Materials Literature
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In this article we elucidate the origins of interaction-induced linear and nonlinear electro-optic properties of model hydrogen-bonded π-electronic complexes. In particular we report on contributions due to various interaction energy terms to excess dipole moments (Δμ), electric dipole polarizabilities (Δα), and first…
Terahertz and infrared spectra of the optical response of DyScO3 single crystal are measured at temperatures from 5 K to 300 K for two different polarizations E‖[1¯01] and E‖[010], i.e., along the two crystallographic directions of the DyScO3 substrates used for growing of thin films and heterostructures. Detailed ref…
Effect of electron beam irradiation on the mechanical and physicochemical properties of both styrene butadiene rubber (SBR)/clay and ethylene propylene diene monomer (EPDM)/clay nanocomposites containing clay contents from 3 to 10 phr prepared by melt blending method has been investigated. The prepared composites were…
The structural evolution in poly(styrene-b-butadiene) (P(S-b-B)) diblock copolymer thin films during solvent vapor treatment is investigated in situ using time-resolved grazing-incidence small-angle X-ray scattering (GISAXS). Using incident angles above and below the polymer critical angle, structural changes near the…
The crystal structure of a γ-Ga 2 O 3 layer grown epitaxially on an MgO substrate by a vapor phase transport method was investigated by transmission electron microscopy, electron diffraction, and scanning transmission electron microscopy with aberration correctors. Some forbidden reflections were excited in electron d…
A multilayer of quantum dots (QDs) is preferred for QD-sensitized solar cells over a monolayer counterpart to fully utilize the sunlight incident into a relatively thin-film-based photovoltaic device. A controlled assembly of QD multilayers such as layer-by-layer (LbL) assemblies can provide a model system to study th…
Detailed examination of the nanostructured bulk Si0.80Ge0.20 alloy synthesized by mechanical alloying and hot-press methods revealed that the alloy composition can unintentionally deviate from its nominal value. The phase deviation is difficult to be detected with x-ray diffraction due to the continuous solid solution…
The plasmon resonance and electric field enhancement in a side-by-side tangent nanospheroid homodimer (TNSHD) have been investigated theoretically by using DDA and FDTD methods, respectively. The simulation results indicate that this side-by-side TNSHD has its novel optical properties. We find that the plasmon resonan…
Self-assembled peptide nanostructures with actively folded secondary structures have potential to mimic the function of proteins. We here show that α-helix-stabilized self-assembled peptide nanostructures (αSSPNs), whose sizes are comparable to those of proteins, have potential to be developed as protein-protein inter…
Noble metals such as Pt are a perfect substrate for the catalytic growth of monolayer graphene. However, the requirements of the subsequent transfer process are not compatible with the traditional etching method. In this work, we find that the interaction of graphene with Pt foil can be weakened through the intercalat…
We present here the development of adaptable hybrid materials in which self-assembling peptides can sense the diameter/curvature of carbon nanotubes and then adjust their overall structures from disordered states to α-helices, and vice versa. The peptides within the hybrid materials show exceptionally high thermal-ind…
In recent years, core–shell multi-components have attracted intense attention because of their potential applications in catalysis [ 1 ]. Unlike single-components that can supply only one function, core–shell multi-components can integrate multiple functions into one system for specific applications [ 2 – 6 ]. Moreove…
A heterostructure based on gold nanoparticles (Au NPs ) and NiAl layered double hydroxide (LDH) was prepared by one-step electrosynthesis, directly onto the electrode surface. The resulting material (Au NPs –NiAl LDH) was characterized by SEM, TEM, UV–vis, XRD, EXAFS, and XANES spectroscopy and by electrochemical tech…
A series of novel organic–inorganic complexes based on trivalent lanthanide and HOOC–C 6 H 4 –CH 2 PO(OH)(OC 2 H 5 ) (H 2 L′) formulated as Ln(HL)(H 2 L)(H 2 O) (H 3 L = HOOC–C 6 H 4 –CH 2 PO(OH) 2, Ln = La, 1; Ce, 2; Pr, 3; Nd, 4; Sm, 5; Eu, 6; Gd, 7; and Tb, 8 ) have been obtained as single phases by regulating the…
ABSTRACT The electropolymerization of thionine in an aqueous solution has been carried out by using both cycling voltammetry and chronoamperometry experiments. Electropolymerization has been applied at various pHs by using different working electrodes. The characterization of poly(thionine) thin films is performed by…
A combination of electron microscopy and in-situ x-ray diffraction is employed to study the thermal oxidation of brass (Cu0.7Zn0.3 alloy) in order to elucidate the mechanism of one-dimensional growth of ZnO nanostructures. Oxidation of the brass alloy results in the growth of a ZnO overlayer with ZnO nanowire formatio…
To understand the origin of the nodal gap structure realized in BaFe${}_{2}$(As,P)${}_{2}$, we study the three-dimensional gap structure based on the three-dimensional ten-orbital Hubbard model with quadrupole interaction. In this model, strong spin and orbital fluctuations develop when the random-phase approximation…
We report the fabrication of large area, thin asymmetric free-standing two-dimensional (2-D) photonic crystals. We fabricate large area 2-D close-packed monodisperse polystyrene (PS) particle monolayers at air/water interfaces by using our needle tip flow method. We then layer tetraethyl orthosilicate (TEOS) onto the…
Natural biopolymer used for hydrogels has attracted increasing attention in the multifaceted areas of biomedical science and engineering. The authors prepared chitosan biopolymer Schiff base by solvent exchange method using a simple aliphatic crosslinker, crotanaldehyde. The identity of Schiff base was confirmed by UV…
The effect of milling on the transitions of sulfathiazole polymorphs in the absence and presence of solvent and excipients was monitored by X-ray powder diffraction (XRPD), attenuated total reflectance infrared (ATR-IR), and near-infrared (NIR) spectroscopy. Sulfathiazole forms FII–FV undergo a transformation toward t…