Optical plasmons of individual gold nanosponges. - In: ACS photonics, ISSN 2330-4022, Bd. 2 (2015), 10, S. 1436-1442
The search for novel plasmonic nanostructures, which can act simultaneously as optical detectors and stimulators, is crucial for many applications in the fields of biosensing, electro- and photocatalysis, electrochemistry, and biofuel generation. In most of these areas, a large surface-to-volume ratio, as well as high density of active surface sites, is desirable. We investigate sponge-like, that is, fully porous, nanoparticles, called nanosponges, where both the gold and the air phase are fully percolated in three dimensions. We correlate, on a single nanoparticle basis, their optical scattering spectra (using dark field microscopy) with their individual morphology (using electron microscopy). We find that the scattering spectra of nanosponges depend only weakly on their size and outer shape, but are greatly influenced by their unique percolation, in qualitative agreement with numerical simulations.
http://dx.doi.org/10.1021/acsphotonics.5b00281
Design trifft Funktion : Bericht zur Tagung "Folien + Fahrzeug 2015". - In: Kunststoffe, ISSN 0023-5563, Bd. 105 (2015), 5, S. 16-18
Towards metering tap water by Lorentz force velocimetry. - In: Measurement science and technology, ISSN 1361-6501, Bd. 26 (2015), 11, S. 115302, insges. 11 S.
https://doi.org/10.1088/0957-0233/26/11/115302
An electrochemical quartz crystal microbalance study on adsorption of single walled carbon nanotubes onto poly[3,4-ethylenedioxythiophene] layers. - In: Journal of solid state electrochemistry, ISSN 1433-0768, Bd. 19 (2015), 9, S. 2581-2589
https://doi.org/10.1007/s10008-015-2979-4
Size effect on the mechanical behavior of Al/Si multilayers deposited on Kapton substrate. - In: Journal of materials science, ISSN 1573-482X, Bd. 26 (2015), 10, S. 8224-8228
https://doi.org/10.1007/s10854-015-3485-2
Manufacture of highly porous, anisotropic glass monoliths with a honeycomb-like structure. - In: European journal of glass science and technology. Physics and chemistry of glasses / Society of Glass Technology. - Sheffield : [Verlag nicht ermittelbar], 1998- , ISSN: 1753-3570 , ZDB-ID: 2110794-4, ISSN 1753-3570, Bd. 56 (2015), 4, S. 149-158
http://dx.doi.org/10.13036/17533562.56.4.149
Nanocrystalline steel obtained by mechanical alloying of iron and graphite subsequently compacted by high-pressure torsion. - In: Acta materialia, ISSN 1873-2453, Bd. 97 (2015), S. 207-215
https://doi.org/10.1016/j.actamat.2015.06.049
Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration. - In: Applied physics letters, ISSN 1077-3118, Bd. 107 (2015), 7, S. 073109, insges. 5 S.
Solid-state dewetting is used to fabricate supersaturated, submicron-sized Au-Ni solid solution particles out of thin Au/Ni bilayers by means of a rapid thermal annealing technique. Phase separation in such particles is studied with respect to their equilibrium crystal (or Wulff) shape by subsequent annealing at elevated temperature. It is found that {100} faceting planes of the equilibrated particles are enriched with Ni and {111} faces with Au. Both phases are considered by quantum-mechanical calculations in combination with an error-reduction scheme that was developed to compensate for a missing exchange-correlation potential that would reliably describe both Au and Ni. The observed phase configuration is then related to the minimization of strongly anisotropic elastic energies of Au- and Ni-rich phases and results in a rather unique nanoparticle composite state that is characterized by nearly uniform value of elastic response to epitaxial strains all over the faceted surface. The same conclusion is yielded also by evaluating bi-axial elastic moduli when employing interpolated experimental elastic constants. This work demonstrates a useful route for studying features of physical metallurgy at the mesoscale.
https://doi.org/10.1063/1.4928627
Porenfreie Bauteile : Verringerung des Fehlstellengehalts und Prozessbeschleunigung im RTM-Prozess. - In: Lightweight design, ISSN 2192-8738, Bd. 8 (2015), 4, S. 56-61
Das Resin Transfer Molding Verfahren (RTM) zur Herstellung von Leichtbauteilen aus faserverstärktem Kunststoff wird vermehrt in Serienprozessen eingesetzt. Dabei ist stets ein Kompromiss zwischen kurzer Zykluszeit und hoher Bauteilqualität zu suchen. An der TU Ilmenau wurde die Fehlstellenentstehung während des Injektionsvorgangs genauer analysiert und eine veränderte Injektionsstrategie entwickelt. Die Analyse zeigt, dass bei geeigneten Prozessparametern die Herstellung fehlstellenfreier Bauteile möglich ist. Erzielbare Zykluszeiten erleichtern die Produktion in Großserienprozessen.
https://doi.org/10.1007/s35725-015-0032-2
Simulierend modifizieren : geometrische Gestaltung von Reibflächen auf Sand. - In: Plastverarbeiter, ISSN 0032-1338, Bd. 66 (2015), 7, S. 54-55