<i>In situ</i> GISAXS monitoring of Langmuir nanoparticle multilayer degradation processes induced by UV photolysis

Végsö, Karol; Šiffalovič, Peter; Weis, Martin; Jergel, M.; Benkovičová, Monika; Majková, E.; Halahovets, Yuriy; Luby, Š.; Capek, Ignác; Satka, A.

doi:10.1002/pssa.201184275

Cited by 13 publications

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References 12 publications

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“…The twodimensional nanoparticle monolayer has a constant interference function in the z q direction where the modulation visible on the truncation rods is produced solely by the nanoparticle form-factor (Holý, Pietsch et al 1999). At the surface pressure of 26 mN/m, the second nanoparticle layer forms and changes the observed GISAXS pattern (Vegso, Siffalovic et al 2011). The newly formed nanoparticle vertical correlation perpendicular to the Langmuir film plane results in the modulation of the observed truncation rod depicted by the dashed white line in Fig.…”

Section: Nanoparticle Self-assembly At Liquid/air Interfacesmentioning

confidence: 87%

Self-Assembly of Nanoparticles at Solid and Liquid Surfaces

Šiffalovič¹,

Majková²,

Jergel³

et al. 2012

Smart Nanoparticles Technology

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Section: Nanoparticle Self-assembly At Liquid/air Interfacesmentioning

confidence: 87%

Self-Assembly of Nanoparticles at Solid and Liquid Surfaces

Šiffalovič¹,

Majková²,

Jergel³

et al. 2012

Smart Nanoparticles Technology

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“…The twodimensional nanoparticle monolayer has a constant interference function in the z q direction where the modulation visible on the truncation rods is produced solely by the nanoparticle form-factor(Holý, Pietsch et al 1999). At the surface pressure of 26 mN/m, the second nanoparticle layer forms and changes the observed GISAXS pattern(Vegso, Siffalovic et al 2011). The newly formed nanoparticle vertical correlation perpendicular to the Langmuir film plane results in the modulation of the observed truncation rod depicted by the dashed white line in Fig.7b.…”

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confidence: 88%

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2012

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is currently working as Head Director of Education Scheme for Training and Developments (ES4TD) British Company. The company is establishing itself in the market of supporting the scientific research and university education programs development. The company has been set up a few years ago. It is well known in the UK and Middle East and has a lot of university and company partners. Within his duties and commitments in this company, Dr. Hashim is in charge of running the research programs of Environmental Pollution Research Group (EPRG), Nanotechnology Research Group (NTRG) and Materials for Engineering Applications Research Group (MEARG). In these fields of research Dr. Hashim published many papers and research reports. He is the editor of more than six books published by InTech Open Access Publisher and a member of many journal editorial boards. ContentsPreface XIII Part Metallic Nanoparticles 1 Chapter Metallic Nanoparticles Coupled with Photosynthetic Complexes 3 Sebastian Mackowski Chapter Hollow Nano Silica: Synthesis, Characterization and Applications 29 N. Venkatathri Chapter Synthesis of Titanate and Titanium Dioxide Nanotube Thin Films and Their Applications to Biomaterials 41 Mitsunori Yada and Yuko Inoue Chapter Self-Organization of Silver-Core Bimetallic Nanoparticles and Their Application for Catalytic Reaction 67 Kazutaka Hirakawa Chapter Utilization of Nanoparticles Produced by Aqueous-Solution Methods -Formation of Acid Sites on CeO 2 -TiO 2 Composite and 1-D TiO 2 for Dye-Sensitized Solar Cells 93

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“…Colloidal silver nanoparticles dissolved in toluene were used for the SAXS/GISAXS measurements. The nanoparticle synthesis was described elsewhere . Laboratory SAXS measurements of colloidal solutions (Nanostar, Bruker AXS) at the Cu Kα wavelength (0.154 nm) evaluated by the Rayleigh model for spherically shaped nanoparticles with polynomial background provided the mean nanoparticle diameter of 5.8 ± 0.6 nm.…”

Section: Methodsmentioning

confidence: 99%

Application of the paracrystal model to GISAXS analysis of the 3D self-assembled nanoparticle crystals

Végsö

Šiffalovič

Jergel

et al. 2014

Phys. Status Solidi B

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An original diffraction model for the evaluation of the grazing‐incidence small‐angle X‐ray scattering (GISAXS) of the three‐dimensional (3D) supported self‐assembled nanoparticle crystals is presented. The model utilizes the formalism of traditional crystallography that is applied to nanoparticles as scattering entities. The infinite paracrystal concept was adopted in order to include cumulative disorder that is typical for the self‐assembled nanoparticle structures. Azimuthal averaging around a chosen crystallographic direction allows incorporation of texture effects. A transformation of the SAXS paracrystal equations to comply with the GISAXS geometry was employed to describe the scattering process in the limit of the kinematical approximation which facilitates calculations. The model was developed for the face‐centered cubic (FCC) symmetry, however, its extension to any other cubic symmetry is straightforward. The model was tested on a 3D nanoparticle assembly formed on silicon from a dried drop‐cast colloidal solution of monodisperse silver nanoparticles of 5.8 ± 0.6 nm diameter. Presence of the FCC nanoparticle crystal with the [111] texture along the substrate normal was evidenced from evaluation of the synchrotron GISAXS data. The degree of paracrystal disorder is 2.5% and 3.6% parallel and perpendicular to the substrate, respectively, suggesting the anisotropic character of the self‐assembling process. A SAXS measurement of the nanoparticle crystal formed from the same solution in a capillary revealed a randomly oriented FCC structure with a slightly larger paracrystal disorder of 4%. Obviously, different conditions of the nanoparticle crystal formation affect its azimuthal and translational disorder.

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In situ GISAXS monitoring of Langmuir nanoparticle multilayer degradation processes induced by UV photolysis

Cited by 13 publications

References 12 publications

Self-Assembly of Nanoparticles at Solid and Liquid Surfaces

Self-Assembly of Nanoparticles at Solid and Liquid Surfaces

Smart Nanoparticles Technology

Application of the paracrystal model to GISAXS analysis of the 3D self-assembled nanoparticle crystals

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