Materials Literature
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The AB-BA domain wall in gapped graphene bilayers is a rare naked structure hosting topological electronic states. Although it has been extensively studied in theory, a direct imaging of its topological edge states is still missing. Here we image the topological edge states at the graphene bilayer domain wall by using…
Electronic traps at the inorganic-organic interface of colloidal quantum dots (QDs) are detrimental to their luminescent properties. Several types of interface traps were identified for single-crystalline CdSe/CdS core/shell QDs, which were all found to be extrinsic to either the core/shell structure or their optical…
The realization of low-cost photodetectors with high sensitivity, high quantum efficiency, high gain and fast photoresponse in the visible and short-wave infrared remains one of the challenges in optoelectronics. Two classes of photodetectors that have been developed are photodiodes and phototransistors, each of them…
The recent discovery of biomass-derived carbon quantum dots (CQDs) offers the potential to extend the sensing and imaging capabilities of quantum dots (QDs) to applications that require biocompatibility and environmental friendliness. Many studies have confirmed the exciting optical properties of CQDs and suggested a…
Abstract Small, red Fe 2 SeO single crystals in two modifications were obtained from a CsCl flux. The metastable α‐phase is pseudo‐tetragonal (Cmce, a =16.4492(8) Å, b =11.1392(4) Å, c =11.1392(4) Å), whereas the β‐phase is trigonal (P3 1 , a =9.8349(4) Å, c =6.9591(4) Å)) and thermodynamically stable within a narrow…
ABSTRACTSingle crystals of Anthranilic acid (AA) have been successfully grown and purity of materials has been increased by repeated recrystallization process. Single crystals have been grown by slow evaporation technique. The grown crystal was characterized by Single crystal X-Ray diffraction, Powder XRD, FTIR, UV-Vi…
In this work, a reaction system was designed and built to carry out the aerobic oxidation reaction of cyclohexane to obtain cyclohexanol and cyclohexanone using cobalt incorporated in SBA-3 materials as catalysts, which were tested on this reaction using the system. The design comprehended the determination of the wal…
Abstract We designed a versatile inorganic probe based on functionalized TiO 2 nanoparticles for labeling immunoreagents and developing immunological tests. Similarly to enzymatic probes traditionally used in immunoassay, the TiO 2 probe could be covalently linked to antigens or antibodies and exploited as the signal…
The geodesic (shortest) pathways through the potential energy landscape of a liquid can be thought of as defining what its dynamics would be if thermal noise were removed, revealing what we have called the "inherent dynamics" of the liquid. We show how these inherent paths can be located for a model liquid crystal for…
Abstract The effect of annealing on the acidity and water uptake of Nafion films has been studied by using the acidity sensing fluorophore 2‐(4′‐pyridyl)benzimidazole (4PBI). The difference in acidity and the microenvironment of the fluorophore in annealed and nonannealed films is brought out in this study. The anneal…
A solid solution of (1− x )Pb(Lu 1/2 Nb 1/2 )O 3 – x PbTiO 3 with composition of 0.01 ≤ x ≤ 0.08 have been prepared successfully. XRD analysis indicates the crystal structure adopts an orthorhombic ( O ) phase in 0.01 ≤ x ≤ 0.06 interval and becomes the coexistence of O and rhombohedral ( R ) phase at x = 0.07, then t…
Plasma versus thermal annealing for the Au-catalyst growth of ZnO nanocones and nanowires on Al-doped ZnO buffer layers, Güell, Frank, Martínez-Alanis, Paulina R, Roso, Sergio, Salas-Pérez, Carlos I, García-Sánchez, Mario F, Santana, Guillermo, Monroy, B Marel
Abstract The synthesis, the structural characterization and the luminescence spectroscopy of new Ln(III) nitrate complexes (Ln = La, Eu, Gd, Tb and Lu) with the quinoline‐based N, N’‐bis(2‐quinolylmethylidene)‐ 1,2‐( R,R + S,S )‐cyclohexanediamine, L1 and N, N’‐bis(2‐quinolylmethyl)‐ 1,2‐( R,R + S,S )‐cyclohexanediami…
The effect of alkaline and acidic pretreatment steps on the surface chemical composition and adhesion properties of ZnMgAl‐alloy coated steel was investigated by means of spectroscopic methods, scanning Kelvin probe (SKP) and peel test measurements. The spectroscopic results indicate that the surface film composition…
It is of great fundamental and practical significance to endow Janus particles with various field-responsive properties. In this study, a new strategy with a wide range of application possibilities is developed to fabricate JPs composed of a methacrylate-based azo polymer, polystyrene, and Fe3 O4 nanoparticles. The JP…
In this study, polyamide 6/polystyrene in situ microfibrillar blends are prepared via anionic polymerization of ε‐caprolactam in a twin screw extruder. Scanning electron microscope analysis reveals that microfibrillated PA6 dispersed phase, which is continuous and preferentially oriented parallel to the extrusion dire…
Using ab initio density functional calculations, we have investigated the stability and electronic structure of pure and oxygen doped semiconducting Cu 3 N. The oxygen can be accommodated in the system without structural instability as the formation energy either decreases when oxygen substitutes nitrogen, or remains…
The remarkable robustness of high-temperature superconductors against disorder remains a controversial obstacle towards the elucidation of their pairing state. Indeed, experiments report a weak suppression rate of the transition temperature ${T}_{c}$ with disorder, significantly smaller than the universal value predic…
We investigate optical magnetism and optical activity in a simple planar metamolecule composed of double U-shaped metal split ring resonators (SRRs) twisted by 90° with respect to one another. Compared to a single SRR, the resonant energy levels are split and strong magnetic response can be observed due to inductive a…
Unsymmetrical phthalocyanines with a low symmetry can exhibit unique and intriguing properties that can facilitate their applications in certain disciplines. The synthesis of these compounds, however, has posed a great difficulty. A novel and unprecedented approach for phthalocyanine synthesis is reported that involve…