Materials Literature
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The synthesis of extremely small mesoporous silica nanoparticles via a specific co-condensation process with phenyl groups is demonstrated. The suspensions are ideally suited for the production of nanoscale thin films by spin-coating. Thanks to the small particle size and the resulting low surface roughness, the films…
The solid-on-solid kinetic Monte Carlo model of Lasaga and Blum [Geochim. Cosmochim. Acta 50, 2363 (1986)] for dislocation-controlled etch-pit growth has been extended to the growth of etch pits under the control of multiple dislocations and point defects. This required the development of algorithms that are O(10(3))-…
The novel azobenzene-based monomer 1 was prepared, equipped with the necessary functionality to undergo simultaneous dynamic exchange processes: hydrazone exchange and photoisomerization. Acid-promoted hydrolysis of the azobenzene building block produced a dynamic combinatorial library of cyclic oligomers, while multi…
We show that Andreev reflection in a junction between ferromagnetic (F) and superconducting (S) graphene regions is fundamentally different from the common FS junctions. For a weakly doped F graphene with an exchange field $h$ larger than its Fermi energy ${E}_{F}$, Andreev reflection of massless Dirac fermions is ass…
The effects of various cations ( , , , , , , , , , , and ) were examined as dopants into the B site of perovskite barium zirconate. The solubility of In, Yb, Tm, Er, and Ho, whose ionic radii are close to that of zirconium ion, into the B site is more than 0.075 at . In contrast, when there is a large difference of io…
Abstract Cellulose nanocomposites containing high contents of Fe 3 O 4 nanoparticles were successfully prepared with regenerated cellulose films as a matrix and mixture solutions of Fe 2+ /Fe 3+ as precursors. The structure and properties of the magnetic nanocomposite films were investigated with X‐ray diffraction, sc…
Abstract In this research, fully environment‐friendly, sustainable and biodegradable composites were fabricated, using wheat straw and rice husk as reinforcements for thermoplastics, as an alternative to wood fibers. Mechanical properties including tensile, flexural, and impact strength properties were examined as a f…
Reversible photomagnetic effects were demonstrated at room temperature by the use of a new iron(II) complex t100c0-[Fe()3](BF4)(2).3H2O ( =phenyl(2-pyridin-2-yl-3H-benzoimidazol-5-yl)diazene), based on the strategy of the so-called "ligand-driven light-induced spin change" (LD-LISC) effect. The complex showed thermal…
In this work, the polymorph transformation of the metastable α to the stable β polymorph of l -glutamic acid at 45 °C was monitored using in situ Raman spectroscopy. In a series of seeded transformation experiments, the effect of different operating conditions on the transformation was studied. Both increasing seed ma…
We investigate the effect of the ordering temperature (T) and film thickness (h(f)) on the surface morphology of flow-coated block copolymer (BCP) films of asymmetric poly(styrene-block-methyl methacrylate). Morphology transitions observed on the ordered film surface by atomic force microscopy (AFM) are associated wit…
The binary Al-Mn system has been critically evaluated based upon available phase equilibrium and thermodynamic data, and optimized model parameters have been obtained giving the Gibbs energies of all phases as functions of temperature and composition. The liquid solution has been modeled with the modified quasichemica…
Despite tremendous activity in employing the N- V- center in a host of quantum technology applications, the electronic and optical properties of the system are still not theoretically well understood. We have conducted density functional theory calculations of the N- V- system which show convergence at the 3 x 3 x 3 s…
Dielectric measurements and modulus analysis have been made to investigate the effects of grain size, frequency and temperature for nanostructured Mn–Zn ferrite. The anomalous frequency dependence of dielectric loss (tan δ) can be attributed to the resonance effect and also to the presence of both n- and p-type charge…
We experimentally investigated a "molecular-linear-motor" system consisting of a capsule-like carbon nanotube (CNT) in the interior space of a host CNT. Transmission electron microscopy revealed the capsule traveled back and forth between both ends of the hollow space along the axial direction and rotated simultaneous…
Two-component systems capable of self-assembling into soft gel-phase materials are of considerable interest due to their tunability and versatility. This paper investigates two-component gels based on a combination of a L-lysine-based dendron and a rigid diamine spacer (1,4-diaminobenzene or 1,4-diaminocyclohexane). T…
Nanosized hydrous Ru O 2 /Ketjen Black (KB) composites were prepared using an in situ sol-gel process induced by ultracentrifugal mechanical force for supercapacitors. The hydrous Ru O 2 in the prepared samples were nanosized particles ca. 2 nm and were highly dispersed on conductive carbon (KB) even at high hydrous R…
Magnetically doped Si and Ge nanowires have potential application in future nanowire spin-based devices. Here, we report a supercritical fluid method for producing single crystalline Mn-doped Ge nanowires with a Mn-doping concentration of between 0.5-1.0 atomic % that display ferromagnetism above 300 K and a superior…
A general phenomenological theory is presented for the phase behavior of ferromagnetic superconductors with spin-triplet electron Cooper pairing. The theory accounts in detail for the temperature-pressure phase diagram of ZrZn$_2$, while the main features of the diagram for UGe$_2$ are also described. Quantitative cri…
The history of the study of the anomalies of liquid water, from the 17th century up to the present, is reviewed and the current view on the origin of these anomalies is summarized. The hypothesis of the multiple liquid-liquid transitions of water in the supercooled region is consistent with the available experimental…
Porous carbon materials have been prepared using chemical vapor deposition of ethylene and acetonitrile on zeolite Y templates with the subsequent removal of the template. The use of zeolite templates enabled tuning of the carbon chemistry, microstructure, and specific surface area while maintaining ordered pores and…