Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Regular arrays of magnetic perovskite dots less than 100 nm in diameter (see Figure) are made by a process incorporating pulsed laser deposition, patterning with electron-beam lithography, and exposure to neutralized 200 eV Ar ions. The nanodots preserve the magnetic properties of large-area magnetic perovskite films,…
This paper focuses on the interactions between cysteamine-stabilized CdTe nanocrystals [CdTe(CA) NCs] and thioglycolic-acid-stabilized CdTe nanocrystals [CdTe(TGA) NCs]. These interactions were examined by the absorption, continuous, and time-resolved photoluminescence (PL) spectra of the electrostatically mixed and t…
First-principles calculations of the structural relaxation and the phonons at $\ensuremath{\Gamma}$ are presented for $\mathrm{Zn}\mathrm{Ge}{\mathrm{N}}_{2}$ and compared with those in GaN in terms of Brillouin zone folding effects. Excellent agreement is obtained between various computational methods and experimenta…
The surface reactions of atomic and molecular oxygen with carbon phosphide films have been studied using X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). Carbon phosphide films were produced by ion implantation of trimethylphosphine into polyethylene. Atmospheric oxidation of carbon phosphide…
Herein, we report the synthesis of a molecular clip with TTF side-walls and its binding behavior towards electron-deficient guests, namely the formation of macrocycle/molecular-clip supramolecular complexes in solution. Four different sets of external stimuli--the K(+)/[2.2.2]cryptand, NH(4) (+)/Et(3)N and (p-BrPh)(3)…
Abstract Summary: Novel inorganic‐organic hybrid materials composed of cadmium sulfide (CdS) semiconducting nanocrystals and regenerated cellulose (RC) were prepared by using in situ synthesizing method. Cellulose was dissolved in a 6 wt.‐% NaOH/4 wt.‐% urea/thiourea aqueous solution at low temperature followed by add…
A void apart! A clathrate based on zinc octa(2,6-diisopropylphenoxy)phthalocyanine contains solvent-filled voids of exceptionally large volume (>8 nm3; see picture for the packing arrangement). Each nanovoid is enclosed by a cubic assembly of six phthalocyanine molecules and contains 18 molecules of water and an estim…
The magnetoresistance (MR) behavior of epitaxial magnetite ${\mathrm{Fe}}_{3}{\mathrm{O}}_{4}$ grown on low-vicinal (small miscut) and high-vicinal (large miscut) MgO substrates is compared. Magnetization measurements on ${\mathrm{Fe}}_{3}{\mathrm{O}}_{4}$ films on high-vicinal substrates showed reduced magnetic momen…
Dissipative particle dynamics (DPD) is a mesoscopic simulation method for studying hydrodynamic behavior of complex fluids. Ideally, a mesoscopic model should correctly represent the thermodynamic and hydrodynamic properties of a real system beyond certain length and time scales. Traditionally defined DPD quite succes…
The classification of phase transitions in first-order and second-order (or continuous) ones is widely used. The nematic-to-isotropic (NI) transition in liquid crystals is a weakly first-order transition, with only small discontinuities in enthalpy and specific volume at the transition which are not always easy to mea…
Abstract Summary: CM‐chitin and CM‐chitosan films were successfully crosslinked by microwave treatment. Crosslinking of the microwave‐treated CM‐chitin films involved mainly the carboxylate and the secondary alcohol groups, while crosslinking of microwave‐treated CM‐chitosan films involved the carboxylate and the amin…
Six amphiphilic diblock copolymers based on methoxy poly(ethylene glycol) (MePEG) and poly(delta-valerolactone) (PVL) with varying hydrophilic and hydrophobic block lengths were synthesized via a metal-free cationic polymerization method. MePEG-b-PVL copolymers were synthesized using MePEG with Mn = 2000 or Mn = 5000…
Current interest in biomaterials for tissue engineering and drug delivery applications have spurred research into self-assembling peptide amphiphiles (PAs). Nanofiber networks formed from self-assembling PAs can be used as biomaterial scaffolds with the advantage of specificity by the incorporation of peptide-epitopes…
Diatoms are unicellular eucaryotic algae with cell walls containing silica, intricately and ornately structured on the nanometer scale. Overall silica structure is formed by expansion and molding of the membrane-bound silica deposition vesicle. Although molecular details of silica polymerization are being clarified, w…
Mixed-ion and electron-conducting perovskite membranes are used to produce oxygen-enriched air (see picture). These membranes are thermally and mechanically stable at high temperatures (>875 °C) over a long period of time, thus making them suitable for industrial processes. Oxygen concentrations of the enriched air ty…
One-dimensional TTF assemblies have been obtained through the design of low molecular-weight gels, which show a characteristic absorption band at around 1750 nm upon I2 doping, assignable to a mixed-valence state of the TTF assemblies.
We have studied the transport properties of a molecular device composed of donor and acceptor moieties between two electrodes on either side. The device is considered to be one-dimensional with different on-site energies and the non-equilibrium properties are calculated using Landauer's formalism. The current-voltage…
In Part I of this set of two papers, a model of mesoscopic plasticity is developed for studying initial-boundary value problems of small scale plasticity. Here we make qualitative, finite element method-based computational predictions of the theory. We demonstrate size effects and the development of strong inhomogenei…
A rational building-block approach was employed to construct organometallic/polyoxometalate (POM) hybrids in which POM clusters and transition-metal complexes are linked by a π-conjugated bridge. The synthetic strategy for molecular and polymeric hybrids—POM functionalization with iodo-bearing groups, attachment of a…
We use the replica method to study the ideal glass transition of a liquid of identical hard spheres. We obtain estimates of the configurational entropy in the liquid phase, of the Kauzmann packing fraction phi(K), in the range of 0.58-0.62, and of the random close packing density phi(c), in the range of 0.64-0.67, dep…