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Related papers: Self-Organized Growth of Nanoparticles on a Surfac…

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The thermal decomposition behavior, the microstructural evolution and its influence on the mechanical properties of a supersaturated Cu Co solid solution with ~100 nm average grain size prepared by severe plastic deformation is investigated…

Materials Science · Physics 2016-11-07 Andrea Bachmaier , Marina Pfaff , Moritz Stolpe , Hisham Aboulfadl , Christian Motz

Additive manufacturing (AM) by laser powder bed fusion (L-PBF) leads to the formation of a rich, hierarchical microstructure, including dislocation cell structures and elemental segregation. This structure has profound impacts on the…

Materials Science · Physics 2021-12-16 Mengkun Tian , Jahnavi Desai Choundraj , Thomas Voisin , Y. Morris Wang , Josh Kacher

Self assembly on suitably chosen substrates is a well exploited root to control the structure and morphology, hence magnetization, of metal films. In particular, the Cu3Au(001) surface has been recently singled out as a good template to…

Materials Science · Physics 2009-11-07 A. Verdini , L. Floreano , F. Bruno , D. Cvetko , A. Morgante , F. Bisio , S. Terreni , M. Canepa

The growth dynamics of submonolayer coverages of Cobalt during buffer layer assisted growth on Ag(111) and Pt(111) substrates is investigated by variable temperature scanning tunneling microscopy in the temperature range between 80 and 150…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 V. Sessi , K. Kuhnke , A. Enders , J. Zhang , P. Bencok , S. Bornemann , J. Minár , H. Ebert , J. Honolka , K. Kern

Periodic assemblies of nanoparticles are central to surface patterning, with applications in biosensing, energy conversion, and nanofabrication. Evaporation of colloidal droplets on substrates provides a simple yet effective route to…

Soft Condensed Matter · Physics 2026-01-29 Suman Bhattacharjee , Sanjoy Khawas , Sunita Srivastava

Si/Ge heteroepitaxial dots under tensile strain are grown on nanostructured Ge substrates produced by high-temperature flash heating exploiting the spontaneous faceting of the Ge(001) surface close to the onset of surface melting. A very…

Mesoscale and Nanoscale Physics · Physics 2019-04-18 L. Persichetti , M. Fanfoni , B. Bonanni , M. De Seta , L. Di Gaspare , C. Goletti , L. Ottaviano , A. Sgarlata

InN nanowires were grown on Si<111> and Si<100> substrates by plasma-assisted molecular beam epitaxy using a thin AlN buffer layer at temperatures compatible with the thermal budget limitation imposed by Back-End-Of-Line processing.…

In this work we show using atomistic simulations that the biased diffusion in high electric field gradients creates a mechanism whereby nanotips may start growing from small surface asperities. It has long been known that atoms on a…

In this paper, temporal growth and morphological evolution of ZnO nano-colloids were studied by in-situ UV-Vis absorption spectroscopy and Transmission Electron Microscopy (TEM) respectively. Nucleation of the nanoparticles was observed to…

Mesoscale and Nanoscale Physics · Physics 2021-10-22 Priyanka Sharma , P. B. Barman , Sanjiv Kumar Tiwari

In this work, we report the growth of a single mixed Bi$_{1-x}$Sb$_x$ layer, with diverse stoichiometries, on a Ag(111) substrate. The atomic geometry has been thoroughly investigated by low energy electron diffraction, scanning tunneling…

Materials Science · Physics 2024-03-25 Javier D. Fuhr , J. Esteban Gayone , Hugo Ascolani

Low-energy electron microscopy (LEEM) reveals a new mode of graphene growth on Ru(0001) in which Ru atoms are etched from a step edge and injected under a growing graphene sheet. Based on density functional calculations, we propose a model…

Materials Science · Physics 2010-12-14 E. Loginova , S. Maier , I. Stass , N. C. Bartelt , P. J. Feibelman , M. Salmeron , K. F. McCarty

(a+c) dislocations in hexagonal materials are typically observed to be dissociated into partial dislocations. Edge (a+c) dislocations are introduced into (0001) nitride semiconductor layers by the process of plastic relaxation. As there is…

Applied Physics · Physics 2023-10-19 J. Smalc-Koziorowska , J. Moneta , G. Muziol , W. Chrominski , R. Kernke , M. Albrecht , T. Schulz , I. Belabbas

We use soft x-ray vector-ptychographic tomography to determine the three-dimensional magnetization field in superparamagnetic nanoparticles self-assembled at the liquid-liquid interface and reveal the magnetic order induced by layered…

We analyze the strain state of GaN nanowire ensembles by x-ray diffraction. The nanowires are grown by molecular beam epitaxy on a Si(111) substrate in a self-organized manner. On a macroscopic scale, the nanowires are found to be free of…

Mesoscale and Nanoscale Physics · Physics 2015-12-10 Bernd Jenichen , Oliver Brandt , Carsten Pfueller , Pinar Dogan , Mathias Knelangen , Achim Trampert

Wrinkles in monolayer graphene (GN) affect the GN electronic and transport properties. Defined network of wrinkles can be reached by placing the GN on the substrate decorated with the nanoparticles (NPs). In order to explain mechanism…

Mesoscale and Nanoscale Physics · Physics 2015-12-02 Barbara Pacakova , Jana Vejpravova , Anton Repko , Alice Mantlikova , Martin Kalbac

The integration of graphene (Gr) with nitride semiconductors is highly interesting for applications in high-power/high-frequency electronics and optoelectronics. In this work, we demonstrated the direct growth of Gr on Al0.5Ga0.5N/sapphire…

Selective area growth of GaN nanostructures has been performed on full 2" c-sapphire substrates using Si3N4 mask patterned by nanoimprint lithography (array of 400 nm diameter circular holes). A new process has been developed to improve the…

Nanocrystalline metals with average grain sizes of only a few nanometers have recently been observed to fail through the formation of shear bands. Here, we investigate this phenomenon in nanocrystalline Ni which has had its grain structure…

Materials Science · Physics 2015-04-06 Amirhossein Khalajhedayati , Timothy J. Rupert

We investigate in detail the self-assembled nucleation and growth of GaN nanowires by molecular beam epitaxy on crystalline TiN films. We demonstrate that this type of substrate allows the growth of long and thin GaN nanowires that do not…

Coherent grazing-incidence small-angle X-ray scattering is used to investigate the average kinetics and the fluctuation dynamics during self-organized nanopatterning of silicon by Ar$^+$ bombardment at 65$^{\circ}$ polar angle. At early…

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