Materials Literature
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An ab-initio-based approach, that includes strain, ferroelectricity, and tilting of the oxygen octahedra as degrees of freedom, is developed to investigate temperature-versus-misfit-strain and temperature-versus-composition phase diagrams of $\text{Pb}(\text{Zr},\text{Ti}){\text{O}}_{3}$ ultrathin films near their mor…
Growth enhancers, most notably water, have been reported to increase catalyst activity, despite constituting 0.02% of the growth ambient, resulting in dramatic increases in vertically aligned carbon nanotube (CNT) forests. We demonstrate a surprising second function of the growth enhancer, i.e., its ability to control…
We measured the dynamic structure factor of the liquid and glassy phases of the LiCl-6H(2)O solution by means of inelastic scattering of radiation in the visible, UV, and x-ray range, between 1 GHz and 10 THz, and by means of photon-correlation spectroscopy, between 0.01 Hz and 20 kHz. The measurements were performed…
Abstract We report on near‐field optical imaging of single‐walled carbon nanotubes (SWNTs), observing photoluminescence (PL) quenching at nanotube ends and defects. The extension of reduced PL reflects the exciton diffusion length of about 100 nm, which can be directly visualized with our technique. Additionally, we m…
We study the symmetry of Cooper pair in a two-dimensional Hubbard model with the Rashba-type spin-orbit interaction as a minimal model of electron gas generated at a heterointerface of ${\text{SrTiO}}_{3}/{\text{LaAlO}}_{3}$. Solving the \'Eliashberg equation based on the third-order perturbation theory, we find that…
We investigated the nonlinear optical properties of new BaAlBO(3)F(2)(BABF) crystal. The high quality BABF is nonhygroscopic and possesses a moderate birefringence suitable for UV light generation. On the basis of its refractive index dispersion curves, it is inferred that BABF has great potential applications nonline…
Hybrid magnetic nanostructures with high coercivity have immense application potential in various fields. Nickel (Ni) electrodeposited inside Cobalt (Co) nanotubes (a new system named Ni @ Co nanorods) were fabricated using a two-step potentiostatic electrodeposition method. Ni @ Co nanorods were crystalline, and they…
The thermal dehydroxylation of kaolinite has been reexamined using small sample weights, a homogeneous particle size distribution and high‐vacuum conditions in order to reduce the influences of heat and mass‐transfer phenomena. The controlled rate thermal analysis (CRTA) technique, which was specially developed to min…
OBJECTIVE: The purpose of this study was to investigate whether, at dynamic MRI of the upper abdominal organs, contrast enhancement with gadoxetic acid, a hepatobiliary contrast agent, is comparable with that achieved with an extracellular contrast agent. SUBJECTS AND METHODS: Dynamic gadoxetic acid-enhanced MRI of th…
The linear and nonlinear absorption properties of a squaraine-bridged porphyrin dimer (POR-SQU-POR) are investigated using femto-, pico-, and nanosecond pulses to understand intramolecular processes, obtain molecular optical parameters, and perform modeling of the excited-state dynamics. The optical behavior of POR-SQ…
Bacterial microcompartments (BMCs) are large intracellular bodies that serve as simple organelles in many bacteria. They are proteinaceous structures composed of key enzymes encapsulated by a polyhedral protein shell. In previous studies, the organization of these large shells has been inferred from the conserved pack…
Abstract Hybrid composites of polypropylene (PP), reinforced with short banana and glass fibers were fabricated using Haake torque rheocord followed by compression molding with and without the presence maleic anhydride grafted polypropylene (MAPP) as a coupling agent. Incorporation of both fibers into PP matrix result…
Forces of interaction within single pairs of poly(2-vinylpyridine) (P2VP) grafted colloids have been measured by optical tweezers (OT) with an extraordinary resolution of ±0.5 pN. Parameters to be varied are the concentration and type of salt (KCl, CaCl 2, and LaCl 3 ) of the surrounding medium as well as its pH. The…
Colloidal PbTe nanocrystals are reacted with AuCl3 in the presence of dodecylamine and tetraoctylammonium bromide in a toluene solution. At room temperature, only homogenous nucleation of isolated Au nanocrystals in solution is observed. At higher temperatures (i.e. 60 °C or higher) the gold ions/atoms are able to dif…
Step aside, sol–gel! Nanoscale tungsten oxide with large BET surface area is available through the presented in situ twin polymerization method. In only one process step, nanostructured hybrid materials are synthesized from WCl6 and cationic polymerizable aryl methanols. This procedure forms a bridge between the non-a…
The Fe(3)O(4) grain of a Fe(3)O(4)/Au hybrid nanocrystal encapsulated in a silica nanosphere was rapidly and exclusively dissolved through a reductive process facilitated by the attached Au grain, resulting in the formation of a nanorattle structure which has utility as a nanoreactor to template the growth of nanocrys…
A cyclic porphyrin dimer (Ni 2 −CPD Py ) linked by butadiyne moieties bearing 4-pyridyl groups includes a C 60 molecule inside its cavity in solution to give a 1:1 inclusion complex (C 60 ⊂Ni 2 −CPD Py ). The charge-transfer (CT) band is observed at 645 nm in the UV−vis absorption spectrum of the solution of C 60 ⊂Ni…
We propose a fast two-step switching method of a homogeneous-aligned liquid crystal (LC) cell, where a trigger pulse is applied to align LCs vertically for a moment before they are in-plane switched to show a bright state. Because LCs aligned vertically by a trigger pulse are in a transient state rather than the stabl…
Rod and sphere-like CeO(2) particles were obtained via a supercritical solvothermal method using CeCl(3).7H(2)O and Ce(NO(3))(3).6H(2)O as cerium sources in ethanol and methanol at 400 degrees C for 15 min followed by calcination in air. The rodlike particles were 200-400 nm in diameter and 1-2 mum in length. The sphe…
An advanced slot antenna was developed and the enlargement of surface wave plasma was experimentally investigated using the array configuration of slot antennas for large-area nanocrystalline diamond (NCD) film depositions. An original-geometry slot antenna with an annular shape, designed in this work, permitted broad…