentrations play a crucial role in cell-cell communication; periodic changes act as cellular signals. In this study, we developed a solid-state calcium ion-selective electrode (Ca2+ ISE) integrated in a microchannel to m ...

Elsevier2012

Spirocyclization by Palladium-Catalyzed Domino Heck–Direct C–H Arylation Reactions: Synthesis of Spirodihydroquinolin-2-ones

Jieping Zhu

Treatment of a DMA solution of anilide 1 with a catalytic amount of palladium acetate (0.025 equiv) and XPhos (0.05 equiv) in the presence of potassium carbonate (2.0 equiv) at 100 C afforded dihydroquinolin-2-ones spiro-fused to dihydrofuranyl, indolinyl, ...

2012

Magnetic communication and reactivity of a stable homometallic cation-cation trimer of pentavalent uranyl

Marinella Mazzanti, Lucile Sylvie Danielle Chatelain

The reaction of the UO2+ precursor [(UO 2Py5)(KI2Py2)]n, with the potassium salt of the tetradentate aza β-diketiminate ligand L (L = 2-(4-tolyl)-1,3-bis(quinolyl)malondiiminate) affords the ...

2012

The influence of sodium and potassium hydroxide on alite hydration: Experiments and simulations

Karen Scrivener, Aditya Kumar, Caterina Gianocca

The basic nature of alkali hydroxides (NaOH, KOH) when added to mixing water, increases the pH in proportion to the level of salt addition. For alite (impure tricalcium silicate; MIII-Ca3SiO5) hydration, this pH increase accelerates the rate of hydration a ...

Pergamon-Elsevier Science Ltd2012

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