Materials Literature
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Using computational modeling, we investigate the mechanical properties of polymeric materials composed of coiled chains, or "globules", which encompass a folded secondary structure and are cross-linked by labile bonds to form a macroscopic network. In the presence of an applied force, the globules can unfold into line…
Under laser irradiation, the atomic force microscope (AFM) tip can give rise to strong near-field scattering and focusing, leading to strong heating of the tip itself. We report a systematic study of laser heating of an ordinary AFM silicon tip under lateral laser irradiation with micrometer spatial resolution. The te…
In this study, poly(butylene terephthalate) (PBT)/halloysite composites having various amounts of halloysite, as a one-dimensional (1D) nanotubular alumina-silicate filler, were prepared by melt processing in a twin screw extruder. Nonisothermal crystallization behaviors of the samples were studied by DSC and XRD meth…
The direct correlation function (DCF) plays an important role in liquid integral-equation theories and non-mean-field applications of the classical density functional theory (DFT). While for a simple fluid the DCF can easily be calculated from the radial distribution function via the Fourier transform and/or, for spec…
Nano-graphene ribbons are promising in many electronic applications, as their bandgaps can be opened by reducing the widths, e.g. below 20 nm. However, a high-throughput method to pattern large-area nano-graphene features is still not available. Here we report a fabrication method of sub-20 nm ribbons on graphite stam…
Fabrication of Si 2 N 2 O phase free, fully densified Si 3 N 4 / SiC nano–nano composite ceramics was done by combining a carbothermal reduction treatment ( CRT ) and a spark plasma sintering ( SPS ) using commercially available Si 3 N 4 and SiC nano‐powders, and their mechanical and tribological properties were inves…
Periodic arrays of organosilane nanostructures were prepared with particle lithography to define sites for selective adsorption of functionalized gold nanoparticles. Essentially, the approach for nanoparticle lithography consists of procedures with two masks. First, latex mesospheres were used as a surface mask for de…
Plasmon excitation appears to be a powerful and flexible tool for probing in situ and in real time the growth of supported conducting metal nanoparticles. However, although models exist for analysing optical profiles, limitations arise in the realistic modelling of particle shape from the lack of knowledge of temperat…
Novel star polymer-doxorubicin conjugates designed for passive tumor targeting have been developed and their potential for treatment of cancer has been investigated. In the present study the synthesis, physico-chemical characterization, drug release, bio-distribution and preliminary data of in vivo efficacy of the con…
The corrosion inhibition of copper-nickel alloy by benzotriazole (BTA) in 1.5 M HCl has been investigated by weight loss and polarization techniques at different temperatures. Maximum value of inhibitor efficiency was 99.8% at 35°C and 0.1 M inhibitor concentration, while the lower value was 86.3% at 65°C and 0.02 M i…
Ba0.9Co0.7Fe0.2Mo0.1O3–δ (BCFN) is a promising candidate for cathodes in low temperature solid oxide fuel cells. The area specific resistances of the BCFM cathode are as low as 0.06 and 0.13 Ω cm2 at 600 and 550 °C. The maximum power densities are 1117 and 936 mWcm−2 at 600 and 550 °C. The Mo-doping in the BCFM create…
Abstract Soot oxidation with NO (in the absence of gas phase O 2 ) on potassium‐supported Mg‐Al hydrotalcite mixed oxides (K/MgAlO) was studied using a temperature‐programmed reaction and in situ FTIR techniques. Nitrite and the ketene group were identified as the reaction intermediates and thus a nitrite‐ketene mecha…
We investigate the scattering properties of a single surface plasmon in metal nanowire coupled to a nitrogen-vacancy (NV) center in diamond nanocrystal under optical excitation. We demonstrate that, by spatially modulating a classical control beam, alternating regions of high reflection and absorption as well as high…
The grain growth kinetics of Al-doped ZnO nanocrystalline powders have been studied using in situ, real-time synchrotron X-ray diffraction measurements during calcination at various temperatures (400–800 °C) from sol–gels with varying levels of Al dopant (0–4 mol %). Development of the crystallite size versus time was…
One of the main challenges for the future hydrogen economy is finding a safe and efficient way to store hydrogen. Materials with large surface areas, like carbon nanotubes and their analogues boron-nitride nanotubes, are being studied as potential candidates for this purpose. We perform density functional theory (DFT)…
In this study, we present a new method to fabricate large-area two-dimensionally (2D) ordered gold nanobowl arrays based on 3D colloidal crystals by wet chemosynthesis, which combines the advantages of a very simple preparation and an applicability to "real" nanomaterials. By combination of in situ growth of gold nano…
In proteins, the Mössbauer effect and neutron scattering show a broad line and a rapid increase of the conformational mean-square displacement above about 180 K. The increase, dubbed the "dynamical transition," is controversial. We introduce a new interpretation of the Mössbauer effect in proteins and demonstrate that…
According to the ITRS Roadmap, the EUV mask requirement for 2X nm technology node is detection of defect size of 20 nm. The history of optical mask inspection tools involves continuous efforts to realize higher resolution and higher throughput. In terms of productivity, considering resolution, throughput and cost, we…
The dynamical deformation of ultrasoft colloids as well as their dynamic frictional forces are numerically investigated, when one colloid is dragged past another at constant velocity. Hydrodynamic interactions are captured by a particle-based mesoscopic simulation method. At vanishing relative velocity, the equilibriu…
Kleinraumtransporter: Sub-μm-Vateritpartikel (siehe Bild) wurden unter Variation der Parameter des Kristallwachstums synthetisiert. Ihre Porosität ermöglicht die Beladung mit und Speicherung von verschiedenen Stoffen. Deren Freisetzung gelingt durch Rekristallisation zu Calcit in wässriger Lösung und kann durch die Ei…