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When Chen et al. (2015, Acta Mater. 87, 78-85) investigated the deformation behavior of oligocrystalline gold microwires with varying diameters in both uniaxial tension and torsion, contrary size effects were observed for the different load…

Materials Science · Physics 2016-06-08 E. Bayerschen , A. Prahs , S. Wulfinghoff , M. Ziemann , P. A. Gruber , M. Walter , T. Böhlke

The combined strengthening effects of grain refinement and high precipitated volume fraction (~6at.%) on the mechanical properties of FeSiTi alloy subjected to SPD processing prior to aging treatment were investigated by atom probe…

Density functional theory calculations have been performed for the structural, electronic, magnetic and ferroelectric properties of a mixed-valence Fe(II)-Fe(III) formate framework [NH$_2$(CH$_3$)$_2$][Fe$^{\rm III}$Fe$^{\rm II}$(HCOO)$_6$]…

Materials Science · Physics 2019-10-15 Gang Tang , Wei Ren , Jiawang Hong , Alessandro Stroppa

We report on the fabrication and current-voltage (IV) characteristics of very narrow, strip-like arrays of metal nanoparticles. The arrays were formed from gold nanocrystals self-assembled between in-plane electrodes. Local cross-linking of…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Klara Elteto , Xiao-Min Lin , Heinrich M. Jaeger

The physical property characterization of Al doped Mg1-xAlxB2 system with x = 0.0 to 0.50 is reported. The results related to phase formation, structural transition, resistivity R(T) and magnetization M(T) measurements are discussed in…

Superconductivity · Physics 2012-01-24 Monika Mudgel , V. P. S. Awana , H. Kishan , G. L. Bhalla

Structural disorder is present in almost all experimental measurements of electronic transport through single molecules or molecular wires. To assess its influence on the conductance is computationally demanding, because a large number of…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 R. Maul , W. Wenzel

Low-molecular weight (LMW) hydrogels are gaining interest over macromolecular gels due to their reversible, dynamic and stimuli-responsive nature. They are potentially interesting functional materials for advanced applications such as…

The role of graded interfaces between materials in a cylindrical free-standing quantum wire with longitudinal heterostructures is theoretically investigated, by solving the Schr\"odinger equation within the effective mass approximation.…

Mesoscale and Nanoscale Physics · Physics 2011-05-06 Andrey Chaves , J. A. K. Freire , G. A. Farias

Although nanocrystalline alloys regularly exhibit high strengths, their use in structural applications often face challenges due to sample size limitations, unstable microstructures, and the limited ability to plastically deform. The…

Garnet-type Li$_{6.25}$Al$_{0.25}$La$_3$Zr$_2$O$_{12}$ (Al-LLZO) solid electrolytes are promising for all-solid-state batteries but are limited by interfacial resistance. In this work, dense and graded tri-layer Al-LLZO electrolytes were…

Materials Science · Physics 2026-03-24 Naisargi Kanabar , Seiichiro Higashiya , Haralabos Efstathiadis

In this work electron backscattered diffraction (EBSD)-assisted slip trace analysis and transmission electron microscopy have been utilized to investigate the interaction of basal dislocations with precipitates in the Mg alloys…

Materials Science · Physics 2024-02-13 C. M. Cepeda-Jiménez , M. Castillo-Rodríguez , M. T. Pérez-Prado

A method for the calculation of the conductance of nanoscale electrical junctions is extended to ab-initio electronic structure methods and applied to realistic models of metallic wires and break-junctions of sodium and gold. The method is…

Materials Science · Physics 2014-05-13 Matthieu J. Verstraete , P. Bokes , R. W. Godby

Liquid metal (LM)-based composites hold promise for soft electronics due to their high conductivity and fluidic nature. However, the presence of {\alpha}_Ga2O3 and GaOOH layers around LM droplets impairs conductivity and performance. We…

Systems and Control · Electrical Eng. & Systems 2025-01-30 Abdollah Hajalilou , Elahe Parvini , Tiago A. Morgado , Pedro Alhais Lopes , M. Estrela Melo Jorge , Marta Freitas , Mahmoud Tavakoli

Electronic transport properties in armchair shaped edges graphene nanoribbons (AGNRs) doped various impurities have been simulated by the non-equilibrium Green's function approach combined with the first principle calculation based on the…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Hiroyoshi Tsuyuki , Shoichi Sakamoto , Mitsuyoshi Tomiya

Exchange-coupled nanocomposites are considered as the most promising materials for production of high-energy performance permanent magnets, which can exceed neodymium ones in terms of energy product. In this work, micromagnetic simulations…

Materials Science · Physics 2020-07-07 V. L. Kurichenko , D. Yu. Karpenkov , P. A. Gostischev

The dilute magnetic semiconductors have promise in spin-based electronics applications due to their potential for ferromagnetic order at room temperature, and various unique switching and spin-dependent conductivity properties. However, the…

We study macroscopic electrical or thermal conductivity of a composite made of straight or coiled nanowires suspended in poorly conducting medium. We assume that volume fraction of the wires is so large that spaces occupied by them overlap,…

Soft Condensed Matter · Physics 2009-11-11 Tao Hu , A. Yu. Grosberg , B. I. Shklovskii

The electron transport properties of ZnO nano-wires coupled by two aluminium electrodes were studied by {\it ab initio} method based on non-equilibrium Green's function approach and density functional theory. A clearly rectifying…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Zijiang Yang , Langhui Wan , Yunjin Yu , Yadong Wei , Jian Wang

This work presents a detailed investigation into the effect of a low Cu addition (0.01 at.%) on precipitation in an Al-0.80Mg-0.85Si alloy during ageing. The precipitate crystal structures were assessed by scanning transmission electron…

Materials Science · Physics 2018-05-31 Jonas K. Sunde , Calin D. Marioara , Antonius T. J. van Helvoort , Randi Holmestad

Precipitation of the \gamma' (AlAg2) phase was investigated in Al-Ag(-Cu) alloys using high resolution transmission electron microscopy and scanning transmission electron microscopy. Precipitation commenced with segregation of silver to…

Materials Science · Physics 2012-01-09 Julian M. Rosalie , Laure Bourgeois , Barrington C. Muddle