16 article(s) from Meyer, Ernst
- Full Research Paper
- Published 15 Apr 2019
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Figure 1: (a) Principle of n- and p-type DSSCs showing opposite charge transfer directions. (b) Structures of...
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Figure 2: The surface of NiO(001). (a) Large-scale topographic image of the NiO(001) crystal showing clean te...
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Figure 3: (a) Large-scale topographic image showing that Cu-TCPP molecules form islands on the surface of NiO...
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Figure 4: (a) Large-scale topographic image showing that C343 molecules form islands on the surface of NiO(00...
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Figure 5: (a, b) CPD measurements of Cu-TCCP and C343 islands on the NiO(001) substrate, respectively (scan p...
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- Review
- Published 16 Jul 2018
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Figure 1: a) Scheme of a MoO3 nanocrystal on MoS2. The AFM tip is firmly positioned on top on the nanocrystal...
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Figure 2: a) Example of a nanomanipulation during which half of a nanoparticle is scan-imaged, before the tip...
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Figure 3: Dependence of nanoparticle shear stress on the contact area. a) Relative shear stress obtained from...
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Figure 4: Front perspective: a snapshot of a MD-simulated frictional interface between a colloidal monolayer ...
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Figure 5: a) A graphene nanoribbon manipulated along a Au(111) surface. A probing tip lifts the GNR verticall...
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Figure 6: Single-molecule tribology. a) Schematic drawing of the experiment: A single porphyrin molecule is a...
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Figure 7: Non-contact friction experiments of NbSe2. At certain voltages and distances, one finds dramaticall...
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Figure 8: The “Swiss Nanodragster” (SND), a 4’-(p-tolyl)-2,2’:6’,2”-terpyridine molecule, was moved across an...
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Figure 9: Example of a change of conformation potentially triggered at surfaces. a) Trans (1) and cis (2) iso...
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- Full Research Paper
- Published 23 Jan 2018
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Figure 1: Structure of 4,4′-di(4-carboxyphenyl)-6,6′-dimethyl-2,2′-bipyridine. The trans-conformation of DCPD...
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Figure 2: From large-scale imaging to atomic resolution on NiO(001). (a) Large scale topographic image of the...
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Figure 3: Single DCPDMbpy molecules on NiO(001). (a) Topographic image of NiO(001) covered with DCPDMbpy afte...
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Figure 4: Windmill-shaped cluster on NiO(001). (a) Topographic image of DCPDMbpy forming molecular clusters o...
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Figure 5: Islands of DCPDMbpy on NiO(001). (a, b) simultaneous topographic and CPD measurements of the molecu...
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- Full Research Paper
- Published 02 Jan 2018
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Figure 1: Feedback loops necessary to track the flexural contact resonances of the cantilever. The main feedb...
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Figure 2: Left: Force–distance and frequency shift–distance curves of LLDPE, PP, PS and FDTS for the determin...
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Figure 3: Left: Force–distance and frequency shift–distance curves of PTFE. The curves of Δf1 and Δf2 as a fu...
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Figure 4: (a) Cantilever in contact with the sample surface modeled by two springs in series, k1 and ksample,...
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Figure 5: Three phases characterizing the evolution of stress σ during indentation. This evolution is respons...
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Figure 6: Mapping of (a) topography and (b) elastic modulus of 2.5 μm × 2.5 μm areas of the LLDPE, PP and PS ...
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Figure 7: Mapping of (a) topography and (b) elastic modulus of a 2.5 μm × 2.5 μm area of the FDTS + SiOx SAM ...
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Figure 8: Line profile of the SiOx holes in the topographical mapping of the SAM showing their relative heigh...
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- Full Research Paper
- Published 11 Jan 2017
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Figure 1: Adsorption of ZnPc molecules on the TiO2(011)-(2×1) surface. From left to right: empty state STM im...
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Figure 2: Geometrical characterization of 0.9 ML of ZnPc molecules on the TiO2(011)-(2×1) surface. (a) Illust...
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Figure 3: Geometrical characterization of 1.3 ML of ZnPc molecules on a TiO2(011)-(2×1) surface after deposit...
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Figure 4: The tentative structural model of the first (b) and the second (c) phases of the molecular chain ar...
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Figure 5: 250 × 250 nm empty state STM images of ZnPc (a) and CuPc (b) structures formed on top of the ZnTPP ...
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Figure 6: 50 × 50 nm empty state STM images of ZnPc (a) and CuPc (b) structures formed on top of the ZnTPP we...
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Figure 7: TiO2(011)-(2×1) reconstructed surface. (a) 9 × 9 nm empty state STM image; scanning parameters: I =...
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Figure 8: Chemical structure of the molecules used in the study (from left to right): Zn(II)meso-tetraphenylp...
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- Commentary
- Published 09 Nov 2016
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Figure 1: The discussed molecular species (a) PTCDA, (b) metal-free phthalocyanine (H2Pc), in which the centr...
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Figure 2: Empty-state STM images of the densely packed molecular structures. (a) and (b): the closed layer PT...
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Figure 3: The adsorption geometries of CuPc molecules on the TiO2(011) substrate (coverage: 0.06 ML): (a) a s...
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Figure 4: STM images of 2H-TPP and NiTPP molecules on the TiO2(110)-(1 × 1) surface. (a) and (b) 2H-TPP molec...
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Figure 5: A linear π–π-stacked structure formed by COOH-ZnTPP molecules on a TiO2(011)-(2 × 1) surface – see ...
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- Full Research Paper
- Published 28 Dec 2015
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Figure 1: a) Schematic view of the optical path allowing good visibility from the top to the tip–sample setup...
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Figure 2: Additional two lenses optics which allows for the illumination of the tip–sample interface.
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Figure 3: Coarse positioner and scan unit. Panel a shows the entire unit. In panel b the unit is stripped dow...
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Figure 4: The atomic force microscope is assembled on a CF200 flange with four tension springs. Copper fins a...
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Figure 5: A chromium grain embedded in a polycrystalline copper alloy. a) Measured with a confocal laser micr...
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Figure 6: a) Topography, b) dark KPFM and c) 30% laser-power illuminated (470–480 nm and a maximum power of 5...
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Figure 7: Panel a shows sections across the SiC p/n-junction (Figure 6) extracted from images taken at various light ...
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Figure 8: Simultaneously acquired topography (a) and CPD (b) images of a silicon carbide JBS structure. The s...
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Figure 9: a) Close view of the line sections from Figure 8e at the top layer of the structure, together with least-squ...
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- Full Research Paper
- Published 18 Sep 2015
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Figure 1: Scheme of the commercial ESI setup [33] (1 to 5) connected to the UHV chamber (7), i.e., sample prepara...
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Figure 2: a) Topography image of the KBr(001) surface after the application of UHV-ESI with a mixture of tolu...
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Figure 3: a) Chemical structure of the used triply fused diporphyrin molecule derivative prepared according t...
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Figure 4: Topography image (400 × 400 nm2) of diporphyrins on KBr(001) after 1 h of annealing at 350 K. Diffe...
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Figure 5: a) Topography image of a diporphyrin island on KBr(001). b) Corresponding dissipation image. c) Isl...
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Figure 6: Topography image (40 × 40 nm2) of the KBr(001) surface with a low coverage of diporphyrin molecules...
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Figure 7: a) High resolution topography image of a single diporphyrin on KBr(001) at room temperature. b) Sam...
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- Full Research Paper
- Published 10 Jul 2015
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Figure 1: Structural model of the TiO2(110)-(1 × 1) surface: (a) top and side view, (b) perspective view. The...
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Figure 2: Empty-state STM image of a low coverage (<0.05 ML) of PTCDA molecules assembled on the TiO2(110) su...
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Figure 3: 0.7 ML of PTCDA molecules on a TiO2(110) surface; (a), (b) and (c) are empty state STM images showi...
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Figure 4: A well-ordered PTCDA layer formed at room temperature. (a) and (b): empty-state STM images of a clo...
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Figure 5: Empty-state STM images of the PTCDA molecules on the TiO2(110) surface after 100 °C annealing. (a) ...
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Figure 6: Empty-state STM images of the densely packed molecular structures. (a) and (b): closed layer PTCDA ...
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Figure 7: Empty-state STM images of the closed layer of PTCDA molecules after annealing to 150 °C: (a) 100 nm...
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- Full Research Paper
- Published 13 Jan 2014
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Figure 1: (a) Theoretically predicted trajectory angles of nanoparticles manipulated on an arbitrary surface ...
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Figure 2: SEM images of the three morphologies of nanoparticles explored in this work. A certain size distrib...
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Figure 3: (a) Phase image of nanoparticles (B) adsorbed and manipulated on mica substrate. (b) Topography ima...
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Figure 4: Calculated energy dissipation histograms obtained for the nanoparticles A, B and C from Figure 3 on mica (a...
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- Full Research Paper
- Published 01 Jul 2013
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Figure 1: Different components of a DSC under illumination in an open circuit. Upon light excitation electron...
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Figure 2: Schematic band diagram for a KPFM tip in close proximity to an n-type semiconductor surface (a) in ...
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Figure 3: Schematic structures of (a) the standard dye N719 and (b) a copper(I)-based dye, assembled in situ ...
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Figure 4: Topography and work function of (a) a bare TiO2 and (b) an N719 sensitized TiO2 layer with a thickn...
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Figure 5: SPV for bare nc-TiO2 in dependency on (a) the wavelength and (b) on the light intensity under super...
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Figure 6: Semilogarithmic plot of the SPV dependence on the incident light intensity, (a) measured for three ...
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Figure 7: Time evolution of the measured CPD of TiO2 and TiO2 + N719 during the turning on and off of the vio...
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Figure 8: Schematic illustration of the KPFM measurement system and the surface dipole induced by adsorption ...
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Figure 9: (a) I–V curves for a bare TiO2 solar cell and DSCs sensitized with Cu(I) dye and N719. (b) A schema...
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Figure 10: Lift-mode KPFM setup inside a nitrogen glove box in combination with a tunable illumination system ...
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- Full Research Paper
- Published 13 Dec 2012
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Figure 1: The two-dimensional material consisting of carbon atoms in honeycomb orientation, graphene (a), los...
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Figure 2: AFM measurements of HOPG after hydrogen plasma exposure at 450 °C, where round-shaped blisters appe...
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Figure 3: (a) XPS and (b) UPS spectra of the HOPG before exposure, after 30 min of exposure and after an anne...
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Figure 4: (a) STM images of the HOPG after 5 min of hydrogen plasma exposure at 450 °C and (b) after an annea...
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Figure 5: Top-view STM image of the surface consisting of various atomic-scale patterns where a very low defe...
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- Full Research Paper
- Published 18 May 2011
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Figure 1: (a) Geometrical model of a tip, with cone length l, half-aperture angle θ0, spherical apex radius R...
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Figure 2: One dimensional PSF calculated for two different probe–sample distances with and without the cantil...
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Figure 3: Left axis: Relative magnitude of the homogeneous force distribution on different fractions of the p...
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Figure 4: Line section (vertical line at inset figure) for KPFM simulation with different cantilever geometri...
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Figure 5: Line section of UHV KPFM (i) measurements [20], (ii) simulated, and (iii) theoretical potential distrib...
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Figure 6: Beam deflection influence on PSF. The dashed line represents the PSF of a deflected beam while the ...
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Figure 7: Second harmonic deflection relative to the cantilever at its rest position. The free edge deflectio...
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Figure 8: Second harmonic weighting influence on the PSF. Dashed lines: PSF calculated with the second harmon...
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- Full Research Paper
- Published 13 Jan 2011
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Figure 1: (a) Topographical measurement of molecular structures at KBr step edges showing monowires (1), unor...
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Figure 2: (a) Topography of cyano-porphyrin molecular wires on a NaCl single crystal surface. In contrast to ...
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Figure 3: nc-AFM measurements of molecular assemblies grown on an ultrathin KBr layer on Cu(111). (a) 100 × 1...
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Figure 4: Chemical structure of the meso-(4-cyanophenyl)-substituted Zn(II) porphyrin investigated in this st...
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