991. Splay nematic phaseerAlenka Mertelj, Luka Cmok, Nerea Sebastián Ugarteche, Richard J. Mandle, Rachel R. Parker, Adrian C. Whitwood, J. W. Goodby, Martin Čopič, 2018, original scientific article Published in DiRROS: 15.09.2025; Views: 354; Downloads: 90
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994. Antiferroelectric order in nematic liquids : flexoelectricity versus electrostaticsPeter Medle Rupnik, Ema Hanžel, Matija Lovšin, Natan Osterman, Calum Jordan Gibb, Richard J. Mandle, Nerea Sebastián Ugarteche, Alenka Mertelj, 2025, original scientific article Abstract: The recent discovery of ferroelectric nematic liquid crystalline phases marks a major breakthrough in soft matter research. An intermediate phase, often observed between the nonpolar and the ferroelectric nematic phase, shows a distinct antiferroelectric response to electric fields. However, its structure and formation mechanisms remain debated, with flexoelectric and electrostatics effects proposed as competing mechanisms. By controlling the magnitude of electrostatic forces through ion addition in two representative ferroelectric nematic materials, it is shown that the primary mechanism for the emergence of antiferroelectric order is the flexoelectric coupling between electric polarization and splay deformation of the nematic director. The addition of ions significantly expands the temperature range over which the antiferroelectric phase is observed, with this range increasing with increasing ion concentration. Polarizing optical microscopy studies and second harmonic generation (SHG) microscopy reveal the splayed structure modulated in 2D, while SHG interferometry confirms its antiferroelectric character. The model previously used to describe pretransitional behavior is extended by incorporating the electrostatic contribution of ions. The model shows qualitative agreement with the experiments, accurately reproducing the phase diagram and temperature-dependent evolution of the modulation period of the observed structure.
Keywords: ferroelectric nematic liquids, flexoelectricity, antiferroelectric order
Published in DiRROS: 15.09.2025; Views: 296; Downloads: 130
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995. Pregled domačih in tujih virov s področja kontrole kakovosti v gradbeništvu / predlog meril in kazalnikov za kakovostno projektiranje in gradnjo gozdnih cest ter vlak : poročilo izsledka 3.2.Jan Mihelič, 2023, treatise, preliminary study, study Keywords: gozdne vlake, gozdne ceste, hudourniki, varstvo pred poplavami, gozdno gradbeništvo, odvodnjavanje
Published in DiRROS: 12.09.2025; Views: 404; Downloads: 89
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996. Smernice in ukrepi za gradnjo in vzdrževanje gozdnih prometnic v hudourniških območjih : poročilo izsledka 3.1.3.Jaša Saražin, Aleš Klabus, 2025, treatise, preliminary study, study Keywords: gozdne vlake, gozdne ceste, hudourniki, varstvo pred poplavami, gozdno gradbeništvo, odvodnjavanje
Published in DiRROS: 12.09.2025; Views: 421; Downloads: 143
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997. Smernice in ukrepi za zmanjšanje nevarnosti lesnega plavja v hudourniških območjih : končno poročilo izsledka 3.1.2Matjaž Dovečar, Jaša Saražin, 2025, treatise, preliminary study, study Keywords: lesno plavje, ukrepi, hudourniki, varstvo pred poplavami, gozdno gradbeništvo
Published in DiRROS: 12.09.2025; Views: 366; Downloads: 158
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998. Atomic scale visualization of vibrational modes in armchair graphene nanoribbonStefan Šćepanović, Diego López-Alcalá, José J. Baldoví, Alexander Vahl, Abdou Hassanien, 2025, original scientific article Abstract: Using scanning tunneling microscopy (STM) and inelastic tunneling spectroscopy, the low-frequency vibrational modes of a 7-atom wide armchair graphene nanoribbon (7-AGNR) is mapped. The inelastic tunneling channel is enhanced over the elastic one by a covalently bonded 7-AGNR to the apex of an STM tip. This setup has led to resonant inelastic tunneling between vibrational states of supported 7-GNR on Au(111) substrate and the states of the functionalized STM tip. The low-energy spectra reveal two localized peaks at the armchair edges with energies at ±14 and ±30 mV. The peaks are assigned to twice the energies of longitudinal compressive and shear-like modes of 7-AGNR, respectively. Remarkably, the well-separated peaks evolve rapidly into one broader peak toward the bulk of the ribbon due to scattering from substrate interactions. This suggests that edge state phonons are uniquely protected from the microenvironment and may have a profound effect on the transport properties of GNR devices.
Keywords: scanning tunneling microscopy, inelastic tunneling spectroscopy, armchair graphene nanoribbons
Published in DiRROS: 12.09.2025; Views: 267; Downloads: 125
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999. Joseph Roth in SlovenciMira Miladinović Zalaznik, 2024, original scientific article Abstract: Študija, napisana na podlagi primarnih in sekundarnih virov ter spominov, obravnava tista dela avstrijskega pisatelja Josepha Rotha, ki tematizirajo Slovence. V prvi vrsti gre za romana Radetzkyjeva koračnica (1932) in Kapucinska grobnica (1938), kjer so Slovenci kot osrednji literarni liki prvič vstopili v neslovensko svetovno književnost in to skozi velika vrata. V podporo adekvatnejši analizi literarnih likov upošteva tudi Rothove feljtone, objavljene v nemškem dnevniku Frankfurter Zeitung, kjer Roth poroča o južnih Slovanih, njihovi politiki in državi, ki jo označi za eno naslednic propadle Avstro-Ogrske na Balkanu. Avtorica se osredinja na Rothove slovenske like in njihov sprejem pri naših bralcih, pri čemer s primeri iz Rothovih feljtonov in siceršnjih avtorjevih zapisanih izjav dokazuje, da je Roth dobro poznal tako zgodovino kakor tudi zakonitosti literarnega ustvarjanja. Fikcija do neke mere temelji na resničnosti, vendar deluje po estetskih učinkih, ki z le-to niso vedno kompatibilni.
Keywords: Radetzkyjeva koračnica, Kapucinska grobnica, Habsburška monarhija, habsburški mit, feljton
Published in DiRROS: 11.09.2025; Views: 325; Downloads: 143
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1000. Hermeneutik der Zukunft als Hermeneutik der technischen ZukunftŽeljko Radinković, 2025, original scientific article Abstract: Hermeneutics of the Future as Hermeneutics of the technological Future
The text discusses the challenges that philosophy of technology increasingly faces due to the emergence of new, the so-called transclassical techniques. This applies particularly to the field of technology assessment, where a “hermeneutic turn” is emerging, within which communicative practices and strategies for understanding how to deal with new technologies are being developed, rather than consequentialist, prognostic, and scenario-based approaches. Furthermore, the contribution first highlights the diversity of hermeneutic approaches and then discusses the guiding concept of a “hermeneutics of the future” in the philosophy of technology as the constitutive primacy of the future in the existential sense.
Keywords: hermeneutics, future, technology, understanding, philosophy of technology
Published in DiRROS: 11.09.2025; Views: 264; Downloads: 120
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