Materials Literature
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Artificial Photosynthesis System: A novel photocatalyst/enzyme-coupled artificial photosynthesis system harvests solar energy as seen in green plants through the combination of photocatalysis and biocatalysis and induces asymmetry in an achiral substrate (see picture; ADPR=adenosine diphosphate ribose, NADP=nicotinami…
Using molecular dynamics simulations, the forces acting on nanoparticles inside polymer brushes are computed. Vertical force profiles are obtained under variation of grafting density, nanoparticle (NP) size, solvent quality, and degree of polydispersity. The force profiles are integrated to obtain the inclusion free e…
Sonnenanbeter: Ein gekoppeltes Photokatalysator-Enzym-System als neuartiges künstliches Photosynthesesystem sammelt Solarenergie nach dem Vorbild von Grünplanzen über eine Kombination aus Photo- und Biokatalyse und induziert Asymmetrie in einem achiralen Substrat (siehe Bild; ADPR=Adenosindiphosphatribose, NADP=Nicoti…
Abstract Micropatterned freestanding superelastic TiNi films in the thickness range between 20 and 100 µm are attractive materials for medical in vivo applications. Micropatterning of these materials by UV lithography and etching is a challenging task, as wet etching has severe design limitations due to its isotropic…
Here we represent thermodynamics on soluble carbon nanotubes that enables deep understanding the interactions between single-walled carbon nanotubes (SWNTs) and molecules. We selected sodium cholate and single-stranded cytosine oligo-DNAs (dCn (n = 4, 5, 6, 7, 8, 10, 15, and 20)), both of which are typical SWNT solubi…
The choice of a suitable support for gold nanoparticles (Au NPs) enabled the direct oxidation of unreactive aliphatic alcohol, 1-octanol, to octanoic acid and octyl octanoate in the absence of a base. Under optimized conditions, Au NPs supported on NiO (Au/NiO) exhibited remarkably high catalytic activities and excell…
The temperature dependence of the phonon spectrum in the superconducting transition-metal dichalcogenide 2$H$-NbS${}_{2}$ is measured by diffuse and inelastic x-ray scattering. A deep, wide, and strongly temperature-dependent softening of the two lowest-energy longitudinal phonon bands appears along the $\ensuremath{\…
An extensive investigation of strontium titanate, SrTiO 3 (STO), nanospheres synthesized via a microwave-assisted hydrothermal (MAH) method has been conducted to gain a better insight into thermodynamic, kinetic, and reaction phenomena involved in STO nucleation and crystal growth processes. To this end, quantum-chemi…
High power characteristics of lead‐free ( Bi , Na ) Ti O 3 ( BNT ) and Ba Ti O 3 ( BT )‐based piezoceramics were investigated and compared to commercial “hard” Pb ( Zr , Ti ) O 3 PZT materials. Acceptor‐modified BNT and BT ‐based ceramics showed typical “hardening” characteristics, exhibiting high mechanical quality f…
One of the factors limiting electron mobility in supported graphene is remote phonon scattering. We formulate the theory of the coupling between graphene plasmon and substrate surface polar phonon (SPP) modes and find that it leads to the formation of interfacial plasmon-phonon (IPP) modes, from which the phenomena of…
A confined workspace has its benefits in the case of a non-acid solid catalyst prepared by encapsulating [CoIII(salen)] in the nanocages of mesoporous silica. The catalytic activity and selectivity of [CoIII(salen)] were increased significantly owing to the enhanced cooperative activation effect in the nanoreactors. T…
This paper describes the formation of complex peptide-based structures by the coassembly of two simple peptides, the diphenylalanine peptide and its tert-butyl dicarbonate (Boc) protected analogue. Each of these peptides can self-assemble into a distinct architecture: the diphenylalanine peptide into tubular structure…
This paper presents a study of hybrid effect on mechanical properties of tencel blended ring-, rotor- and Murata jet spinning yarns. The tensile strength, breaking elongation, flexural rigidity and abrasion resistance of tencel-polyester and tencel-cotton blended yarns are examined and compared with the value predicte…
Well-defined ferrocene-containing triblock copolymers were synthesized by atom transfer radical polymerization and self-assembled into highly ordered hexagonal arrays of cylinders via solvent annealing. The thin films were further used as a template and converted into highly ordered iron oxide nanoparticles (α-Fe2O3)…
Gallium oxide (Ga2O3) thin films were deposited by plasma-enhanced atomic layer deposition (ALD) using trimethylgallium as the gallium precursor and oxygen plasma as the oxidant. A wide ALD temperature window was observed from 100 to 400 °C, where deposition rate was constant at ∼0.53 Å/cycle. X-ray photoelectron spec…
Abstract In this article, we report the surface modification of branched polyethyleneimine (PEI) for improved biocompatibility. PEIs with different surface functionalities were synthesized via covalent modification of the PEI amines, including neutralized PEI modified with acetic anhydride, negatively charged PEI modi…
Homochiral Dy(III) complexes: by changing the ligand-to-metal ratio, enantiomeric pairs of a Dy(III) complex of different nuclearity could be obtained. The mono- and dinuclear complexes exhibit characteristics of single-molecule magnets and different slow magnetic relaxation processes. In addition, the dinuclear compl…
Recently, the prospects for amorphous phases of graphene (a-G) have been explored computationally. Initial models were flat, and contained odd-member rings, while maintaining three-fold coordination and sp2 bonding. Upon relaxation, puckering occurs, and may be traced to the existence of pentagons, in analogy with the…
A method to precisely calibrate the oscillation amplitude in Dynamic Scanning Force Microscopy is described. It is experimentally shown that a typical electronics used to process the dynamic motion of the cantilever can be adjusted to transfer the thermal noise of the cantilever motion from its resonance frequency to…
The authors critically reviewed published lists of nano-objects and their physico-chemical properties deemed important for risk assessment and discussed metrological challenges associated with the development of nanoscale reference materials (RMs). Five lists were identified that contained 25 (classes of) nano-objects…