Schein der Freiheit

Was ist der Status von Kunst in einer Gegenwart, in der avantgardistische Kunst nicht mehr gesellschaftsgefährdend, sondern gesellschaftsstützend ist, in der sie darum »unter dem freundlichen Lächeln der Mächtigen und dem gesitteten Wohlwollen des staatserhaltenden Publikums« blüht (Améry 2007: 590)? Fast scheint es unter diesen Umständen aussichtslos, noch an der Konzeption ästhetischer Theorie Theodor W. Adornos festhalten zu wollen, die aus dieser Perspektive vielfach als veraltet angesehen wird. Dieser Text soll dennoch dem Versuch gewidmet sein, aufzuweisen, dass diese ästhetische Theorie so unverändert aktuell ist, wie die Verhältnisse, denen sie sich verdankt

Friday I'm in love. Über die merkwürdige Erfahrung der Unwirklichkeit der Freizeit

Was bleibt von all den Feiern, Partys und Konzerten? Was machen wir dort? Muss davon etwas bleiben oder ist das das Leben selbst, in dem nur der Moment zählt? Oder ist es der immer scheiternde Versuch eines echten Lebens neben dem wirklichen Leben? Wissen wir es nicht, aber tun es

Inner metric properties of 2-dimensional semi-algebraic sets

Sin resume

The Agricultural Argument and Sami Reindeer Breeding Rights : reflections on Legal Philosophy in the Arctic

The paper is to shed the light on the agricultural agreement in the light of Sami reindeer breeding rights. These are reflections on legal philosophy in the Arctic.publishedVersio

Neurofeedback von langsamen Hirnpotentialen bei Kindern mit chronisch motorischen Tic-Störungen

Untersuchung der CNV bei Kindern mit chronisch motorischen Tic-Störungen, sowie Versuch der Regulation der CNV mittels Neurofeedbac

WS2 Nanotubes, 2D Nanomeshes, and 2D In-Plane Films Through One Single Chemical Vapor Deposition route

We demonstrate a versatile, catalyst free chemical vapor deposition process on insulating substrates capable of producing in one single stream one-dimensional (1D) WO3- x suboxides leading to a wide range of substrate-supported 2H-WS2 polymorphs: a tunable class of out-of-plane (of the substrate) nanophases, with 1D nanotubes and a pure WS2, two-dimensional (2D) nanomesh (defined as a network of webbed, micron-size, few-layer 2D sheets) at its extremes; and in-plane (parallel to the substrate) mono- and few-layer 2D domains. This entails a two-stage approach in which the 2WO3 + 7S → 2WS2 + 3SO2 reaction is intentionally decoupled. First, various morphologies of nanowires or nanorods of high stoichiometry, WO2.92/WO2.9 suboxides (belonging to the class of Magnéli phases) were formed, followed by their sulfurization to undergo reduction to the aforementioned WS2 polymorphs. The continuous transition of WS2 from nanotubes to the out-of-plane 2D nanomesh, via intermediary, mixed 1D-2D phases, delivers tunable functional properties, for example, linear and nonlinear optical properties, such as reflectivity (linked to optical excitations in the material), and second harmonic generation (SHG) and onset of saturable absorption. The SHG effect is very strong across the entire tunable class of WS2 nanomaterials, weakest in nanotubes, and strongest in the 2D nanomesh. Furthermore, a mechanism via suboxide (WO3- x) intermediate as a possible path to 2D domain growth is demonstrated. 2D, in-plane WS2 domains grow via "self-seeding and feeding" where short WO2.92/WO2.9 nanorods provide both the nucleation sites and the precursor feedstock. Understanding the reaction path (here, in the W-O-S space) is an emerging approach toward controlling the nucleation, growth, and morphology of 2D domains and films of transition-metal dichalcogenides.</p

Recombinant hirudin for extended aortic surgery in patients with heparin-induced thrombocytopenia

AbstractJ Thorac Cardiovasc Surg 1999;118:191-

Second harmonic spectroscopy of surface lattice resonances

Because of their large figures of merit, surface lattice resonances (SLRs) in metal nanoparticle arrays are very promising for chemical and biomolecular sensing in both liquid and gas media. SLRs are sensitive to refractive index changes both near the surface of the nanoparticles (surface sensitivity) and in the volume between them (bulk sensitivity). Because of its intrinsic surface-sensitivity and a power law dependence on electric fields, second harmonic generation (SHG) spectroscopy can improve upon both the surface and volume sensitivities of SLRs. In this report on SHG spectroscopy of plasmonic nanoparticles, we show that the SHG signal is greatly increased (up to 450 times) by the SLRs. We also demonstrate very narrow resonances in SHG intensity (∼5 nm fwhm). We illustrate how the SHG resonances are highly sensitive to SLRs by varying the fundamental wavelength, angle of incidence, nanoparticle material, and lattice constant of the arrays. Finally, we identify an SHG resonance (10 nm fwhm) that is electric dipole forbidden and can be attributed to higher-order multipoles, enhanced by the strong near-fields of SLRs. Our results open up new and very promising avenues for chemical and biomolecular sensing based on SHG spectroscopy of SLRs.</p