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We investigate the imaging properties of copper-based superlens surrounded by copper oxide (Cu$_2$O). A subwavelength image resolution of the order $\lambda/9$ is demonstrated theoretically and verified in numerical simulations. It is shown…

Mesoscale and Nanoscale Physics · Physics 2025-02-19 David Ziemkiewicz , Karol Karpiński , Sylwia Zielińska - Raczyńska

Plasma processing using a mixture of noble gas and oxygen is a technique that is currently being used to reduce field emission and multipacting in accelerating cavities. Plasma is created inside the cavity when the gas mixture is exposed to…

Plasma Physics · Physics 2023-06-21 N. K. Raut , T. Ganey , P. Dhakal , T. Powers

Surface nanobubbles are stable gaseous phases in liquids that form on solid substrates. While their existence has been confirmed, there are many open questions related to their formation and dissolution processes along with their structures…

Fluid Dynamics · Physics 2022-04-20 Zhizhao Che , Panagiotis E. Theodorakis

Self-standing TiO$_2$ nanotube layers in the form of membranes are fabricated by self-organizing anodization of Ti metal and a potential shock technique. The membranes were then decorated by sputtering different Pt amounts i) only at the…

Applied Physics · Physics 2020-06-02 Gihoon Cha , Marco Altomare , Nhat Truong Nguyen , Nicola Taccardi , Kiyoung Lee , Patrik Schmuki

An influence of a high-voltage (3-17 kV) 20 ns pulse on a weakly-ionized low-pressure (0.1-10 Pa) capacitively-coupled radiofrequency (RF) argon plasma is studied experimentally. The plasma evolution after pulse exhibits two characteristic…

Copper is a highly promising catalyst for the electrochemical CO$_2$ reduction reaction (CO2RR) since it is the only pure metal that can form highly added-value products such as ethylene and ethanol. Since the CO2RR takes place in aqueous…

Materials Science · Physics 2025-09-23 Linus C. Erhard , Johannes Schörghuber , Aleix Comas-Vives , Georg K. H. Madsen

Optical tweezers, the three-dimensional confinement of a nanoparticle by a strongly focused beam of light, have been widely employed in investigating biomaterial nanomechanics, nanoscopic fluid properties, and ultrasensitive detections in…

Raman amplification in plasma has been promoted as a means of compressing picosecond optical laser pulses to femtosecond duration to explore the intensity frontier. Here we show for the first time that it can be used, with equal success, to…

Plasma Physics · Physics 2015-05-27 R. Trines , F. Fiuza , R. Bingham , R. A. Fonseca , L. O. Silva , R. A. Cairns , P. A. Norreys

Catalysts of carbon monoxide oxidation were synthesized by deposition of platinum on titanium nitride (TiN). Two substrates with an average particle size of 18 and 36 nm were obtained by hydrogen reduction of titanium tetrachloride in a…

The effect of the voltage rise time on nanosecond and sub-nanosecond impulse breakdown of distilled water is studied. The dependence of anode initiated streamer inception on this parameter is shown to be more intricate than previously…

Plasma Physics · Physics 2015-10-28 Yohan Seepersad , Alexander Fridman , Danil Dobrynin

Transition metal carbides have sparked unprecedented enthusiasm as high-performance catalysts in recent years. Still, the catalytic properties of copper (Cu) carbide remain unexplored. By introducing subsurface carbon (C) to Cu(111),…

The data experimental synthesis and studies of layered organic-inorganic nanocomposites [Cu2(OH)3 + DS], resulting from ablation of copper in aqueous solutions of surfactant - dodecyl sodium sulfate (SDS) are presented. By the methods of…

Mesoscale and Nanoscale Physics · Physics 2012-03-15 Vyacheslav T. Karpukhin , Mikhail M. Malikov , Tatyana I. Borodina , Evgeniy G. Valyano , Olesya A. Gololobova

We have developed a method to simulate behavior of nanoporous materials in a molecular dynamics code. The nanoporous solid is produced via a spinodal decomposition of a material brought from a supercritical fluid into the two phase…

Materials Science · Physics 2008-07-10 Mark Duchaineau , Alex V. Hamza , Tomas Diaz De La Rubia , Farid F. Abraham

The plasmon-enhanced second harmonic generation in the subwavelength neutral metal cubic nanoparticles is calculated for the first time in the hydrodynamic and cold plasma approximations. The theory is developed that takes into account all…

Mesoscale and Nanoscale Physics · Physics 2016-02-15 S. V. Fomichev , A. M. Bratkovsky

This study utilizes molecular dynamics simulations to scrutinize the influence of type and volume fraction of nanoparticle on the density of nanofluids, i.e. silver (as a hydrophilic case) and titanium dioxide (as a hydrophobic case)…

Applied Physics · Physics 2021-05-20 M. M. Heyhat , M. Abbasi , A. Rajabpour

Using the catalytic CO oxidation at RuO2(110) as a showcase, we employ first-principles kinetic Monte Carlo simulations to illustrate the intricate effects on temperature programmed reaction spectroscopy data brought about by the mere…

Materials Science · Physics 2009-11-13 Michael Rieger , Jutta Rogal , Karsten Reuter

Coupled semiconductor nanostructures with a high degree of tunability are fabricated using local oxidation with a scanning force microscope. Direct oxidation of the GaAs surface of a Ga[Al]As heterostructure containing a shallow…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 M. Sigrist , A. Fuhrer , T. Ihn , K. Ensslin , D. C. Driscoll , A. C. Gossard

Experimental characterization and comparison of the temporal features of plasma produced by ultrafast (100 fs, 800 nm) and short-pulse (7ns, 1064 nm) laser pulses from a high purity nickel and zinc targets, expanding into a nitrogen…

Plasma Physics · Physics 2015-04-23 N. Smijesh

Ionising radiation interactions in matter can trigger a cascade of processes that underpin long-lived damage in the medium. To date, however, a lack of suitable methodologies has precluded our ability to understand the role that material…

Nanoparticle sintering remains a critical challenge in heterogeneous catalysis. In this work, we present a unified deep potential (DP) model for Cu nanoparticles on three Al$_2$O$_3$ surfaces ($\gamma$-Al$_2$O$_3$(100),…

Materials Science · Physics 2025-01-30 Jiayan Xu , Shreeja Das , Amar Deep Pathak , Abhirup Patra , Sharan Shetty , Detlef Hohl , Roberto Car
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