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Dependence of structural parameters on the size of nanoparticles is a topic of general interest where the effect of shape is often neglected. We report a comprehensive study on size dependent structural parameters of ZnO nanostructures (NS)…

Materials Science · Physics 2014-03-05 Manoranjan Ghosh , Debjani Karmakar , S. Basu , S. N. Jha , D. Bhattacharyya , S. C. Gadkari , S. K. Gupta

The magnetic structure of the in-plane skyrmions in epitaxial MnSi/Si(111) thin films is probed in three dimensions by the combination of polarized neutron reflectometry (PNR) and small angle neutron scattering (SANS). We demonstrate that…

Mesoscale and Nanoscale Physics · Physics 2017-08-09 S. A. Meynell , M. N. Wilson , K. L. Krycka , B. J. Kirby , H. Fritzsche , T. L. Monchesky

Conventional X-ray methods use incoming plane waves and result in discrete diffraction patterns when scattered at crystals. Here we find, by a systematic method, incoming waveforms which exhibit discrete diffraction patterns when scattered…

Optics · Physics 2015-06-16 Gero Friesecke , Richard D. James , Dominik Jüstel

In this work, we report numerical simulations and experiments of the optical response of a gold nanostrip embedded in a silicon strip waveguide gap at telecom wavelengths. We show that the spectral features observed in transmission and…

Optics · Physics 2016-04-28 Alba Espinosa-Soria , Amadeu Griol , Alejandro Martínez

It is shown that traditional estimates of the pore diameter in the porous silica material MCM-41-S15 (of order 15\AA) are too small to allow the amount of water that is absorbed by these materials (around 0.5gH2O/g substrate) to occur only…

Disordered Systems and Neural Networks · Physics 2015-05-28 Alan K Soper

We introduce a technique for extracting microstructural geometry from NMR lineshape analysis in porous materials at angstrom-scale resolution with the use of weak magnetic field gradients. Diverging from the generally held view of FID…

Materials Science · Physics 2024-10-15 Mohamad Niknam , Louis-S. Bouchard

Water nanoconfinement is known to occur inside material void spaces, such as 2D confinement between surfaces, 1D confinement inside nanotubes, and variable-dimension confinement inside nanoporous materials. In the present work we…

Applied Physics · Physics 2025-12-23 Bruno H. S. Mendonça , Elizane E. de Moraes , Hélio Chacham

The structure of Nd$_{1-x}$Pb$_{x}$MnO$_{3}$ crystals is determined by single crystal X-ray diffraction. Substitution of Pb at the Nd site results in structural phase change from tetragonal (x = 0.25) to cubic (x = 0.37). These changes are…

Strongly Correlated Electrons · Physics 2007-05-23 Nilotpal Ghosh , Suja Elizabeth , H. L. Bhat , G. Nalini , B. Muktha , T. N. Guru Row

Using different experimental techniques combined with density functional based theoretical methods we have explored the formation of interface-stabilized manganese oxide structures grown on Pd(100) at (sub)monolayer coverage. Amongst the…

Materials Science · Physics 2015-05-13 C. Franchini , R. Podloucky , F. Allegretti , F. Li , G. Parteder , S. Surnev , F. P. Netzer

Ba(Fe$_{1/2}$Nb$_{1/2}$)O$_3$ (BFN) ceramics are considered to be promising for technological applications owing to their high dielectric constant over a wide range of temperatures. However, there exists considerable discrepancy over the…

Structural and ferromagnetic properties in Mn implanted, p-type Si were investigated. High resolution structural analysis techniques like synchrotron X-ray diffraction revealed the formation of MnSi1.7 nanoparticles already in the as…

Skyrmions in confined geometries have been a subject of increasing interest due to the different properties that they exhibit compared to their bulk counterparts. In this study, nanoparticles of skyrmion-hosting…

Strongly Correlated Electrons · Physics 2021-11-17 S. J. R. Holt , A. Štefančič , J. C. Loudon , M. R. Lees , G. Balakrishnan

Absorption and scattering properties of nanoparticles immersed in an absorbing medium are essential in understanding the overall properties of composites and in designing materials with expected functionalities. In this paper, we establish…

Macroscopic fibres of carbon nanotubes are hierarchical structures combining long building blocks preferentially oriented along the fibre axis and a large porosity arising from the imperfect packing of bundles. Synchrotron small-angle X-ray…

We examine the structure of compact metal nanoparticles (NPs) forming polyhedral sections of face centered (fcc) and body centered (bcc) cubic lattices, which are confined by facets characterized by highly dense {100}, {110}, and {111}…

Atomic and Molecular Clusters · Physics 2022-03-21 Klaus E. Hermann

We propose a novel technique to probe shape of a single microbe embedded in a nematic liquid crystal (NLC) sample by observing geometry of dark brushes with optical microscope using a cross-polarizer set up. Assuming certain anchoring…

Soft Condensed Matter · Physics 2022-11-08 Ajit M. Srivastava

Nanoscale and microscale confinement of biopolymers naturally occurs in cells and has been recently achieved in artificial structures designed for nanotechnological applications. Here, we present an extensive theoretical investigation of…

Soft Condensed Matter · Physics 2007-06-13 Frederik Wagner , Gianluca Lattanzi , Erwin Frey

The structure of water confined in MCM41 silica cylindrical pores is studied to determine if confined water really is simply a version of the bulk liquid which can be substantially supercooled without crystallisation. A combination of total…

Soft Condensed Matter · Physics 2013-09-27 A K Soper

Ta films with tetragonal crystalline structure (beta-phase), deposited by magnetron sputtering on different substrates (steel, silicon and silicon dioxide), have been studied. In all cases, very highly preferred (001) orientation was…

Materials Science · Physics 2009-11-10 Aiqin Jiang , Trevor A. Tyson , Lisa Axe , Leszek Gladczuk , Marek Sosnowski , Paul Cote

We analyse a binary mixture of colloidal parallel hard cylindrical particles with identical diameters but dissimilar lengths $L_1$ and $L_2$, with $s=L_2/L_1=3$, confined by two parallel hard walls in a planar slit-pore geometry, using a…

Soft Condensed Matter · Physics 2019-03-27 Daniel de las Heras , Yuri Martinez-Raton , Enrique Velasco
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