Dr
Eva Crosas
(ALBA Synchrotron Light Source)
16/06/2015, 17:40
VII AUSE Congress
Posters
Radiation damage is a serious problem in synchrotron light sources, limiting the quality of the collected data. This issue is critical for structural biology techniques, like Biological Small Angle X-ray Scattering (BioSAXS), and Macromolecular Crystallography (MX). Common strategies to reduce radiation damage in SAXS are flowing the sample through the beam, or adding small molecules such as...
Prof.
J.J. Suñol
(University of Girona)
16/06/2015, 17:40
VII AUSE Congress
Posters
Heusler based magnetic shape memory alloys exhibit functional properties as magnetocaloric effect, high magnetoresistance or shape memory behavior; probably due to the existence of martensitic phase transition with a strong magneto-structural coupling. These alloys are candidates for applications as sensors, actuators or magnetic coolers. In this work, the crystal structures of the...
Dr
HARI BABU VASILI
(CELLS - Divisió Experiments - Soft X Rays - ALBA Synchrotron Light Source, Barcelona)
16/06/2015, 17:40
VII AUSE Congress
Posters
Investigation of the epitaxial thin films of insulating ferromagnets (cobalt-ferrites) has received a renewed attention due to its central role in spintronic devices involving spin Hall effect [1]. The spin magnetoresistance (SMR) is generally known to depend upon the film orientation and consequently the chemical nature of the exposed film surface. Among other recent works on cobalt-ferrite...
Dr
Jordi Fraxedas
(Institut Catala de Nanociencia i Nanotecnologia (ICN2), Campus UAB, 08193 Bellaterra, Barcelona, Spain)
16/06/2015, 17:40
VII AUSE Congress
Posters
We have characterized the buried interfaces of oxidized PS-OH layers grafted on silicon substrates with high kinetic energy photoemission at the BESSY II HIKE endstation (Helmholtz-Zentrum Berlin für Materialien und Energie). PS-OH layers (4.7 nm thick) have been prepared by spin-coating and oxidized using gold-coated PDMS stamps, replicating DVD patterns. The oxidation was achieved by...
Miguel Angel Valbuena
(Institut Català de Nanociència i Nanotecnologia (ICN2))
16/06/2015, 17:40
VII AUSE Congress
Posters
The study of supported adatoms, films or more complex nanostructures by X-ray absorption and circular magnetic dichroism (XMCD) requires their in-situ growth in ultra-high vacuum (UHV), and hence must be followed by some means of structural characterization that can be correlated to the spectroscopic data. Scanning tunneling microscopy (STM) provides structural information of surfaces with...
Dr
Oriol Vallcorba
(ALBA-CELLS)
16/06/2015, 17:40
VII AUSE Congress
Posters
Synchrotron through-the-substrate microdiffraction (tts-µXRD) allows the study of polycrystalline samples included in polished thin sections [1]. In a tts-µXRD experiment the primary beam passes first through the glass substrate before reaching the thin section where the target material is embedded. This technique has now been extended to the study of crystal microvolumes [2]. A polished thin...
Dr
Xavier Alcobé
(Universitat de Barcelona)
16/06/2015, 17:40
VII AUSE Congress
Posters
Although it has been traditionally suggested that cocrystals show a lower tendency to polymorphism than monocomponent crystals, the increasing number of polymorphic cocrystals described is recently questioning that old statement. The impact that this phenomenon has on the pharmaceutical industry is particularly relevant since affects to both intellectual property and formulation of new drugs....
Mr
Albert Castellví
(Cells)
16/06/2015, 17:40
VII AUSE Congress
Posters
Biological material, such as proteins, is highly sensitive to radiation damage (RD) coming from the intense ionizing radiation, which causes severe structural and functional damage to organic matter either directly by the generated free electrons or indirectly by formation of reactive oxygen species (free radicals). Synchrotron radiation is a suitable tool to both generate the radiation and...
Dr
Gloria Subias-Peruga
(ICMA, CSIC-Universidad de Zaragoza)
16/06/2015, 17:40
VII AUSE Congress
Posters
The study of materials is of central significance for progress in science and technology. At present the focus is on materials with reduced dimensions such as nano-structures or molecule based systems. These materials offer new tunable properties. In order use them in devices a deep understanding of the properties of the materials on the atomic scale is a prerequisite. Non-destructive...
Ms
Estibalitz Fernandez
(Institute of Advanced Chemistry of Catalonia (IQAC-CSIC))
16/06/2015, 17:40
VII AUSE Congress
Posters
Infrared radiation (IR) penetrates the epidermal and dermal layers of skin increasing temperature significantly [1], and consequently it can damage both skin compartments. Collagen is located in the dermis and accounts approximately 75% of total dry weight of skin providing integrity of this tissue [2, 3]. This protein could be damaged at high temperatures coming from IR exposure, which can...
Mr
Alberto Rodríguez Gómez
(CSIC-Universidad de Sevilla), Prof.
Alfonso Caballero Martínez
(CSIC-Universidad de Sevilla), Dr
Rosa Maria Pereñiguez Rodriguez
(CSIC-Universidad de Sevilla)
16/06/2015, 17:40
VII AUSE Congress
Posters
The study of Supported nickel nanoparticles systems has gained interest in the last years because of its high performance in dry reforming of methane (DRM) to produce syngas, used for several liquid hydrocarbon production (Fischer-Tropsch processes), or to obtain hydrogen, by purification of syngas, promising to become one of the major sources of energy in the near future. Coke formation by...
Dr
Javier Herrero
(ALBA-CELLS)
16/06/2015, 17:40
VII AUSE Congress
Posters
The induction of magnetic frustration and complex magnetic orders by tuning synthesis thus breaking the spatial inversion symmetry is an effective way of producing multiferroic (MF) and magnetoelectric (ME) materials. The (Mn,Co)WO4 family are reference models for the study of the mutual interaction between spins and polar orders. Co favors a strong competition between its magnetocrystalline...
Mrs
Perez-Rodriguez Ana
(ICMAB)
16/06/2015, 17:40
VII AUSE Congress
Posters
Bulk heterojunctions (BHJs), in which electron–donor and electron–acceptor material are blended together from a common solution, represent the most promising device structure for high-efficiency organic solar cells. It is has been shown that BHJs solar cells can reach higher efficiencies and fill factors by controlling the morphology applying solvent vapor annealing treatments (SVA) [1]. In...
Dr
Javier Blasco
(Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza)
16/06/2015, 17:40
VII AUSE Congress
Posters
High pressure angle-dispersive x-ray diffraction measurements on CoxFe2-xO4 (x=1, 1.5, 1.75) spinels have been performed at the beam line MSPD in the ALBA synchrotron [1]. The patterns were collected at room temperature between ~0 and 34 GPa with an incident monochromatic wavelength of 0.4246 Å. Samples were loaded in 130 microns diameter holes of 40 microns thick stainless steel gaskets in...
Prof.
Ana Camara-Artigas
(Department of Chemistry and Physics, Research Centre for Agricultural and Food Biotechnology (BITAL), University of Almería, Agrifood Campus of International Excellence (ceiA3), 04120 Almería, SPAIN)
16/06/2015, 17:40
VII AUSE Congress
Posters
Last decade, advances in synchrotron facilities have allowed an exponential increase on the number of protein structures solved at atomic resolution. Last year, the Protein Data Bank reached the 100k structures but less than 10 % of these can be considered “atomic-resolution structures”. These structures show more detailed and accurate information of the proteins. The presence of alternate...
106.
In situ High Pressure Powder Diffraction study of proton conductors based on metal phosphanates
Ms
Antonia Montserrat Bazaga García
(PhD Student)
16/06/2015, 17:40
VII AUSE Congress
Posters
Soft Porous Metal Organic frameworks (MOFs) are referred to as a class of coordination polymers that exhibit structural flexibility in response to guest interactions or physical stimuli [1]. By combining softness and regularity, the responsive crystalline frameworks show, for instance, unique mechanisms of separation and storage of gases.
Here we report the effects of high pressures of...
Dr
Marta García Maté
(Universidad de Málaga)
16/06/2015, 17:40
VII AUSE Congress
Posters
Cement based binders are building materials of worldwide importance. Since these samples are very complex, the knowledge/control of their mineralogical composition are essential to design and predict materials with specific/improved performance [1]. Rietveld quantitative phase analysis (RQPA) allows the quantification of crystalline phases and, when combined with specific methodologies, as the...
Dr
Angeles G. De la Torre
(Universidad de Malaga)
16/06/2015, 17:40
VII AUSE Congress
Posters
The ferrite phase, C4AF in cement nomenclature, is the major iron-containing phase in Ordinary Portland Cement (OPC) and in iron rich belite calcium sulfoaluminate cements. The term “ferrite” usually refers to a solid solution with a wide range of composition with the general formula Ca2(AlyFe2−y)O5, where y can vary from 0 to about 1.33[1]. In cement chemistry the ideal composition C4AF, is...
Prof.
Jose Enrique Ortega
(Universidad del País Vasco)
16/06/2015, 17:40
VII AUSE Congress
Posters
High-temperature deposition of rare-earths (RE) on noble metal surfaces, such as Au(111), gives rise to stable, REAu2 mono and bilayers of high crystalline quality. These surface alloys exhibit characteristic, long-range moiré patterns that can be utilized as growth templates [1]. In fact, cobalt deposition on such pre-patterned REAu2/Au(111) surfaces leads to self-organization of Co...
Dr
Trinitat Pradell
(Universitat Politècnica de Catalunya)
16/06/2015, 17:40
VII AUSE Congress
Posters
A grisaille is a brown-blackish paint applied onto the inner surface of stained glass to draw the contours and details of the figures and producethe effect of shades and volumes. Grisailles were traditionally made of finely ground oxides of iron but also of copper, zinc, lead or manganese mixed with a flux such as lead ground glass and a binder and fixed onto the flat glass by firing. The...
Mr
Francisco J. Acosta-Reyes
(Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, Diagonal 647, Barcelona, E-08028, Spain.)
16/06/2015, 17:40
VII AUSE Congress
Posters
AT-rich DNA is mainly found in non-coding regions in eukaryotes, it represents a large portion of genomes. It is known that some of these non-coding regions play an important role in regulation, transcription and signaling. Some proteins interact with AT-rich DNA as architectural proteins that affect cellular functions by modulating chromatin structure. Moreover DNA of several pathogens is...
Dr
Gaspar González-Doncel
(CENIM, C.S.I.C.), Dr
Ricardo Fernandez Serrano
(CENIM)
16/06/2015, 17:40
VII AUSE Congress
Posters
A procedure to separate the (average) microscopic residual stress, m-RS, from the total residual stress (sum of the macroscopic residual stress, M-RS, and the m-RS) in monolithic (one-phase) alloys from measurements conducted by synchrotron radiation diffraction is proposed. The method focuses on stress equilibrium at different scales and the assumption that grains with different orientations...
Dr
Gonzalo Santoro
(Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC)
16/06/2015, 17:40
VII AUSE Congress
Posters
Crazes constitute one of the most common failure mechanisms in polymers. Since crazes act as fracture precursors, they provoke severe impairment of the mechanical properties of the material. Thus, a deeper understanding of chain rearrangement occurring inside crazes is of fundamental and practical importance.
In this work, we have applied synchrotron infrared microspectroscopy (SIRMS) and...
Dr
Ricardo Torres
(Instituto de Ciencia de Materiales de Madrid, CSIC)
16/06/2015, 17:40
VII AUSE Congress
Posters
A series of multilayer thin films composed of nanometric hexagonal carbon and boron nitride sublayers was grown on silicon substrates by ion beam assisted deposition (IBAD), following the method described elsewhere [1]. The period of the multilayers was varied between 3 and 40 nm in the whole series of samples. Carbon was deposited always with c-axis perpendicular to the substrate surface...
Mr
Jose Cascales
(Instituto de Ciencia de Materiales de Madrid, CSIC)
16/06/2015, 17:40
VII AUSE Congress
Posters
We present a study of the texture and crystalline perfection of hexagonal boron nitride (h-BN) films based on x-ray absorption near edge structure (XANES) and x-ray photoemission (XPS) spectroscopies. The measurements were conducted at BESSY synchrotron facility using beamline PM4. The synchrotron results are also compared with the more conventional infrared and Raman...
Mr
Marc González Cuxart
(ICN)
16/06/2015, 17:40
VII AUSE Congress
Posters
Mechanical exfoliation of highly oriented pyrolytic graphite (HOPG) has been the most
common method of producing single layers of graphene. However, the lateral dimensions of
monolayer samples are typically limited to the micro-scale. Since large area graphene films on
insulating substrates are required for practical applications, several techniques have been
explored such as chemical...
Maria Angels Subirana
(Universitat Autonoma de Barcelona- ALBA synchrotron)
16/06/2015, 17:40
VII AUSE Congress
Posters
Selenium is an essential micronutrient for humans and it has been shown to be antioxidant, anti-tumoral, anti-viral and to contribute in the treatment of cardiovascular diseases. Therefore, appropriate selenium intake can benefit human health, but millions of people worldwide consume it at levels below the body’s need for the correct expression of selenoproteins.
Se-poor soils around the...
91.
Semiconducting polymer nanostructures studied by a combination of synchrotron techniques and AFM
Mr
Álvaro Rodríguez Rodríguez
(Instituto de Estructura de la Materia IEM-CSIC)
16/06/2015, 17:40
VII AUSE Congress
Posters
Conjugated polymers have been proposed for application in a wide variety of next generation technologies including displays, solid-state lighting, transistors and organic photovoltaic devices. In organic photovoltaics (OPVs), the dissociated free charges (electrons and holes) are generated at the interface between the donor (e-donor) and acceptor (e-acceptor) phases, and then transported to...
Dr
Eva Crosas
(ALBA Synchrotron Light Source)
16/06/2015, 17:40
VII AUSE Congress
Posters
Each chromosome contains a single DNA molecule that is associated with histone proteins and forms a long filament containing many nucleosomes (the dimensions of the nucleosome core particle are shown in Fig. 1a). During mitosis, this chromatin filament is densely packed into metaphase chromosomes. TEM images of partially denatured chromosomes obtained using different procedures showed that...
Mrs
Ana Gamarra
(UPC)
16/06/2015, 17:40
VII AUSE Congress
Posters
Surfactants based on tetraalkylphosphonium salts have recently become the focus of a good number of investigations because they offer superior properties when compared with tetraalkylammonium surfactants [1], such as much higher thermal stability. Since the structure of phosphonium surfactants still remains hardly explored [2], we have undertaken the structural study of a series of...
Prof.
Fernando Rodriguez
(Universidad de Cantabria)
16/06/2015, 17:40
VII AUSE Congress
Posters
Mixed organic/inorganic crystals as [(CH3)4N]FeCl4 (Ref. 1) are receiving considerable attention due to their simple structure consisting of organic (CH3)4N+ and inorganic FeCl4- tetrahedra, being precursors of magnetic ionic liquids with FeCl4- as the most common anion (Ref.2). The incorporation of magnetic anions (as FeCl4-) makes them attractive for modifying their thermodynamic properties...
Dr
Fernando Gil-Ortiz
(ALBA Synchrotron Radiation Facility, Ctra. BP1413 km 3.3, 08290 Cerdanyola del Vallès, Barcelona, SPAIN)
16/06/2015, 17:40
VII AUSE Congress
Posters
NAD+ is a central cofactor that plays important roles in cellular metabolism and energy production in all living cells. Nicotinamidases are essential enzymes for the recycling of nicotinamide into NAD+ in most prokaryotes and most of lower eukaryotes, but not in mammals. These enzymes convert nicotinamide to nicotinic acid and its significance for nicotinamide salvage and for NAD+ homeostasis...
Dr
Trinitat Pradell
(Universitat Politècnica de Catalunya)
16/06/2015, 17:40
VII AUSE Congress
Posters
Baroque artists applied metal foils on altarpieces to produce colourful sparkling and shining light effects. Additionally, pigments or dyes were mixed with oils and resins and applied over the silver or gold foils to create also colour shades. However, the effect intended by the artist appears distorted by the alterations occurred over the years resulting from the chemical reactions among the...
Dr
Núria Cinca
(Centre de Projecció Tèrmica (CPT). Universitat de Barcelona. Martí i Franques 1, E-08028, Barcelona.)
16/06/2015, 17:40
VII AUSE Congress
Posters
In this study, time resolved X-ray scattering using a synchrotron X-ray source has been used to gain insight of time-temperature atomic ordering of an intermetallic Fe40Al ball-milled powder with the aim to estrapolate these results as an explanation of rapid ordering processes occurring during thermal spray coating deposition. Interestingly, present results show that in the range between 400...
Miguel Angel Valbuena
(Departamento de Física de la Materia Condensada. Universidad Autónoma de Madrid)
16/06/2015, 17:40
VII AUSE Congress
Posters
A vicinal surface with monoatomic steps is an interesting example of quasi one-dimensional nanostructured system. Vicinal surfaces of noble metals have been an active field of research in the past years because they offer a natural playground to investigate the behavior of electronic surface states in low dimensional nanostructured systems. Group II metals like Be exhibit several prominent...
Dr
Daniel Fulla Marsa
(ALBA)
16/06/2015, 17:40
VII AUSE Congress
Posters
BL13-XALOC is the only operating macromolecular crystallography beamline at the 3 GeV ALBA Synchrotron near Barcelona (Spain) and started user operation on July 2012. It receives light from an in-vacuum undulator and it is fully tunable from 5 to 22 keV which allows anomalous diffraction-dependent experiments. The optical design consists of a Si(111) channel-cut crystal monochromator and a...
