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Nanopowder consolidation under high strain rate shock compression is a potential method for synthesizing and processing bulk nanomaterials. A thorough investigation of the shock deformation of powder materials is of great engineering…

Materials Science · Physics 2024-03-14 D. B. He , M. Y. Wang , W. B. Bi , M. Shang , Y. Cai , L. Deng , X. M. Zhang , J. F. Tang , L. Wang

Gold nanoparticle assemblies show a strong plasmonic response due to the combined effects of the individual nanoparticles' plasmon modes. Increasing the number of nanoparticles in structured assemblies leads to significant shifts in the…

Optics · Physics 2022-07-13 Aditya K. Sahu , Satyabrata Raj

Efforts aimed at large-scale integration of nanoelectronic devices that exploit the superior electronic and mechanical properties of single-walled carbon nanotubes (SWCNTs) remain limited by the difficulties associated with manipulation and…

Confined electronic states and optical transitions in 3D topological insulator nanoparticles have been studied in the literature, assuming idealized geometries such as spheres or infinitely long cylinders, that allow to obtain analytical…

Mesoscale and Nanoscale Physics · Physics 2022-03-03 Jorge David Castaño-Yepes , Enrique Muñoz

Moving nanoparticles/atoms to study the nearfield interaction between them is one of the many approaches to explore the optical and electrical properties of these assemblies. Traditional approach included the self assembly by spinning or…

Mesoscale and Nanoscale Physics · Physics 2015-01-09 Farbod Shafiei

The combination of nanodiamonds with plasmonic metal particles is being explored for synergic effects that can enhance biosensing and antibacterial treatments, energy harvesting, photocatalysis, and quantum centres. Here we systematically…

We study the low-temperature isothermal magnetic hysteresis of cubical and spherical nanoparticles with ferromagnetic (FM) core - antiferromagnetic (AF) shell morphology, in order to elucidate the sensitivity of the exchange bias effect to…

Mesoscale and Nanoscale Physics · Physics 2017-03-23 V. Dimitriadis , D. Kechrakos , O. Chubykalo-Fesenko , V. Tsiantos

The diffusion of monovacancies in gold has been studied by computer simulation. Multiple jumps have been found to play a central role in the atomic dynamics at high temperature, and have been shown to be responsible for an upward curvature…

Condensed Matter · Physics 2010-12-17 G. De Lorenzi , F. Ercolessi

While nanoalloys are of paramount scientific and practical interests, the main processes leading to their formation are still poorly understood. Key structural features in the alloy systems, including crystal phase, chemical ordering, and…

The self-assembly of metallic nanoparticles is a promising route to metasurfaces with unique properties for many optical applications, such as surface-enhanced spectroscopy, light manipulation, and sensing. We present an in-depth…

Mesoscale and Nanoscale Physics · Physics 2019-07-08 Bruno G. M. Vieira , Niclas S. Mueller , Eduardo B. Barros , Stephanie Reich

We present an ab-initio study of the hybridization of localized surface plasmons in a metal nanoparticle dimer. The atomic structure, which is often neglected in theoretical studies of quantum nanoplasmonics, has a strong impact on the…

Localized plasmonic modes of metallic nanoparticles may hybridize like those of atoms forming a molecule. However, the rapid decay of the plasmonic fields outside the metal severely limits the range of these interactions to tens of…

Optics · Physics 2013-03-05 Adi Salomon , Yehiam Prior , Radoslaw Kolkowski , Joseph Zyss

This paper presents the most complete framework to date for understanding the nonlinear optical trapping of highly absorbing nanoparticles within the dipole regime. Highly absorbing and plasmonic particles garner considerable interest due…

Optics · Physics 2024-06-05 Siavash Mirzaei-Ghormish , Kamran Qaderi , Daniel Smalley

The melting of metallic nanoparticles is governed by surface pre-melting, a phenomenon traditionally modeled as the isotropic growth of a uniform liquid shell. Challenging this classical view, we report facet-dependent surface pre-melting…

Materials Science · Physics 2026-02-19 Marthe Bideault , Arnaud Allera , Ryoji Asahi , Jérôme Creuze , Erich Wimmer

Optically active color centers in nanodiamonds offer unique opportunities for generating and manipulating quantum states of light. These mechanically, chemically, and optically robust emitters can be produced in mass quantities,…

Plastic deformation of metallic alloys usually takes place through slip, but occasionally involves twinning. In particular, twinning is important in hexagonal close packed materials where the easy slip systems are insufficient to…

Materials Science · Physics 2018-02-14 Dingyi Sun , Mauricio Ponga , Kaushik Bhattacharya , Michael Ortiz

Colloidal particles can create reconfigurable nanomaterials, with applications such as color-changing, self-repairing, and self-regulating materials and reconfigurable drug delivery systems. However, top-down methods for manipulating…

Soft Condensed Matter · Physics 2024-07-26 Mark N. McDonald , Cameron K. Peterson , Douglas R. Tree

The hcp-fcc transformation induced in cobalt powder by ball milling at room temperature was studied using the excess Gibbs free energy for the metals, in nanometric form, to calculate the activation energy that the atoms need for the phase…

Materials Science · Physics 2007-05-23 J. C. de Lima , V. H. F. dos Santos , T. A. Grandi , R. S. de Biasi

The electronic and structural properties of zigzag and armchair single-wall carbon nanotubes (SWCNT) with a single vacancy or two vacancies located at various distances have been obtained within the frame of the Density Function Theory…

Atomic and Molecular Clusters · Physics 2008-07-15 A. Proykova , H. Iliev , Feng Yin Li

Coupled and shape-tailored metallic nanoparticles are known to exhibit hybridized plasmon resonances. This Letter discuss the optical properties of a complementary system formed by overlapped nanovoid dimers buried in gold and filled with…

Materials Science · Physics 2009-11-13 I. Romero , T. V. Teperik , F. J. Garcia de Abajo