Materials Literature
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We report on the application of a magnetic composite metamaterial. The magnetic response of the metamaterial in the light region of the spectrum can realize the Brewster condition for $s$-polarized light. By introducing a uniaxial magnetic metamaterial consisting of stacked two-dimensional arrays of split-ring resonat…
Soot particles vary in pore structure, surface properties, and content of authigenic (native) extractable organic chemicals. To better understand the effects of these properties on sorption, aqueous sorption isotherms for 14C-labeled phenanthrene and 1,2,4-trichlorobenzene were obtained for four soots of varying prope…
Poly(N-isopropylacrylamide)s with imidazole endgroups were used to separate a histidine-tagged protein fragment directly from a crude cell lysate. The polymers display a lower critical solution temperature that can be tuned to occur at a range of subambient temperatures. UV-visible spectra indicated differences in the…
In the present paper, the nature of the fragility of liquids with a developed H-bond network is investigated. It is shown that the effective activation energy of the shear viscosity $\ensuremath{\eta}$ and the fragility parameter defined as $m={\phantom{\ensuremath{\mid}}d\phantom{\rule{0.2em}{0ex}}\mathrm{log}\phanto…
A surfactant ion-pair complex, [Ru(bpy)(2)L][Eu(NTA)(4)](2) (in which L = 1-docosyl-2-(2- pyridyl)benzimidazole, bpy = 2,2'-bipyridine, and NTA = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedionato) has been synthesized. The surface pressure-area isotherm measurements show that the complex forms a stable Langmuir film at…
The single file diffusion in a circular channel of millimetric charged balls is studied. The evolution in time of the mean square displacement is shown to be subdiffusive, but slower than the powerlike t1/2 behavior observed in circular colloidal systems or predicted in one-dimensional infinite systems.
Low viscosity, photocurable liquids are demonstrated as ideal materials for the formation of pillar arrays generated spontaneously by field-assisted assembly. Pillars form spontaneously via electrohydrodynamic instabilities that arise from the force imbalance at a film−air interface generated by an applied electric fi…
Brought to light: The light sensitivity of photolabile protecting groups of the nitrophenylpropoxycarbonyl (NPPOC) type was enhanced by up to a factor of 25. This was achieved by covalently linking the protecting group to a sensitizer with a much better absorptivity and the ability to transfer its electronic excitatio…
Silica-coated silver nanowires can be chemically treated to produce a "peapod" architecture in which silver peas are embedded in silica pods. The silver "pea" dimension and interparticle spacings are controllable down to approximately 50 nm. This architecture is potentially useful for chemical sensing, plasmonic, or c…
Quasielastic neutron scattering combined with deuteration labeling has allowed us to follow selectively the dynamics of the hydrogens of poly(ethylene oxide) (PEO, T g ≈ 220 K) in a blend with poly(vinyl acetate) (PVAc, T g = 315 K) (20% PEO/80% PVAc in weight, = 280 K). Temperatures between −10 K and + 120 K have bee…
The tetrabutylammonium salt of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) is soluble in dichloromethane, and the general properties of this compound have been investigated as function of various added acids HX (X = Cl, Br, I, CF(3)COO, CF(3)SO(3), TFPB) through UV-vis absorption spectroscopy, steady state…
We have investigated the high-pressure and high-temperature behavior of $\mathrm{Ge}{\mathrm{O}}_{2}$ with the help of extensive molecular dynamics simulations. Our calculations show that $\ensuremath{\alpha}\text{\ensuremath{-}}\mathrm{Ge}{\mathrm{O}}_{2}$ transforms reversibly to a denser and higher-coordinated (Ge-…
The addition of carbenes CX(2) (X=H, Cl) to single-walled carbon nanotubes (SWNTs) was investigated by density functional theory and finite, hydrogen-terminated nanotube clusters or periodic boundary conditions in conjunction with basis sets of up to polarized triple-zeta quality. For armchair [(3,3) to (12,12)] and z…
Abstract Nanocrystals and their ordered arrays hold many important applications in fields such as catalysis, surface‐enhanced Raman spectroscopy based sensors, memory storage, and electronic and optical nanodevices. Herein, a simple and general method to synthesize ordered, three‐dimensional, transparent gold nanocrys…
Tensile and impact properties of compression molded unsaturated polyester/jute composites were investigated as a function of fiber content and orientation. Both unidirectional fiber composites with 0-50% weight fiber content and a randomly distributed short-fiber composite with 30% w/w were manufactured. The unidirect…
Spontaneous assembly of long chains of nanoparticles (NPs) has been experimentally observed for many different materials including nanocolloids of semiconductors, metal oxides, and metals. While the origin of dipole moment in various colloids can be different, a universal explanation of chain assembly can be provided…
The compounding of recycled polypropylene (RPP) and wood saw dust (WSD) are carried out using five different filler loadings (0, 10, 20, 30, 40, and 50%) with three WSD filler sizes (100, 212, and 300 mm). The composites are mixed and extruded using Haake Rheodrive 500 twin screw extruder. The mechanical and water abs…
Most metallopolymers based on kinetically labile transitionmetal complexes are polyelectrolytes and dissolve in polar, coordinating solvents only. In these solutions, solvent molecules can displace the metallopolymers' original ligands and thus cause decomposition. Consequently, such systems are very difficult to char…
Polysorbate 80 (Tween 80) has been widely used as an emulsifier with excellent effects in nanoparticles technology for biomedical applications. This work was thus triggered to synthesize poly(lactide)/Tween 80 copolymers with various copolymer blend ratio, which were synthesized by ring-opening polymerization and char…
The adsorption of Pt(n)() (n = 1-3) clusters on the defect-free anatase TiO(2)(101) surface has been studied using total energy pseudopotential calculations based on density functional theory. The defect-free anatase TiO(2)(101) surface has a stepped structure with a step width of two O-Ti bond distances in the (100)…