Materials Literature
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Block copolymer micelle lithography is known for producing ordered and uniform nanostructures. In this report, we have combined different types of block copolymer to produce two interpenetrating lattices of micelle nanoreactors, further extending the capacity of block copolymer micelle lithography. Using polystyrene-b…
In this study, we examined the influence of surfactants on the adsorption of polymers on cotton fibers. The extent of polymer adsorption on cotton was determined directly by means of fluorescence spectroscopy using fluorescently labeled polymers. The investigation of polymer adsorption in the presence of different typ…
This paper provides a new approach for mapping the relative stability of intermetallic compounds. We quantitatively assess the collective role of numerous chemical and bonding parameters that govern the stability of these compounds (which we call 'genes') using the principles of information entropy. It is shown that o…
An atomistic view on Johari–Goldstein secondary β-relaxation processes responsible for structural relaxation far below the glass transition temperature (Tg ) in network glasses is developed for the archetypal chalcogenide glass, As20Se80, using positron annihilation lifetime, differential scanning calorimetry, Raman s…
Polysulfonamide/nano titanium dioxide (PSA/nano-TiO2) composite spinning solutions with various nano-TiO2 mass fractions were prepared using the solution blending method. The corresponding composite fibers were developed by wet-spinning technology and the composite membranes were prepared using the digital spin-coatin…
This article presents the effect of filler loading on compounding torques as well as mechanical properties of polypropylene/multiwalled carbon nanotube (PP/MWCNTs) nanocomposites. Samples were prepared via melt compounding method using a Haake internal mixer at rotor speed of 80 r/min. The torque values in a 10-min co…
Through the heterogeneous nucleation of polymer nodules on a surface-modified silica particle, the high-yield achievement of hybrid colloidal molecules with a well-controlled multipod-like morphology was recently demonstrated. However, as the formation mechanism of these colloidal molecules has not been completely und…
Abstract A water‐soluble and low stimulation sodium bisulfite blocked isophorone diisocyanate (IPDI) has been prepared. The blocking and deblocking of the blocked IPDI is observed by hot‐stage Fourier transform infrared (FTIR) spectrophotometer. The experimental results reveal that IPDI is successfully blocked by sodi…
Plasmon-enhanced fluorescence is attributable to two independent processes: 1) excitation enhancement due to an increased electric field near metallic nanostructures and 2) emission enhancement from a surface plasmon resonance-coupled excited state of fluorophores. Using semiconductor nanocrystals (quantum dots) on di…
When modeling the biased minor loops of the giant magnetostrictive material (GMM) with the classic Jiles-Atherton method, it is hard to describe the characters. When analyzing the shape changing rule of the hysteresis minor loops of Terfenol-D, whose magnetizations are not saturated, the shapes of loops are mainly aff…
The photoluminescence of the negatively charged nitrogen-vacancy (${\mathrm{NV}}^{\ensuremath{-}}$) center displays anomalous saturation behavior at high excitation pulse energies. Where the luminescence is expected to approach a maximum value asymptotically, we have found that it instead drops by as much as a factor…
Abstract The ordering behavior of polymer nanocomposites composed of gold nanoparticles confined in the polystyrene (PS) domains of PS based block copolymers was investigated. The results reveal that the self‐assembly of nanoparticles in the PS domains improved the ordering of microdomains. This is attributed to the p…
The authors have developed several binary, ternary, and quaternary selenide crystals for nonlinear optical (NLO) applications. The authors present an overview of the crystal growth and characterization of bulk and quasi-phase matched (QPM) crystals for their applications in mid-wave infrared (MWIR) and long-wave infra…
Abstract Epitaxial thin films of La 1.875 Sr 0.125 NiO 4 (lanthanum strontium nickelate, LSNO) have been synthesized by sputtering onto single crystal oxide substrates and their structural and dielectric properties are reported. High dielectric constants on the order of 10 7 have been measured up to 1 MHz in interdigi…
We present a coarse-grained model for linear polymers with a tunable number of effective atoms (blobs) per chain interacting by intra- and intermolecular potentials obtained at zero density. We show how this model is able to accurately reproduce the universal properties of the underlying solution of athermal linear ch…
The crystal structure of the coordination polymer diaqua(μ-5,5'-bistetrazolato-κ4N1,N2,N5,N6)copper(II) was determined by X-ray diffraction. The copper atoms are connected to chains over the bridging 5,5'-bistetrazolato ligand. The energetic properties of the compound were investigated, such as thermal behavior and se…
The oxidation of nitric oxide (NO) mediated by substituted nickel phthalocyanines (NiPc(X) n ) has been investigated for 19 complexes at the B3LYP and M05-2X/LANL2DZ/6-31G(d) levels of theory. Unimolecular reactivity descriptors like chemical potential and electrophilicity were calculated for NiPc(X) n, giving an acco…
Abstract A series of mesostructured SO 4 2− /ZrO 2 ‐based hybrid materials functionalized with alkyl‐bridged organosilica species, forming SO 4 2− /ZrO 2 ‐SiO 2 (Ph/Et), were developed by using a single step co‐condensation technique with hydrothermal treatment in the presence of triblock copolymer surfactants. By tun…
Vibrationally-resolved photoelectron spectra of AlMoO(y)(-) (y = 1-4) are presented and analyzed in conjunction with density functional theory computational results. The structures determined for the AlMoO(y) anion and neutral clusters suggest ionic bonding between Al(+) and a MoO(y)(-) or MoO(y)(-2) moiety, and point…
In nanoscale, gold is one of the widely studied metals. It is well-known for its size dependent surface plasmonic absorbance. It has also been reported that clusters of a few atoms of gold can show fluorescence. However, these optical properties of gold are mostly associated with Au(0), and little has been explored fo…