Materials Literature
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Interfacial reactions between H 2 O 2 and metal oxides are important in several fields but are yet not fully understood. Recently, tris(hydroxymethyl)aminomethane (Tris) was used as a probe in detecting the intermediate hydroxyl radical (HO • ) during such process via the formation of formaldehyde (CH 2 O). In this wo…
ABSTRACT Natural oils are the attractive biobased alternatives for petroleum derived chemicals in the production of polymers. A series of new biodegradable polymers based on epoxidized camelina oil was synthesized and investigated. The thermal, mechanical, swelling properties, hydrolysis, biodegradation, and bioresist…
We study the fingering instability of the interface between two miscible fluids, a colloidal suspension and its own solvent. The temporal evolution of the interface in a Hele-Shaw cell is found to be governed by the competition between the nonlinear viscosity of the suspension and an off-equilibrium, effective surface…
A novel type of flexible organic field-effect transistor in which strain effects can be finely tuned continuously has been fabricated. In this novel device structure, electronic phases can be controlled both by "band-filling" and by "band-width" continuously. Finally, co-regulation of "band-filling" and "band-width" i…
We present a new design of plasmonic nanoantenna with slant gap for optical chirality engineering. At resonance, the slant gap provides highly enhanced electric field parallel to external magnetic field with a phase delay of π/2, resulting in enhanced optical chirality. We show by numerical simulations that upon linea…
A new azobenzene‐group‐containing monomer and several respective functional side‐chain polymers grafted on a methylhydrosiloxane backbone (with two different degrees of polymerization; with and without the addition of a photoreactive benzophenone derivative) are designed, synthesized, and characterized. The resulting…
By adjusting film thickness, smooth and dense Mn and Y alternately doped Ba0.6Sr0.4TiO3 (Mn/Y-BST) films have been designed and prepared by improved sol-gel method, and the structure and dielectric properties of the films have been studied. X-ray diffraction (XRD) reveals that all films grow along (110) orientation, d…
PLA/starch films were prepared by using three different solvent which is consist of chloroform, acetonitrile, and tetrahydrofuran. Similarly, composite films prepared using co-solvent of choloroform-acetonitrile (C-Ac) and choloroform- tetrahydrofuran (C-THF) were also investigated. Their properties were characterized…
A novel strategy, based on silver nanoparticles (AgNPs), has been developed for simultaneously improving: 1) photostability, 2) fluorescence emission, and 3) singlet oxygen generation ability of natural porphyrin (i.e., chlorophyll (Chl) molecules). The benefit of AgNPs as photoprotector of Chl is that they spontaneou…
We use scanning tunneling microscopy to investigate the doping dependence of quasiparticle interference (QPI) in NaFe1-xCoxAs iron-based superconductors. The goal is to study the relation between nematic fluctuations and Cooper pairing. In the parent and underdoped compounds, where fourfold rotational symmetry is brok…
Reversible switching of water-droplet adhesion between sliding and pinned states on a highly porous superhydrophobic polythiophene film is realized by adjusting electric potential. This large-area superhydrophobic polythiophene film is prepared readily by using a versatile electrodeposition method. Electrochromism alo…
Flexible polyurethane (PU) foams were prepared by replacing commercial petroleum-based polyether polyol with palm oil-based polyol up to 50 wt%. Palm oil was converted to polyol by transesterification reaction with glycerol using calcium oxide as a catalyst. PU foams were then prepared from reaction between mixtures o…
The chemisorption of hydrogen on graphene or graphite is studied within a quantum formalism involving a subsystem coupled to a phonon bath. The subsystem includes the hydrogen atom approaching the surface perpendicularly right on top of a carbon atom which puckers out of the surface. The bath includes the acoustic and…
High Resolution Image Download MS PowerPoint Slide DFT calculations with six LDA, GGA, and hybrid functionals have been performed using the CRYSTAL09 code to describe the crystal structure and vibrational spectra of Y 2 CaGe 4 O 12 cyclotetragermanate, a new optical host. Two space groups P 4/ nbm and Cmme have been c…
We show that both the extraordinarily large nonlinear response and the light-induced permanent reorientation in liquid crystals doped by the azo dye methyl red originates from the same phenomenon of modification of the charge density on the irradiated surface. The demonstration is done by applying ac voltage to the sa…
Abstract The controlled synthesis of hexaaluminates ANi y Al 12− y O 19− δ (A=Ba, La, Sr, and y =0.25, 0.5, 1) is reported by a freeze drying route. This route allows the use of moderate temperatures of approximately 1200 °C to obtain hexaaluminates of high phase purity (>80 wt %) as well as high specific surface a…
Starting from previous evidence on the crucial role of imidazolium ions, long alkyl chains, and aromatic rings in favoring the adsorption of surfactants onto carbon nanotube (CNT) walls, we have synthesized novel gemini surfactants with the aim to optimize and identify a reference structure for CNT dispersants. The ef…
Intermolecular hydrogen-bonded homologous series comprising of eight liquid crystalline complexes are isolated and characterized. Double complimentary hydrogen bonds are formed between non-mesogen adipic acid (AA) and mesogenic p-n-alkyloxy benzoic acid (nBAO), the series is referred to as AA+nBAO. Hydrogen bond forma…
The focus of this work is on the growth mechanism of ethyl lactate-based plasma polymer film (ELPPF) that could be used as barrier coatings. In such an application, the ester density of the plasma polymer has to be controlled to tune the degradation rate of the material. Our strategy consists of correlating the plasma…
Novel hybrid hydrogels composed of tag-peptides (antigens) displaying filamentous viruses and antibody-immobilized gold nanoparticles (GNPs) through specific interactions between the two components were constructed. The strength of the antigen-antibody interactions greatly affected the macroscopic mechanical propertie…