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Author(s) of this paper may load this reprint on their own web site or institutional repository provided that this cover page is retained. Republication of this article or its storage in electronic databases other than as specified above is not permitted without prior permission in writing from the IUCr. Many research topics in condensed matter research,(More)
Ferroelectricity in finite-dimensional systems continues to arouse interest, motivated by predictions of vortex polarization states and the utility of ferroelectric nanomaterials in memory devices, actuators and other applications. Critical to these areas of research are the nanoscale polarization structure and scaling limit of ferroelectric order, which(More)
Evidence is presented that nanosized particles of crystals do not necessarily adopt a periodic atomic structure as their bulk counterparts do and/or as predicted by theory. As an example, 1.6-nm Au particles grown inside a dendrimeric host are studied and found to possess a heavily disordered, metallic glass-type structure. The nanoparticle's structure(More)
Experimental data of arrays " Andyrchy " and " Carpet-2 " of Baksan Neutrino Observatory (Institute for Nuclear Research), obtained in the regime of a detection of the single cosmic-ray component, are used for a search of the bursts of cosmic gamma rays from evaporating primordial black holes. Different theoretical models of the evaporation process are used(More)
Thiol-functionalized mesostructured silica with anhydrous compositions of (SiO(2))(1)(-)(x)()(LSiO(1.5))(x)(), where L is a mercaptopropyl group and x is the fraction of functionalized framework silicon centers, are effective trapping agents for the removal of mercuric(II) ions from water. In the present work, we investigate the mercury-binding mechanism(More)
With current technology moving rapidly toward smaller scales nanometer-size materials, hereafter called nanometer-size particles (NPs), are being produced in increasing numbers and explored for various useful applications ranging from photonics and catalysis to detoxification of wastewater and cancer therapy. Nature also is a prolific producer of useful(More)
A quantitative knowledge of atomic scale structure is a prerequisite to understanding material properties in general. However, the atomic structures of nanoparticles and nanostructured materials are not accessible by conventional methods used on crystalline materials because, by their very nature, nanostructured materials are not periodically long-range(More)
22 Sep 2005 Swift-BAT triggered and located GRB050922C. The light curve shows the intense broad peak with T 90 of (5 ± 1) s. The Nordic Optical Telescope has obtained spectra of the afterglow with several absorption features corresponding to a redshift of z = 2.17 ± 0.03. Observation of optical transient of GRB050922C was carried out in the R-band with the(More)
Solving the atomic scale structure of nanoparticles is an enormously difficult proposition due to their small size and structural complexity. Furthermore, our existing tools of conventional crystallography don't work on the nanoscale. The NSF funded NIRT-Structure of Nanocrystals is addressing this need by developing and applying advanced scattering methods(More)
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