English
Related papers

Related papers: Pt-based nanowire networks with enhanced oxygen-re…

200 papers

Thermoelectric (TE) materials achieve localised conversion between thermal and electric energies, and the conversion efficiency is determined by a figure of merit zT. Up to date, two-dimensional electron gas (2DEG) related TE materials hold…

The dewetting of thin Pt films on different surfaces is investigated as a means to provide the patterning for the top-down fabrication of GaN nanowire ensembles. The transformation from a thin film to an ensemble of nanoislands upon…

We report the fabrication of high Tc superconducting wires by photodoping a GdBa2Cu3O{6.5} thin film. An optical near-field probe was used to locally excite carriers in the system at room temperature. Trapping of the photogenerated…

Superconductivity · Physics 2009-10-31 R. S. Decca , H. D. Drew , B. Maiorov , J. Guimpel , E. Osquiguil

We have performed first-principles calculations for the mechanic and electric properties of pure Pt nano-contacts and a Pt contact with a single CO molecule adsorbed. For the pure Pt contacts we see a clear difference between point contacts…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 M. Strange , K. S. Thygesen , K. W. Jacobsen

We present here the synthesis and structural characterization of hybrid Au-polypyrrole-Au and Pt- polypyrrole-Au nanowires together with a study of their electrical properties from room-temperature down to very low temperature. A careful…

Mesoscale and Nanoscale Physics · Physics 2011-12-21 L. Gence , S. Faniel , C. Gustin , S. Melinte , V. Bayot , V. Callegari , O. Reynes , S. Demoustier-Champagne

The resistive-pulse technique provides a fast and label-free method for nanoparticle detection. In order to achieve a higher sensitivity, thin nanopores, such as silicon nitride pores, are usually considered. In this paper, nanoparticle…

Chemical Physics · Physics 2018-09-25 Yinghua Qiu

Platinum (Pt) is the element with the largest spin Hall conductivity and is known as the most efficient spin-to-charge conversion material in spintronic THz emitters. By alloying with aluminum (Al), its resistivity can be substantially…

Nanocomposite metal oxide thin films exhibit assuring qualities in the field of gas sensors because of the collective opportunities provided by the heterointerface formation. In this work, we present the synthesis of nitrogen doped…

Materials Science · Physics 2022-02-07 P. K. Shihabudeen , Ayan Roy Chaudhuri

Pt electrocatalytic nanoparticles were deposited onto hybrid carriers composed of reduced graphene oxide (rGO)-transition metal hexacyanoferrate (Prussian Blue-PB) and the resulting system's electrochemical activity was investigated during…

Crystalline nanoporous molecular networks are assembled on the Ag(111) surface, where the pores confine electrons originating from the surface state of the metal. Depending on the pore sizes and their coupling, an antibonding level is…

We report on the fabrication and electrical characterization of field-effect devices based on wire-shaped InP crystals grown from Au catalyst particles by a vapor-liquid-solid process. Our InP wires are n-type doped with diameters in the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 S. De Franceschi , J. A. van Dam , E. P. A. M. Bakkers , L. F. Feiner , L. Gurevich , L. P. Kouwenhoven

Electrochemical cells employing Sodium (Na) and Zinc (Zn) electrodes and a chloride salt electrolyte have been imaged by neutron radiography during cycling. The use of such abundant raw materials confers a very low energy-normalised cost to…

Metal mixed polymers are a cheap and effective way to produce flexible metals and superconductors. As part of an on-going effort to learn how to tune the properties of these systems with ion implantation, we present a study of the…

Materials Science · Physics 2009-06-15 Andrew P. Stephenson , Ujjual Divakar , Adam P. Micolich , Paul Meredith , Ben J. Powell

Adding porosity to battery electrodes is believed to be universally useful for adding space to accommodate volumetric expansion, electrolyte access to all active materials, helping to mitigate poor C-rate performance for thicker electrodes…

Applied Physics · Physics 2020-08-26 Sally O'Hanlon , David McNulty , Ruiyuan Tian , Jonathan Coleman , Colm O'Dwyer

Magnetic garnets such as yttrium iron garnet (Y$_3$Fe$_5$O$_{12}$, YIG) are widely used in spintronic and magnonic devices. Their magnetic and magneto-optical properties can be modified over a wide range by tailoring their chemical…

High-entropy perovskite thin films, as the prototypical representative of the high-entropy oxides with novel electrical and magnetic features, have recently attracted great attention. Here, we reported the electronic structure and charge…

Materials Science · Physics 2021-04-08 Yuqi Liang , Bingcheng Luo , Huijuan Dong , Danyang Wang

We demonstrate the self-assembled formation of AlN nanowires by molecular beam epitaxy on sputtered TiN films on sapphire. This choice of substrate allows growth at an exceptionally high temperature of 1180 {\deg}C. In contrast to previous…

The transport of low-energy electrons through the coating of a radiosensitizing metallic nanoparticle under fast ion irradiation is analyzed theoretically and numerically. As a case study, we consider a poly(ethylene glycol)-coated gold…

Atomic and Molecular Clusters · Physics 2018-06-26 Kaspar Haume , Pablo de Vera , Alexey Verkhovtsev , Eugene Surdutovich , Nigel J. Mason , Andrey V. Solov'yov

Ammonium tetrathiomolybdate (ATM) spontaneously self assembles on Au electrodes forming a hydrophilic, air stable, pH (3-11) tolerant multilayer that is stable over a reasonably large potential window. The ATM functionalized Au electrodes…

Materials Science · Physics 2014-09-11 Sudipta Chatterjee , Kushal Sengupta , Abhishek Dey

Electrocatalysts for the oxygen reduction reaction (ORR) based on complexes of iron and nitrogen in a carbon matrix (Fe-N-C) are a promising alternative to platinum group metal (PGM) based catalysts in polymer electrolyte membrane (PEM)…

Materials Science · Physics 2019-11-11 Yun Xu , Michael J. Dzara , Sadia Kabir , Svitlana Pylypenko , Kenneth Neyerlin , Andriy Zakutayev