Application of GISAXS in the Investigation of Three-Dimensional Lattices of Nanostructures

Basioli, Lovro; Salamon, Krešimir; Tkalčević, Marija; Mekterović, Igor; Bernstorff, Sigrid; Mičetić, Maja

doi:10.3390/cryst9090479

Cited by 15 publications

(22 citation statements)

References 20 publications

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“…On the other hand, the smallest network parameters and the highest disorder with respect to the ideal lattice were found for film T2P7 ( Figure 1 c), which also had the most separated and very elongated (almost circular-like) Bragg spots. A detailed description of properties of GISAXS maps from nanowire networks can be found in [ 18 , 19 ].…”

Section: Resultsmentioning

confidence: 99%

3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix

et al. 2020

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Recently demonstrated 3D networks of Ge quantum wires in an alumina matrix, produced by a simple magnetron sputtering deposition enables the realization of nanodevices with tailored conductivity and opto-electrical properties. Their growth and ordering mechanisms as well as possibilities in the design of their structure have not been explored yet. Here, we investigate a broad range of deposition conditions leading to the formation of such quantum wire networks. The resulting structures show an extraordinary tenability of the networks’ geometrical properties. These properties are easily controllable by deposition temperature and Ge concentration. The network’s geometry is shown to retain the same basic structure, adjusting its parameters according to Ge concentration in the material. In addition, the networks’ growth and ordering mechanisms are explained. Furthermore, optical measurements demonstrate that the presented networks show strong confinement effects controllable by their geometrical parameters. Interestingly, energy shift is the largest for the longest quantum wires, and quantum wire length is the main parameter for control of confinement. Presented results demonstrate a method to produce unique materials with designable properties by a simple self-assembled growth method and reveal a self-assembling growth mechanism of novel 3D ordered Ge nanostructures with highly designable optical properties.

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Section: Resultsmentioning

confidence: 99%

3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix

et al. 2020

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“…A more regular network produces stronger and narrower Bragg peaks, so the P1D3 film has a better ordering in this case. More details about the GISAXS maps of such structures are given in [ 43 , 44 , 45 ]. GISAXS is very suitable for the analysis of these structures, as it provides data about nanopore ordering and size properties with excellent statistics.…”

Section: Resultsmentioning

confidence: 99%

“…The GISAXS maps were numerically analyzed using the procedure described in [ 44 , 45 ] in order to obtain the values of the structural parameters of the pores and their arrangement. The results of the analysis are given in Table 2 .…”

Section: Resultsmentioning

confidence: 99%

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Deposition of Thin Alumina Films Containing 3D Ordered Network of Nanopores on Porous Substrates

et al. 2020

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Self-supporting thin films containing nanopores are very promising materials for use for multiple applications, especially in nanofiltration. Here, we present a method for the production of nanomembranes containing a 3D ordered network of nanopores in an alumina matrix, with a diameter of about 1 nm and a body centered tetragonal structure of the network nodes. The material is produced by the magnetron sputtering deposition of a 3D ordered network of Ge nanowires in an alumina matrix, followed by a specific annealing process resulting in the evaporation of Ge. We demonstrate that the films can be easily grown on commercially available alumina substrates containing larger pores with diameters between 20 and 400 nm. We have determined the minimal film thickness needed to entirely cover the larger pores. We believe that these films have the potential for applications in the fields of filtration, separation and sensing.

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“…While in the previous contribution individual nanoscale objects were studied, the remaining two contributions to the special issue show the power of X-ray scattering when it comes to analysis of statistical properties of nanometer sized objects. Lovro Basioli et al [10] show how the grazing incidence small angle X-ray scattering method can be applied to study ordering in arrays of nanoparticles. Shape, size, arrangement properties and their respective statistical distributions can be determined [11].…”

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Investigation of Nanostructures with X-ray Scattering Techniques

Kriegner

Dopita

2019

Crystals

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incidence small angle X-ray scattering, X-ray beam induced current.The structural investigations of nanomaterials motivated by their large variety and diverse set of applications have attracted considerable attention. In particular, the everimproving machinery, both in laboratory and at large scale facilities, together with the methodical improvements available for studying nanostructures ranging from epitaxial nanomaterials, nanocrystalline thin films and coatings, to nanoparticles and colloidal nanocrystals allows us to gain a more detailed understanding of their structural properties. As the structure essentially determines the physical properties of the materials, this advances the possibilities of structural studies and also enables a deeper understanding of the structure to property relationships. In this special issue entitled "Investigation of Nanostructures with X-ray Scattering Techniques" five contributions show the recent progress in various research fields. Contributions cover topics as diverse as neutron scattering on magnetic multilayer films, epitaxial orientation of organic thin films, nanoparticle ordering and chemical composition analysis, and the combination of nanofocused X-ray beams with electrical measurements.In the following we will briefly discuss the contributed papers in order of their submission date. In the first contribution Roland Resel et al.[1] study the epitaxial order of organic thin films. Epitaxy with organic molecules is a rich field due to the wide variety of available organic molecules and their application in organic electronics [2]. An additionally enriching fact is that by the epitaxial growth often metastable, previously unknown, crystal structures of the molecule are found [3]. In their contribution Resel et al. showed that even in cases where the bulk crystal structure prevails during epitaxial growth, the heteroepitaxial orientation of the organic thin film with respect to a single crystalline substrate is a complicated issue on its own. The authors show that for quinquephenyl (5P) films on Cu(110)(2x1)O single crystals the lattice misfit minimization fails to predict the actually occurring orientation of the molecules on the surface. Instead, it is the initial growth stage where the individual molecules fill with their rod-like shape the grooves present in the surface corrugation of the Cu-oxide surface, which determines the epitaxial orientation.Ryuji Maruyama et al.[4] present a study on the magnetization reversal behavior of thin polycrystalline Fe/Si multilayers by polarized neutron scattering and grazing incidence small-angle neutron scattering. The study shows how the magnetic properties of such multilayers differ from the bulk behavior. In particular, the authors show that in contrast to

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Application of GISAXS in the Investigation of Three-Dimensional Lattices of Nanostructures

Cited by 15 publications

References 20 publications

3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix

3D Networks of Ge Quantum Wires in Amorphous Alumina Matrix

Deposition of Thin Alumina Films Containing 3D Ordered Network of Nanopores on Porous Substrates

Investigation of Nanostructures with X-ray Scattering Techniques

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