Materials Literature
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This paper presents the first characterization of anisotropic stress–strain behavior in micron-sized specimens cut directly from hypotubes, the starting material for the manufacture of endovascular stents and other biomedical devices, of a new radiopaque alloy NiTiPt. Experimental results show that NiTiPt hypotube has…
Advanced biophysical imaging techniques, such as cryo-electron microscopy or tomography, enable 3D volumetric reconstructions of large macromolecular complexes in a near-native environment. However, pure volumetric data is insufficient for a detailed understanding of the underlying protein–protein interactions. This o…
The relaxation dynamic of ribose and deoxyribose water solutions at different concentrations has been studied by broadband dielectric spectroscopy and differential scanning calorimetry in the temperature range of 150-250 K. Two relaxation processes are observed for all the hydration levels; the slower (process I) is r…
We employ low-temperature single-molecule spectroscopy combined with pattern recognition techniques for data analysis on a methyl-substituted ladder-type poly(para-phenylene) (MeLPPP) to investigate the electron-phonon coupling to low-energy vibrational modes as well as the origin of the strong spectral diffusion proc…
A PCDD/F(polychlorinated dibenzo-p-dioxin and dibenzofuran)-containing gas stream generating system was developed to investigate the efficiency and effectiveness of V2O5-WO3 catalyst for PCDD/F destruction. Catalytic decomposition of PCDD/Fs (simulated gas streams) was evaluated with lab-scale pelletized and plate-typ…
Unsymmerical calix[4]crowns containing [(O(4)S)(O(5))] (L(1)) and [(O(4)S(2))(O(5))] (L(2)) as crown loops were employed as new scaffolds both for complexation studies and for network formation. Reactions of L(1) and L(2) with KI in the presence of CuI afforded a copper(I) iodide cluster linked 1D-type endocyclic dipo…
A series of poly(Z-lysine)-based block copolymers were synthesized with poly(propylene oxide), poly(ethylene oxide- stat -propylene oxide), and polyhedral oligomeric silsesquioxane. These copolymers form thermoreversible gels in tetrahydrofuran with critical gel concentrations as low as 0.5 wt %. Infrared spectroscopy…
Abstract The framework for designing a slow light waveguide structure which operates in the GHz and up to THz frequencies is outlined. The design for the structure consists of a dielectric core layer cladded with negative permeability metamaterials. The parameter space for the metamaterial has been identified for the…
The reported data for average grain size g and average domain width w are incorrect in the previously published version. They should be multiplied by a factor of 2. The abstract should therefore be corrected to read as: "... at around 480 nm with the decrease in the grain size from 19 to 4.0 μm." The text on page 3, r…
Nucleation and crystallization kinetics of fresnoite (Ba 2 TiSi 2 O 8 ) crystals in BaO–TiO 2 –SiO 2 glasses have been explored for dielectric applications. The volume fractions crystallized at different temperatures and times were tracked by XRD analysis. The activation energy of crystallization was estimated from DT…
Porphyrin arrays with tailor-made photophysical properties and well-defined three-dimensional geometries constitute attractive synthetic targets in porphyrin chemistry. The paper describes a variable, straightforward synthetic procedure for the construction of beta,meso-linked porphyrin multichromophores in good to ex…
Abstract We have investigated the photochemical characteristics of silver 4‐nitrobenzenethiolate (Ag‐4NBT) by means of Raman spectroscopy. When Ag‐4NBT is irradiated with an argon ion laser at 514.5 nm, its Raman spectrum changes over time, resulting in the production of 4NBT‐capped silver nanoparticles. The surface‐e…
Multisegmented nanowires (NWs) based on poly(3,4-ethylenedioxythiophene) (PEDOT) and polypyrrole (PPy) are synthesized by an all-electrochemical template method for precise control over segment dimensions. We study the influence of different parameters on the growing process of the PEDOT segment and on the mechanical…
Molecular transport through thin polymer films has become a subject with a variety of challenges and opportunities for chemists, physicists, and material scientists in recent years. The diffusion of probe molecules in and out of macromolecular environments plays a major role in the response of polymer-based sensor mat…
The heats of formation for BN, HBNH, H 2 BNH 2, and H 3 BNH 3 and their radicals, anions, cations, and protonated species were predicted using the CCSD(T) method with correlation consistent basis sets extrapolated to the complete basis set and core−valence, scalar relativistic, spin−orbit, and zero-point energy correc…
We propose a kind of folded geometry in bipolar coordinates. Transformation optics in such folded geometries has many intriguing applications, such as a kind of conceptual devices that can exactly cancel the scattering of a prespecified external object and thereby make it invisible. Numerical simulations are performed…
Scaffold-guided vascular tissue engineering has been investigated as a means to generate functional and transplantable vascular tissue grafts that increase the efficacy of cell-based therapeutic strategies in regenerative medicine. In this study, we employed confocal microscopy and three-dimensional reconstruction to…
Two donor-acceptor molecules with different pi-electron conjugative units, 1-((10-methyl-10H-phenothiazin-3-yl)ethynyl)anthracene-9,10-dione (AqMp) and 1,1'-(10-methyl-10H-phenothiazine-3,7-diyl)bis(ethyne-2,1-diyl)dianthracene-9,10-dione (Aq2Mp), have been synthesized and investigated for their photochemical and elec…
Fe 3+ ‐ or Nb 5+ ‐doped CaCu 3 Ti 4 O 12 (CCTO) ceramics show higher values of both room‐temperature (RT) grain conductivity and dielectric constant than undoped ceramics. Microstructural and structural characterization combined with magnetic properties reveal the coexistence of two components that seem relevant for t…
Abstract Tip, substrate, molecular species, and laser are the four main factors determining the detection sensitivity and spatial resolution of tip‐enhanced Raman spectroscopy (TERS). In this paper, we deal with the tip and molecular species. We will first introduce a simple method to regenerate Au tips fabricated by…