9 article(s) from Hahn, Horst
- Full Research Paper
- Published 19 Apr 2016
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Figure 1: (a) Sketch showing multiple concurrent deformation mechanisms. (b) ACOM-STEM orientation maps overl...
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Figure 2: Grain fragmentation of the center grain (white boundary) during the tensile deformation (0–4.7% str...
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Figure 3: Twinning, twin boundary migration and detwinning of the center grain (white boundary) during the te...
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Figure 4: Analysis of the crystallite rotations in the range 0–65° for ncPda: (a) Crystallite boundary map ov...
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Figure 5: Analysis of the crystallite rotations in the range 0–12° for ncPda: (a) Crystallite boundary map of...
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Figure 6: Crystalllite size versus lattice rotation plot of all tracked crystallites: (a) ncPda (dA = 25 nm) ...
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- Letter
- Published 13 May 2015
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Figure 1: EFTEM (left) and STEM (right) micrographs of a 10 vol % Fe1000/Cr sample prepared on a TEM grid + a...
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Figure 2: Blocking temperature TB versus approximated nearest neighbor distances DNN for Fex/Cr samples. The ...
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Figure 3: Hc versus DNN for Fex/Cr samples. Hc mainly depends on DNN, no clear effect of the cluster size is ...
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Figure 4: Left: Heb versus DNN for the three series of samples with different cluster sizes. DNN has no effec...
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- Full Research Paper
- Published 15 Aug 2014
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Figure 1: Schematic diagrams of the experimental procedure. (a) By slowly freezing the silver nitrate electro...
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Figure 2: SEM images of silver wires: (a) Overview: low-magnification image. (b) Zoom-in of (a). (c) Image of...
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Figure 3: TEM analysis of thin silver wires and corresponding EDX information. (a) Bright-field image of typi...
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Figure 4: Auger depth profile curves of freshly prepared and aged silver wires. The full and dotted curves co...
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Figure 5: TEM analysis of thin comb-like silver dendrites (dark areas in the image left) and corresponding SA...
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- Full Research Paper
- Published 01 Nov 2013
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Figure 1: Cycling behavior of C(FeF2)0.55, C(FeF2)0.55_200, C(FeF2)0.55_300 and C(FeF2)0.55_400. The material...
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Figure 2: XRD pattern (Mo Kα) of: a) Nanocomposites with different C/F ratio, b) CFx precursors. *:FeF2; §:C ...
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Figure 3: Measured Raman spectra and G-mode shifts of the different nanocomposites.
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Figure 4: C K-edge EEL spectra of compounds with different carbon contents.
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Figure 5: EEL spectra of C(FeF2)0.25_300. The spectrum shows the F K-edge and the Fe L3- and Fe L2-edges.
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Figure 6: TEM and SAED pictures of a) C(FeF2)0.5_300, b) C(FeF2)0.35_300, c) C(FeF2)0.25_300 and d) one compl...
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Figure 7: Discharge capacities at: a) 25 °C, b) 40 °C. The samples were cycled with a current density of 25 m...
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Figure 8: Charge/discharge profiles for the first 20 cycles of the nanocomposites at 25 °C. The samples were ...
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Figure 9: Long time cycling of C(FeF2)0.25_300. a) Specific discharge capacity at different temperatures, b) ...
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Supp. Info
- Letter
- Published 30 Oct 2013
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Figure 1: XRD pattern and Raman spectrum (inset) of [Fe3O4-C].
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Figure 2: SEM (top left) and TEM images of [Fe3O4–C].
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Figure 3: Nitrogen isotherm (inset) and pore width profile (cumulative: open circles, differential: filled ci...
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Figure 4: Electrochemical properties of [Fe3O4–C]. (a) Charge/discharge curves, (b) cyclic voltammograms, (c)...
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- Full Research Paper
- Published 24 Sep 2013
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Figure 1: BF-TEM images of the initial microstructure of ncPd 1 (a) and ncPd 2 (b) with the corresponding sel...
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Figure 2: Orientation maps overlaid with reliability derived from ACOM-TEM of the as deposited sample in a) c...
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Figure 3: Orientation analysis of the as prepared sputtered ncPd film. a) X-ray diffraction pattern of the as...
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Figure 4: Crystallites recognized by ACOM-TEM for the as deposited sample and samples deformed to 5% and 10% ...
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Figure 5: a) Crystallite and b) grain size as a function of strain based on ACOM-TEM (equivalent in-plane dia...
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Figure 6: a) Twin crystallites/area as a function of strain based on the ACOM-TEM analysis (ncPd 1: red, ncPd...
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Figure 7: Stress strain behavior and evolution of twin boundary density as a function of strain for grain siz...
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Figure 8: Model of the deformation pathways: If growth twins are initially present, partial dislocations nucl...
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Supp. Info
- Full Research Paper
- Published 14 May 2013
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Figure 1: CVR chamber consisting of precursor sources, reaction zone and thermophoretic powder-collection sys...
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Figure 2: X-ray diffraction patterns (Cu Kα radiation) from the TiO2:Eu nanophosphors produced by the CVR met...
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Figure 3: Normalized emission spectra of Eu3+ in TiO2 under excitation at 330 or 390 nm.
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Figure 4: Excitation spectrum of TiO2:Eu nanoparticles detected at 617 nm emission.
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Figure 5: Decay of the TiO2:Eu emission intensity with time for excitation at 330 nm.
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Figure 6: Decay of the TiO2:Eu emission intensity at 617 nm with time for excitation at 460 nm.
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Figure 7: STEM image of TiO2:Eu nanoparticles coated with a shell of 3 nm Al2O3 and TiO2.
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Figure 8: High-resolution TEM image of TiO2 nanoparticles coated with Al2O3 showing that the Al2O3 coating is...
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Figure 9: SEM image of Ag nanoantennas from the nanosphere lithography process (using colloid spheres with 3 ...
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Figure 10: Confocal microscopy images of the Ag nano-antenna structures (produced using 3 μm diameter colloid ...
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Figure 11: Calculated field-enhancement factor (normalized to the amplitude E0 of the incident light) for bowt...
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Figure 12: Field enhancement ratio (scale goes from 0 to 90) for Ag bow-tie nano-antennas with tip-to-edge len...
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Figure 13: Dependence of the field enhancement in the centre of the gap of a bowtie antenna structure on the i...
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Figure 14: Field enhancement ratio for an array of Ag nanoantenna structures with tip-to-edge length of 370 nm...
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Figure 15: SEM image of spin coated TiO2:Eu layer on Ag nanoantenna structures.
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Figure 16: (a) AFM image of the spin coated TiO2:Eu layer. The antenna structure is still visible in this regi...
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Figure 17: Fluorescent intensity obtained by confocal microscopy of spin-coated nanoantenna structures under e...
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Figure 18: Emission spectrum of VTLUNP organic pigment under excitation with 532 nm radiation.
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Figure 19: Excitation spectrum of VTLUNP organic pigment for emission at 614 nm.
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Figure 20: (a) AFM image of Ag nanoantennas spin coated with VTLUNP (b) AFM height profiles along the lines 1 ...
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Figure 21: Representative scattering (a, c) and fluorescence (b, d) images of the samples spin coated with VTL...
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Figure 22: Representative fluorescence images (recorded at 614 nm) of samples without SiOx layer (a, b) and sa...
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- Letter
- Published 14 Dec 2011
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Figure 1: Magnetization hysteresis (M–H) curves for the pure MgB2 sample at various temperatures: 4.2 K, 10 K...
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Figure 2: Magnetization hysteresis (M–H) curves for the FeO-covered MgB2 sample at various temperatures: 4.2 ...
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Figure 3: Magnetic-field dependence of the critical current density Jc for the pure (red triangles) and for t...
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Figure 4: Magnetic-field dependence of the critical current density Jc for the pure (red triangles) and for t...
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Figure 5: Magnetic-field dependence of the critical current density Jc for the pure (red triangles) and for t...
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Figure 6: Magnetic-field dependence of the critical current density Jc for the pure (red triangles) and for t...
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