We have simulated by Monte Carlo method the thermal behaviour of a small (N=13 particles) cluster described by a Heisenberg model including nearest neighbours ferromagnetic interactions and radial surface anisotropy, in an applied magnetic field. We have studied three different lattice structures: hexagonal close packed, face centered cubic and icosahedral. We show that the zero field thermal b...

We present orientation dependence and tuning of Fano resonances in plasmonic gold nanorod heptamer nanostructures. The heptamer structures were formed by surrounding a central circular nanoparticle by six satellite nanorods in a hexagonal arrangement and the heptamer structures were then embedded in a thin flexible membrane. The Fano resonance was found to depend on the orientation of the nanor...

We report on the coupling between ferroelectric and magnetic order parameters in a nanostructured BaTiO3-CoFe2O4 ferroelectromagnet. This facilitates the interconversion of energies stored in electric and magnetic fields and plays an important role in many devices, including transducers, field sensors, etc. Such nanostructures were deposited on single-crystal SrTiO3 (001) substrates by pulsed l...

Controlled engineering of isolated solid state quantum systems is one of the most prominent goals in modern nanotechnology. In this letter we demonstrate a previously unknown quantum system namely silicon carbide tetrapods. The tetrapods have a cubic polytype core (3C) and hexagonal polytype legs (4H)--a geometry that creates spontaneous polarization within a single tetrapod. Modeling of the te...

Anodic porous alumina has been widely investigated and used as a nanostructure template in various nanoapplications. The porous structure consists of numerous hexagonal cells perpendicular to the aluminum substrate and each cell has several tens or hundreds of nanoscale pores at its center. Because the nanomorphology of anodic porous alumina is limited by the electrolyte during anodizing, the d...

Most of the applications of the nanostructures dependent on the morphologies which affects the opto-electronics properties. This research article provides a pathway of guiding optical properties like band-gap and fluorescence properties by controlled growth of nano-rods, flowers, -needles ortubes without external chemical doping, by simple hydrothermal method by controlling over synthesis param...

Nano-sized gold has become an important material in various fields of science and technology, where control over the size and crystallography is desired to tailor the functionality. Gold crystallizes in the face-centered cubic (fcc) phase, and its hexagonal closed packed (hcp) structure is a very unusual and rare phase. Stable Au hcp phase has been reported to form in nanoparticles at the tips ...

Single layers of carbon (graphene) and hexagonal boron nitride may be grown on transition metal surfaces. The substrates take the role of the support and allow due to their catalytic activity the growth of perfect layers by chemical vapor deposition. The layers are sp2 hybridized honeycomb networks with strong in plane �and weaker out of plane �-bonds to the substrate and to the adsorbates. Thi...

Department of Chemical, Biological and National Centre for Basic Sciences, Block JD India. E-mail: [email protected]; sr Laboratoire de Chimie Physique, UMR 8000 Cedex, France CNRS, Laboratoire de Chimie Physique, UM Sorbonne Universités, UPMC Univ. Paris Réactivité de Surface, F-75005 Paris, France Physical Chemistry Section, Department of Kolkata, India † Electronic supplementary inform...

Glancing angle deposition (GLAD) is a specific type of physical vapor that has the unique ability to generate three-dimensional nanofeatures in process-efficient and low-cost manner. Our research group previously demonstrated how line seeds can be strategically implemented create variety novel well-organized nanostructures. In this paper we explore use spherical self-assemble into hexagonally c...