Advances in nanomaterials
One recent development in the field of nanomaterials is the ability not only to tailor the properties of nanomaterials but to tune these properties. Tunable materials allow to change the properties of these materials reversibly and in a controlled manner after fabrication, e.g., by applying an electric field. Another remarkable development is the discovery of “nanoglasses”, based on the idea of introducing internal interfaces on the nanometer scale between non-crystalline, amorphous or glassy structures. These glasses differ structurally from present-day glasses and thus are expected to open the way to an age of glass-based technologies. The articles in this Thematic Series highlight recent developments, from nanoporous polymers to graphene quantum dots, from concepts for designing magnetic properties to nanoplasticity and to the remarkable mechanical properties of a novel type of nanowires.
See also the Thematic Series:
Advances in nanomaterials II
See videos about nanomaterials at Beilstein TV.
- Full Research Paper
- Published 27 Dec 2012
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Figure 1: Considered structure of polythiophene (PTp). The frame indicates the unit cell used in the calculat...
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Figure 2: Structure and density of states for (a) PTp and (b) α,β-PTp.
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Figure 3: Electronic density isosurfaces (ρ(r) = 0.01 e/Å3) of the highest occupied crystal orbital (HOCO, re...
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Figure 4: Illustration of the substitution patterns for singly bonded substituents of oligo- and polythiophen...
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Figure 5: Density of states of substituted polymers: (a) CH3PTp, (b) ClPTp, (c) NH2PTp and (d) NO2PTp. As a c...
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Figure 6: Calculated band structure of (a) unsubstituted PTp and of the substituted polymers (b) NH2PTp and (...
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Figure 7: Electronic density isosurfaces (ρ(r) = 0.01 e/Å3) of the HOCO (red) and LUCO (orange) for (a), (b) ...
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Figure 8: Calculated DOS of PhPTp compared to PTp. The inset illustrates the structure of PhPTp.
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Figure 9: Considered vinyl-bridged polythiophene derivatives. (a) Structural formula, (b) band gaps Eg of the...
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Figure 10: Color-coded change of bond lengths in (a) NH2PTp and (b) NO2PTp for positively charged polymers wit...
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Figure 11: Density of states for positively charge polymers corresponding to a charge of 1|e| per unit cell: (...
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- Full Research Paper
- Published 04 Mar 2013
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Figure 1: Monolayer of magnetic Co nanoparticles, species I. (a) SEM image of a two-dimensional particle asse...
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Figure 2: AGM measurements of nanoparticles assembled in monolayers after different exposure times to a hydro...
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Figure 3: (a) STEM image of the cross section of a plasma-treated sample. (b) As highlighted, the Co particle...
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Figure 4: XRD measurements of sample I (top) and sample II (bottom) before (red) and after (blue) hydrogen-pl...
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Figure 5: Equilibrium state of the model system. Particles of 13 nm size assembled in a hexagonal lattice wit...
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Figure 6: Hysteresis loops of the 10 × 10 hexagonal lattices shown in Figure 5 for different anisotropy cases obtaine...
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- Full Research Paper
- Published 07 Mar 2013
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Figure 1: Two observed modes of plasticity. (a) Snapshot of the extrusion from a 15.6 Å orifice showing the d...
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Figure 2: The maximum shear component of the atomic stress tensor expressed by the colouring of the atoms (co...
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Figure 3: Extrusion from a 15 Å orifice. Hydrostatic pressure, von Mises stress and the amount of extruded ma...
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Figure 4: Extrusion from 15 Å orifice. (a) The nucleation of the first Shockley partial. (b) Two nonlocking s...
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Figure 5: Dislocations interacting at the onset of plasticity. Colouring by the length of the Burgers vectors...
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Figure 6: A dislocation multijunction blocking the dislocation mobility and nucleation in the system. Disloca...
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Figure 7: Atomic arrangement during the breaking of the dendrite. (a–b) The locking multijunction (see Figure 6) is b...
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Figure 8: Dislocation interacting to break the dendrite. (a–b) The locking multijunction (see Figure 6) is broken as ...
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Figure 9: Hydrostatic pressure and von Mises stress at the onset of plasticity versus extrusion orifice radiu...
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Figure 10: Extrusion from a 11 Å orifice. Hydrostatic pressure, von Mises stress and the amount of extruded ma...
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Figure 11: Energy per atom with respect to the fcc phase at zero pressure for fcc and amorphous Cu. Energy of ...
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- Full Research Paper
- Published 02 May 2013
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Figure 1: Scanning electron micrograph showing the facet structure of the Mourning Cloak butterfly. Note the ...
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Figure 2: Triple junction in the facet structure and nanonipples in three adjacent facets (magnification: 6,0...
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Figure 3: Topological disorder in the hexagonal nipple structure showing two pairs of 5–7 (“•”–“X”) coordinat...
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Figure 4: Examples of Σ13 grain boundaries between crystals (domains) in the nipple structure consisting of r...
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Figure 5: Coincidence site lattices for Σ = 7, Σ = 13 and Σ = 19.
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Figure 6: Histogram showing the misorientations around the common <111> direction between adjacent crystals i...
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Figure 7: Extended Σ13 coincidence site lattice covering several crystals (magnification: 13,000×).
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Figure 8: Several facets at very high tilt angle showing the curvature on each facet surface (magnification: ...
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- Full Research Paper
- Published 07 May 2013
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Figure 1: (a) AFM image of the as-grown surface of microcrystalline diamond-on-insulator substrates. Mean sur...
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Figure 2: (a) SEM image of a fabricated focussing grating coupler. Light propagating through the incoming wav...
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Figure 3: (a) Measured transmission spectrum of typical grating coupler devices. Best coupling loss at the ce...
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- Full Research Paper
- Published 21 May 2013
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Figure 1: (a) The TbPc2 molecule, consisting of two parallel phthalocyanine planes with the Tb ion centred in...
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Figure 2: X-ray absorption spectra of the Tb M4,5 edges for a submonolayer TbPc2/Cu(100), measured at T ≥ 10 ...
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Figure 3: Element-specific field-dependent magnetization for the sample TbPc2/Ni/Cu(100). The blue line is th...
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Figure 4: Magnetization curves for the sample TbPc2/Ni/Cu(100). The top figure shows the magnetization curve ...
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- Full Research Paper
- Published 13 Jun 2013
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Figure 1: (a) Bright-field TEM micrograph of the nanograined pure ZnO thin film deposited on a sapphire subst...
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Figure 2: Magnetization (calibrated in units of Bohr magnetons per formula unit of ZnO) at RT for ZnO thin fi...
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Figure 3: Dependence of the saturation magnetization Js (magnetic moment in units of Bohr magnetons per ZnO f...
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Figure 4: FM (full symbols) and para- or diamagnetic (open symbols) behaviour of Fe-doped ZnO in dependence o...
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Figure 5: Dependence of the saturation magnetization (magnetic moment per iron atom in units of Bohr magneton...
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- Full Research Paper
- Published 19 Jun 2013
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Figure 1: Dye delivery by microchannel cantilever. The substrate (1) is placed on the stage (2), which can be...
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Figure 2: SEM images of the (a) plain paper, (b) nylon membrane, (c) HEMA polymer and (d) nitrocellulose subs...
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Figure 3: Pore size distribution based on SEM micrographs for the three different porous substrates, measured...
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Figure 4: Comparison of printed phloxine B solution on different substrates. Fluorescence microscopy images o...
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Figure 5: Time dependence and homogeneity of microprinting on porous polymer HEMA films. Fluorescent microgra...
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Figure 6: Fluorescence spectra of (a) macroscopic droplets of pure bromophenol blue dye solution (black), dye...
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- Letter
- Published 24 Jun 2013
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Figure 1: Steady-state cyclic voltammograms (CVs) of porous nanocrystalline Pt (sample PtER) measured at a sc...
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Figure 2: Relative variation of resistance (ΔR/R0, b) and magnetic moment (Δm/m0, c) of porous nanocrystallin...
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Figure 3: Relative variation of magnetic moment (Δm/m0, b) of porous nanocrystalline Pt upon electrochemical ...
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Figure 4: Relative variation of electrical resistance ΔR/R0 of sample PtER upon adsorption (green: dashed lin...
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- Full Research Paper
- Published 19 Sep 2013
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Figure 1: Local composition of the grain interior and the GBs as a function of the global composition for two...
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Figure 2: Atomic configurations after annealing with the hybrid MD/MC scheme. Ni atoms in the grain interior ...
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Figure 3: Stress-strain behavior and dislocation density for structures of 15 nm grain size, which were equil...
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Figure 4: Stress-strain behavior and dislocation density for structures of 15 nm grain size, which were equil...
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Figure 5: Stress-strain behavior and dislocation density for structures of 15 nm grain size, which were equil...
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Figure 6: Stress-strain behavior, dislocation density and evolution of GB volume for structures of 5 nm grain...
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Figure 7: Irreversible change in GB volume (VGB) as a function of the irreversible change in total sample vol...
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Figure 8: Correlation between yield stress (stress at plastic strain of 0.7%) and the change in free volume i...
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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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- Full Research Paper
- Published 27 Nov 2013
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Figure 1: Molecular structure of [Fe4Dy2(OH)2(N-nbdea)4((CH3)3CCOO)6(N3)2] and its core. Solvent molecules, d...
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Figure 2: The 57Fe Mössbauer spectra for [Fe4Dy2(OH)2(N-nbdea)4((CH3)3CCOO)6(N3)2] at 100 and 50 K (top); at ...
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Figure 3: χT-vs-T plots at 0.1 T for 1 and 2 (inset). The solid line is the best fit to the experimental data....
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Figure 4: 3 K Mössbauer spectrum of polycrystalline 2 recorded in a perpendicularly applied field of 5.0 T. T...
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Figure 5: Plot of out-of-phase ac susceptibility signals vs temperature for 1 at the indicated oscillation fr...
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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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