5131. Packing patterns of silica nanoparticles on surfaces of armored polystyrene latex particlesSara Fortuna, Catheline A. L. Colard, Stefan A. F. Bon, Alessandro Troisi, 2009, original scientific article Abstract: Fascinating packing patterns of identical spherical and discotic objects on curved surfaces occur readily in nature and science. Examples include C60 fullerenes,(1, 2)13-atom cuboctahedral metal clusters,(3) and S-layer proteins on outer cell membranes.(4) Numerous situations with surface-arranged objects of variable size also exist, such as the lenses on insect eyes, biomineralized shells on coccolithophorids,(5) and solid-stabilized emulsion droplets(6) and bubbles.(7) The influence of size variations on these packing patterns, however, is studied sparsely. Here we investigate the packing of nanosized silica particles on the surface of polystyrene latex particles fabricated by Pickering miniemulsion polymerization of submicrometer-sized armored monomer droplets. We are able to rationalize the experimental morphology and the nearest-neighbor distribution with the help of Monte Carlo simulations. We show that broadening of the nanoparticle size distribution has pronounced effects on the self-assembled equilibrium packing structures, with original 12-point dislocations or grain-boundary scars gradually fading out.
Keywords: packing patterns, silica, simulation, Monte Carlo, order, disorder, transition, armored particles, nanoparticles, Pickering emulsion
Published in RUNG: 10.10.2016; Views: 4729; Downloads: 0
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5135. Hematite-based nanocomposites for light-activated applications: Synergistic role of TiO2 and Au introductionGiorgio Carraro, Chiara Maccato, Alberto Gasparotto, Michael E.A Warwick, Cinzia Sada, Stuart Turner, Antonio Bazzo, Teresa Andreu, Olena Pliekhova, Dorota Korte, Urška Lavrenčič Štangar, Gustaaf Van Tendeloo, Joan Ramón Morante, Davide Barreca, 2017, original scientific article Keywords: Fe2O3-TiO2-Au, Plasma enhanced-chemical vapor deposition, Sputtering, Photocatalysis
Published in RUNG: 10.10.2016; Views: 5277; Downloads: 0
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5136. Problem interpretacije in recepcije Prešernove pesmi PevcuZoran Božič, 2014, independent scientific component part or a chapter in a monograph Abstract: Pesem Pevcu je eden od vrhov Prešernove umetniške besede, a številni razlagalci so imeli težave s skrajnim pesimizmom te pesmi. V skladu s prepričanjem, da je treba v prvem nacionalnem pesniku prepoznavati predvsem »bistrovidniga orla«, so interpreti ta pesimizem skušali prevrednotiti s kultom pesniškega poslanstva. Empirični preizkus recepcije je pokazal, da struktura pesmi dejansko omogoča različno, tudi povsem nelogično razumevanje retoričnih vprašanj, po vsej verjetnosti zaradi psihološkega vpliva zanikanja.
Keywords: Prešeren, Pevcu, interpretacija, recepcija, empirični preizkus
Published in RUNG: 07.10.2016; Views: 5712; Downloads: 260
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5138. A nanomesh scaffold for supramolecular nanowire optoelectronic devicesLei Zhang, Egon Pavlica, Gvido Bratina, 2016, original scientific article Abstract: Supramolecular organic nanowires are ideal nanostructures for optoelectronics because they exhibit both efficient exciton generation as a result of their high absorption coefficient and remarkable light sensitivity due to the low number of grain boundaries and high surface-to-volume ratio. To harvest photocurrent directly from supramolecular nanowires it is necessary to wire them up with nanoelectrodes that possess different work functions. However, devising strategies that can connect multiple nanowires at the same time has been challenging. Here, we report a general approach to simultaneously integrate hundreds of supramolecular nanowires of N,N′-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) in a hexagonal nanomesh scaffold with asymmetric nanoelectrodes. Optimized PTCDI-C8 nanowire photovoltaic devices exhibit a signal-to-noise ratio approaching 107, a photoresponse time as fast as 10 ns and an external quantum efficiency >55%. This nanomesh scaffold can also be used to investigate the fundamental mechanism of photoelectrical conversion in other low-dimensional semiconducting nanostructures.
Keywords: fotodetektor, organski polprevodnik, fotoprevodnost, organski kristal, elektronske komponente, nanožice
Published in RUNG: 05.10.2016; Views: 5451; Downloads: 0
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5140. Literarni sprehod po Gorici : Strokovno vodenje, literarna zgodovinaAna Toroš, other performed works Abstract: Na literarnem sprehodu po Gorici se bomo v domišljiji spustili v preteklost, poslušali pridigo Primoža Trubarja in začutili uporniški duh tolminskih puntarjev na Goriškem gradu, ki je ovekovečen na straneh slovenske literature. Nato bomo pokukali v ulico, kjer sta se srečala Simon Gregorčič in mladi Alojz Gradnik, ter prisluhnili pesniški izpovedi Ljubke Šorli na Travniku. Sprehod bomo zaključili z ogledom Slovenske knjižnice Damir Feigel in Trgovskega doma v Gorici.
Keywords: Noč raziskovalcev 2016, Raziskovalni center za humanistiko
Published in RUNG: 04.10.2016; Views: 3478; Downloads: 0 |
