Materials Literature
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The reactions of molecular oxygen with bridging hydroxyl groups (OH b ’s) formed by H 2 O dissociation on bridging oxygen vacancies (V O ’s) of TiO 2 (110) are studied at low and high OH b coverages as a function of the O 2 exposure, using scanning tunneling microscopy, temperature programmed desorption, and electron…
Photoremovable protecting groups that can reveal biologically important functional groups through one- and two-photon excitation (1PE and 2PE, respectively) have promise in regulating physiological function in a temporally and spatially restricted manner. Only a few chromophores have sufficient sensitivity to 2PE suit…
The emerging and potential commercial applications of nanotechnologies clearly have great potential to significantly advance and even potentially revolutionize various aspects of medical practice and medical product development. Nanotechnology is already touching upon many aspects of medicine, including drug delivery,…
Abstract Schiff base ligands ( L1 H– L8 H) have been prepared and complexed to Zn II centres. All eight complexes have been characterised by single‐crystal X‐ray diffraction methods, multinuclear NMR spectroscopy and elemental analysis. It was shown that for L1 H and L2 H trimetallic complexes of the form Zn 3 (OAc) 4…
Glassy ferromagnetism is observed in diluted magnetic semiconductor Al-doped 4H-SiC. We propose a possible explanation for the origin of ferromagnetism order that is the coeffect of sp(2)/sp(3) configuration along with the structural defects. This result unambiguously demonstrates the existence of intrinsic ferromagne…
The activation of the shape-memory effect of nanocomposites (NC) by alternating magnetic fields requires exceeding the switching temperature T s . Different factors, which can influence this process, have been investigated. The intrinsic properties of magnetic nanoparticles (MNP), their content and distribution in the…
On the tube: The coupling of diazonium ions onto single-walled carbon nanotubes is shown to proceed through a radical chain reaction by kinetic analysis of the absorption peak drop (see picture). Radical species are also revealed by ESR. Metallic (m) nanotubes play a special catalytic role in the functionalization of…
Abstract The reactions of Cu II carboxylates (valerate, 2‐methylbutyrate, hexanoate, heptanoate) with pyrazole (Hpz) in EtOH or EtOH/water solutions easily afford the triangular trinuclear copper derivatives [Cu 3 (μ 3 ‐OH)(μ‐pz) 3 (RCOO) 2 (L) x ] [R = CH 3 (CH 2 ) 3 , L = H 2 O, x = 1 for 5 ; R = CH 3 CH 2 CH(CH 3 )…
In this letter, we present a low-temperature synthesis route revealing a new type of ultrasmall CdSe nanoparticle family with exceptional narrow blue emissions between 437 and 456 nm and full width at half-maxima below 20 nm. Transmission electron microscopy characterization shows the uniformity of the nanoparticles,…
We present the structural evolution mechanism during the NiTi martensitic transformation and show the origins of this behavior in electronic and phononic anomalies. By employing highly precise all-electron density-functional theory calculations, we establish a barrierless transformation path for equiatomic NiTi consis…
Vertically aligned, dense ZnO nanorod arrays were grown directly on zinc foils by a catalyst-free, low-temperature (450-500 degrees C) oxidization method. The zinc foils remain conductive even after the growth of ZnO nanorods on its surface. The success of this synthesis largely relies on the level of control over oxy…
The self-initiated photografting and photopolymerization (SIPGP) of styrene, methyl methacrylate, and tert-butyl methacrylate on structured self-assembled monolayers (SAMs) of electron beam cross-linked omega-functionalized biphenylthiols SAMs on gold was investigated. Polymer brushes with defined thickness can be pre…
In recent years it has become apparent that knowing the average atomic structure of materials is insufficient to understand their properties. Diffuse scattering in addition to the Bragg scattering holds the key to learning about defects in materials, the topic of many recent books. What has been missing is a detailed…
This paper describes a simple approach to the synthesis of asymmetric, hybrid colloidal particles by precipitation polymerization. The key is to introduce Au or Ag colloids 2 min after (rather than before) starting the polymerization. The hybrid particles were uniform in size, and each one of them only contained one A…
Abstract Multifunctional nanostructures : By using 3‐aminopropyltrimethoxysilane as a linker, Au nanoparticles (NPs), Au shells, flowerlike Au/Pt hybrid NPs, and Ag or Au/Ag core/shell NPs could be supported on the surface of superparamagnetic Fe 3 O 4 spheres to construct hybrid nanostructures that display near‐IR ab…
Thin films constituted of poly(L-lysine) (PLL) as polycation and of the anionic polysaccharides hyaluronan (HA), chondroitin sulfate (CSA), and heparin (HEP) as polyanions with increasing sulfate contents have been investigated for their internal structure, including water content and ion pairing. Film buildup in phys…
The number of earthquakes as a function of magnitude decays as a power law. This trend is usually justified using spring-block models, where slips with the appropriate global statistics have been numerically observed. However, prominent spatial and temporal clustering features of earthquakes are not reproduced by this…
A new network model is proposed to describe the $1/f^α$ resistance noise in disordered materials for a wide range of $α$ values ($0< α< 2$). More precisely, we have considered the resistance fluctuations of a thin resistor with granular structure in different stationary states: from nearly equilibrium up to far from e…
Thin films of ${\text{TbMnO}}_{3}$ have been grown on ${\text{SrTiO}}_{3}$ substrates. The films grow under compressive strain and are only partially clamped to the substrate. This produces remarkable changes in the magnetic properties and, unlike the bulk material, the films display ferromagnetic interactions below t…
A new and systematic method for co-crystal screening has been developed, based on improvements in the understanding of the thermodynamic factors that influence co-crystal formation. This method works from the premise that pure component solubilities determine the concentration regions to screen for new co-crystals, ra…