Materials Literature
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Lichtspiele: Ein organisches Molekül mit Pyren- und Rhodamin-B-Chromophoren, die über eine Peptidbrücke verbunden sind (siehe Struktur), bildet ein mechanochromes Material, dessen Fluoreszenzfarbe durch mechanisches Zermahlen von Blau über Blaugrün zu Rötlich geschaltet werden kann. Die beobachtete Dreifarbenschaltung…
The objective of this study was to prepare chitosan and starch composite films by the addition of 0–3 wt% graphene nanosheets. The film's tensile strength (TS), tensile modulus (TM), elongation at break ( E ), moisture uptake (Mu), and water vapor transmission rate (WVTR) were investigated. The surface morphology of t…
Surface-piercing vegetation often captures particles that flow on the water surface, where surface tension forces contribute to capture. Yet the physics of capillary capture in flow has not been addressed. Here we model the capture of floating particles by surface-piercing collectors at moderately low Reynolds numbers…
A new NH 3 -reduction method was developed for the preparation of Ni–Ce 0.12 Zr 0.88 O 2 catalysts with different Ni loadings (5, 10, and 15 wt %). The reduction of the catalysts was performed in a tube furnace with NH 3 or H 2 . The catalysts were characterized using Brunauer–Emmett–Teller, inductively coupled plasma…
Glass fiber-reinforced epoxy resin (GFRE) composites filled with aluminum nitride (AlN) powder were fabricated, and their thermal and electrical properties were investigated. It is observed that with the increasing percentage of AlN particles, there is a significant enhancement in thermal conductivity and micro-hardne…
ABSTRACT The effect of peroxide on the thermal and crystallization properties of high‐density polyethylene (HDPE) and HDPE/polypropylene (PP) blends has been investigated using differential scanning calorimetry and X‐ray diffraction techniques (XRD). Gel permeation chromatography (GPC) was also employed to study the m…
DNA hybridization was electrically detected by graphene field-effect transistors. Probe DNA was modified on the graphene channel by a pyrene-based linker material. The transfer characteristic was shifted by the negative charges on the probe DNA, and the drain current was changed by the full-complementary DNA while no…
An efficient phototriggered Diels-Alder conjugation is utilized to graft in an effective and straightforward approach poly(trifluoro ethyl methacrylate) (Mn = 3700 Da, Đ = 1.27) and a model peptide (GIGKFLHS) onto thin hyaluronan films and cellulose surfaces. The surfaces were functionalized with an o-quinodimethane m…
The hexagonal boron nitride (h-BN) is traditionally considered to be inert. In sharp contrast to the inert behavior of free-standing hexagonal boron nitride (h-BN), we propose the catalytic property of h-BN monolayer on Ni(111) substrate using first-principles density functional theory investigation. The interaction o…
Understanding the precise nature of a surface or interface is a key component toward optimizing the desired properties and function of a material. For semiconductor nanocrystals, the surface has been shown to modulate fluorescence efficiency, lifetime, and intermittency. The theoretical picture of a nanocrystal surfac…
The interaction of adenine with silver surfaces has been investigated using density functional method. Two isomers of N9H and N7H were included to model surface species. Considering the complexity of silver surfaces in surface-enhanced Raman spectroscopy, neutral and positive silver clusters were used to mimic the sub…
Amide proton transfer (APT) imaging is one of the chemical exchange saturation transfer (CEST) imaging methods which images the exchange between protons of free tissue water and the amide groups (-NH) of endogenous mobile proteins and peptides. Previous work suggested the ability of APT imaging for characterization of…
Not just any old iron ion: A linear, two-coordinate ionic Fe(I) complex with a S=3/2 ground state has a large energy barrier for magnetization reversal, Ueff =226 cm(-1) , and undergoes slow magnetic relaxation in the absence of an applied magnetic field. The preparation of complexes with these properties is a step to…
This article evaluates the mechanical properties of vacuum-infused unidirectional plant fiber composites (PFRPs), composing of bast fiber yarns and thermoset matrices. PFRPs are found to have lower fiber volume fractions than E-glass composites (GFRPs). Apart from the expected (30–40%) lower density of PFRPs, they hav…
Bimetallic surfaces have been found to greatly improve the performance of numerous chemical processes due to synergistic interactions between the metal components. To be able to tailor the adsorption of aromatic molecules of these surfaces, the synergistic interactions within the surface and their effects on adsorbate…
Here, we report the synthesis and separation of Au 30 ( tert -thiol) 18 ( tert -thiol = tert- butanethiol and 1-adamantanethiol) from a mixture of sizes of bulky-ligated nanoparticles. With precisely 30 gold metal atoms and 18 tertiary butyl ligands, this new 30 Au atom molecule is assigned a formula based on results…
A lysine based peptide amphiphile (PA) is designed and synthesized for efficient water immobilization. The PA with a minimum gelation concentration (MGC) of 1% w/v in water shows prolonged stability and can also efficiently immobilize aqueous mixtures of some other organic solvents. The presence of a free amine induce…
ABSTRACT The novel organic/inorganic conductive nanocomposites were synthesized via emulsion polymerization using sodium dodecyl sulfate as an anionic emulsifier and ammonium persulfate as an oxidant. The structure, morphology, and properties of the nanocomposite were characterized by Fourier transform infrared spectr…
We report the structural, dielectric, and multiferroic properties of single-phase Y and Zr co-doped BiFeO3 (BFO) ceramics. Enhancement in dielectric properties, frequency independence, and ferroelectric properties are observed in co-doped BFO due to the reduction of oxygen vacancies by co-doping. Co-doped samples exhi…
This paper investigates the deformation of ferrofluid marbles in the presence of a permanent magnet. Ferrofluid marbles are formed using a water-based ferrofluid and 1 μm hydrophobic polytetrafluoride particles. A marble placed on a Teflon coated glass plate deforms under gravity. In the presence of a permanent magnet…