7 article(s) from Plettl, Alfred
- Full Research Paper
- Published 09 May 2018
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Figure 1: Fabrication scheme for nanoporous membranes: (a) The commercially available silicon nitride membran...
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Figure 2: HRSEM micrographs of nanoporous silicon nitride membranes with Cr top layer. Shown are three membra...
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Figure 3: Diameter distributions for the Au NP etch mask (green) and the resulting nanopores of membrane C on...
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Figure 4: Ionic transport measured through the three membranes A, B and C for KCl electrolyte concentrations ...
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Figure 5: Molecule transport through a porous membrane of type C measured by fluorescent microscopy. (a) Expe...
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Peptide-equipped tobacco mosaic virus templates for selective and controllable biomineral deposition
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- Published 25 Jun 2015
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Figure 1: Schematic representation of the chemical modification and mineralization of tobacco mosaic virus (T...
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Figure 2: Gel electrophoretic analysis of chemically modified TMV–Lys particles. (a) SDS-PAGE shows retarded ...
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Figure 3: Zeta potential of bare and chemically modified TMV–Lys particles in ddH2O or 30 mM Tris-HCl pH 8.0,...
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Figure 4: SiO2 deposition reactions using functionalized and non-modified TMV templates, as indicated. (a) Im...
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Figure 5: Time-resolved monitoring of silica shell growth on TMV–KD10 templates: TEM analysis of non-stained ...
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Figure 6: ToF-SIMS analysis for determination of silica deposition. TMV–KD10 with TEOS (blue) and without TEO...
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- Full Research Paper
- Published 12 Dec 2013
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Figure 1: Schematics of nanopillar fabrication by applying Au NP as masks after fine tuning their size by an ...
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Figure 2: HRSEM images of (a) as prepared Au NP on silica (average diameter 12 nm), (b) Au NP after the secon...
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Figure 3: Nanopillar arrays etched into silica applying Au NP of different diameters as masks: (a) NP diamete...
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Figure 4: Schematics of fabricating nanopillars by applying Au NP as masks, which are repeatedly re-grown by ...
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Figure 5: HRSEM images [(a), (b), (e) substrates tilted by 30°, (c), (d) substrates tilted by 80°] of nanopil...
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- Full Research Paper
- Published 07 Dec 2012
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Figure 1: Principle of percolated perpendicular media. The exchange-coupled film is interspersed by nonmagnet...
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Figure 2: Schematics of the sample preparation. Self-assembled, close-packed monolayers of PS spheres are dep...
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Figure 3: Size reduction of PS spheres as a function of etching time in isotropic oxygen plasma at ambient te...
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Figure 4: SEM images of monolayer assemblies of commercial Au nanoparticles with (a) 60 nm diameter and (b) 4...
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Figure 5: (a) Magnetic hysteresis loops of a percolated Fe film (a = 95 nm, d = 66 nm, t = 17 nm) and a thin-...
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Figure 6: (a) Scanning transmission X-ray microscopy images of Fe films taken with right circularly polarized...
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Figure 7: (a–i) MFM images of the same spot taken in different perpendicular fields after driving the sample ...
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Figure 8: (a) DF-STEM image of 40 nm Au nanoparticles capped with a magnetic Co/Pt multilayer. Panel (b) show...
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Figure 9: (a) MOKE remanence curves for Co/Pt multilayers grown on a planar substrate as well as on arrays of...
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- Full Research Paper
- Published 20 Nov 2012
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Figure 1: SEM image of Au nanoparticles (average diameter 13 nm, interparticle distance 102 nm) deposited on ...
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Figure 2: Schematics of the process leading to positioning nanoparticles on the micrometer scale: (1) Start; ...
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Figure 3: SEM image of resist disks arranged in a square (dark contrasts) as obtained after development (step...
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Figure 4: SEM image of two squares of nanopillars as obtained after RIE with single Au NPs, arranged in a squ...
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Figure 5: SEM image of four squares of nanopillars as obtained after RIE with single Au NPs, arranged in a sq...
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- Full Research Paper
- Published 18 Aug 2011
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Scheme 1: Simplified model of a seeded emulsion polymerization process to clarify the desired reaction pathwa...
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Figure 1: Variation of the amount of monomer added to control the resulting size in the seeded emulsion polym...
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Figure 2: Variation of the amount of initiator relative to the amount of added monomer. The dotted lines are ...
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Figure 3: Effect of different concentrations and types of surfactants applied to stabilize the particles in t...
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Figure 4: Effects of the composition of the continuous phase on the seeded polymerization reactions. The dott...
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Figure 5: A non-conventional lithographic process is used to produce arrays of Pt NPs from platinum-acetylace...
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Figure 6: Pt-precursor loaded PS colloids on a Si3N4 membrane in the saturated state after exposure to isotro...
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Figure 7: Diameter of Pt-precursor loaded or unloaded PS particles prepared with the surfactants SDS or Luten...
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Figure 8: HRSEM images of particles in the saturated state after 60 min isotropic oxygen plasma treatment. a)...
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Figure 9: Saturated states after plasma etching: a) Closed surface of a seeded 256 nm particle and b) porous ...
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- Full Research Paper
- Published 16 Aug 2011
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Figure 1: Fabrication of arrays of metal film coated hemispheres. Main steps: (a) Preparation of 2D colloidal...
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Figure 2: AFM topography images of coated beads (a) and coated hemispheres (b), both fabricated using PS sphe...
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Figure 3: Reflectance (left) and transmittance (right) obtained at vertical illumination with an objective of ...
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Figure 4: Fabrication steps for arrays of triangular mesas etched in quartz and arrays of holes in metal film...
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Figure 5: Topography image of a projection pattern of Cr on quartz. The height of the pattern is 30 nm. Small...
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Figure 6: SEM micrographs of arrays of triangular mesas etched into the quartz substrate. Spheres of 3 μm dia...
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Figure 7: Arrays of triangular holes in 180 nm thick gold film. Monolayer colloidal crystals of 3 μm (left) a...
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Figure 8: Reflectance (left) and transmittance (right) of triangular nanostructures etched in quartz and coat...
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