Materials Literature
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A new host compound of an aluminum lithium fluoride oxide (ALFO) was proposed for deep red phosphors based on the luminescent centers of Mn 4+ , Fe 3+ , and Cr 3+ . The characterization brought an estimated composition of Al 4 LiF 0.1 O 6.45 , indicating that fluorine was largely lost during the heat-treatment in spit…
Abstract Glass‐ceramics are multi‐phase materials that are comprised of one amorphous phase and at least one crystalline phase. Their versatile performance and properties can be engineered by alterations of the three fundamental steps – formulation and production of the amorphous base glass, nucleation, and crystalliz…
We use aligned carbon nanotube (CNT) forests as scaffolds to deposit hafnium diboride (HfB 2 ) and fabricate millimeter-thick ultrahigh-temperature composite coating. HfB 2 has a melting temperature of 3250 °C, which makes it an attractive candidate for applications requiring operation in extreme environments. Compare…
We present experiments that show that the partial wetting of droplets capped by taut elastic films is highly tunable. Adjusting the tension allows the contact angle and droplet morphology to be controlled. By exploiting these elastic boundaries, droplets can be made elliptical, with an adjustable aspect ratio, and can…
A novel series of dendron-based non-ionic amphiphiles that aggregate to form supramolecular structures have been designed and synthesized using biocompatible starting materials.
Density functional theory calculations have been performed to investigate the linear and second-order nonlinear optical (NLO) properties of titanium-based MIL-125 metal–organic frameworks in crystalline form, in which the 1,4-benzenedicarboxylate (BDC) linkers are modified by introducing different functional groups or…
Illusion devices are usually designed using transformation optics. Here, a new method is proposed to achieve optical illusions without external devices by elaborately manipulating the scattering potential of an object. In contrast to the conventional transformation optics method, which completely replaces one object b…
Abstract Plasmon enhancement in electrocatalysis was investigated on pure Au nanoparticles (AuNPs) and an AuNPs‐reduced graphene oxide (AuNPs/rGO) hybrid. Upon localized surface plasmon resonance (LSPR) excitation, hot charge carriers (hot electrons and holes) generate on the AuNPs. In the experiments, hot holes were…
Oxides bring not only new properties such as superconductivity, ferro-, pyro-, and piezoelectricity, ferromagnetism, and multi-ferroicity but also ionic and catalytic properties. Such richness arises from a strong interaction between the charge, orbital, spin, and lattice degrees of freedom. Interfacing two oxide-base…
X-ray emission spectroscopy (XES) and X-ray absorption spectroscopy (XAS) provide a unique opportunity to probe both the highest occupied and the lowest unoccupied states in matter with bulk sensitivity. In this work, a combination of valence-to-core XES and pre-edge XAS techniques are used to determine changes induce…
A longstanding controversy remains whether $\ensuremath{\gamma}\text{\ensuremath{-}}{\mathrm{B}}_{28}$ is intrinsically superhard or not, i.e., ${H}_{v}\ensuremath{\ge}40\phantom{\rule{0.16em}{0ex}}\mathrm{GPa}$. Here we perform comprehensive investigations on the mechanical properties of $\ensuremath{\gamma}\text{\en…
In this study, FeNi/Ag cathode was made for aluminium air battery. For this purpose, FeNi-mesh electrode surfaces were treated in two different ways (chemical and electrochemical deposition), with noble metal silver having a high catalytic activity. The optimum time for both methods was determined. The electrochemical…
Abstract There is interest in minimizing or eliminating the use of Pt in catalysts by replacing it with more widely abundant and cost‐effective elements. The alloying of Pt with non‐noble metals is a potential strategy for reducing Pt use because interactions between Pt and non‐noble metals can modify the catalyst str…
The electronic and thermoelectric properties of four ternary chalcogenides with space group Pnma, namely, Cu(Sb,Bi)(S,Se)2, are investigated up to 8 GPa hydrostatic pressure using density functional theory combined with semiclassical Boltzmann theory. The effects of the van der Waals interaction are included in all ca…
Intense single-frequency ultrasonic waves generate cavitation clouds in liquids, while at the same time, the pulsating cavitation bubbles emit broadband noise. In gas-containing liquids such as soda and beer, an ultrasonic source with a driving frequency of 20 kHz is shown to easily stimulate the formation of dense ca…
Abstract Black phosphorus (BP) has received much attention owing to its fascinating properties, such as a high carrier mobility and tunable band gap. However, these advantages have been overshadowed by the fast degradation of BP under ambient conditions. To overcome this obstacle, the exact degradation mechanisms need…
We report a method to characterize z-directional surface roughness of chemical vapor deposition-grown graphene monolayers with the aid of surface-enhanced Raman scattering spectral signatures of “out-of-plane” phonon modes observed at Au nanoparticle (NP)–graphene–Au thin film junctions. This method reveals that inten…
Two-dimensional (2D) hexagonal boron nitride (h-BN) is considered as an ideal dielectric layer or substrate for other 2D heterostructure electronic devices. However, reported 2D h-BN films consist mostly of small sized and randomly oriented h-BN domains, resulting in a high density of grain boundaries during coalescen…
Abstract Highly ordered pattern formation of block copolymers (BCPs) within nanoscale templates is of great interest for generating diverse ordered nanostructures. Here, introduced is a combined methodology of nanotransfer printing (nTP) and BCP self‐assembly to guide the formation of spherical nanodots within a print…
Amyloids are highly ordered beta sheet rich stable protein aggregates, which have been found to play a significant role in the onset of several degenerative diseases such as Alzheimer's disease, Huntington's disease, Parkinson's disease, Type II diabetes mellitus and so on. Aggregation of proteins leading to amyloid f…