Materials Literature
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Abstract Natural fiber‐reinforced composites are more and more frequently applied to building industry and transportation. Therefore, the knowledge of their behavior during fire is of high importance. Flammability is one of very important parameters that often limits the application of composites to a given area. It i…
The electromagnetic (EM) characteristics of ZnO-coated Fe nanocapsules synthesized by arc discharging were studied at 2–18GHz. A reflection loss (RL) exceeding −20dB was obtained in the frequency range of 6.1–15.7GHz for an absorber thickness of 1.5–5mm. An optimal RL of −57.1dB was found at 7.8GHz for an absorber thi…
North Carolina State University Theses Textile Engineering, Chemistry and Science.
North Carolina State University Theses Nuclear Engineering.
It is known for quite some time that approximate density functional (ADF) theories fail disastrously when describing the dis-sociative symmetric radical cations R2+. Considering this dissociation limit, previous work has shown that Hartree-Fock (HF) theory favors the R+1--R0 charge distribution while DF approximations…
Oriented attachment is a new way of crystal growth to transform preformed nanoparticles into hierarchical assemblies. Here, we demonstrate the use of liquid−liquid interfaces toward the formation of PbCrO 4 nanoparticles and their subsequent time-dependent self-assembly at the air−water interface into nanorods by orie…
The reaction of the tris-indole InTREN ligand (L) with different gold phosphine fragments allows the construction of new gold(I) complexes with different geometries depending on the chosen phosphine. A metallodendrimeric structure is obtained when the gold atom is linked to a triphenylphosphine ligand, and neutral gol…
Abstract We tried to prepare silicon carbide-based nanoporous materials using the replica method. The polycarbosilane (PCS) as the SiC precursor filled the mesopores of mesoporous silica as the template, and then calcination and subsequent removal of the silica matrix led to the mesoporous product with a BET specific…
In a blend, the interfacial interaction between the component phases can be effectively utilized to bring about homogeneous mixing and unique performances. While in conventional blends, preserving the morphology of the melt mixed state is unfeasible because of the strong thermodynamic tendency of the components to pha…
Abstract A chiral octadecavanadate has been isolated and optically resolved into enantiomers by spontaneous resolution. From the partial oxidation reaction of a reduced decavanadate [V10O26]4− with nitric acid, a chiral octadecavanadate encapsulating a nitrate template was formed. A nitrate anion was incorporated at t…
The complex of barnase (bn) and barstar (bs), which has been widely studied as a model for quantitative analysis of protein-protein interactions, is significantly destabilized by a single mutation, namely, bs Asp39 --> Ala, which corresponds to a change of 7.7 kcal x mol(-1) in the free energy of binding. However, the…
Surface-enhanced Raman scattering (SERS) was applied to investigate the fine nanostructure of single-wall carbon nanohorns (SWCNHs) and partially oxidized SWCNHs of which Raman D bands are predominant. SERS of SWCNH samples was measured in vacuo by deposition of SWCNH particles on silver foil with evaporation of SWCNH…
The effect of some low molecular weight straight-chain diamines to inhibit the corrosion of SS type 304 in 1 M HCl solution is examined by weight loss and galvanostatic polarization techniques. The inhibition efficiency increases with increasing the number of carbon atoms in the chain up to 8 carbons, but at higher th…
The process of self-assembly of the triple-helical peptide (Pro-Hyp-Gly)(10) into higher order structure resembles the nucleation-growth mechanism of collagen fibril formation in many features, but the irregular morphology of the self-assembled peptide contrasts with the ordered fibers and networks formed by collagen…
The self-assembly behavior of polyoxometalate (POM) macroanion-capped 3-nm-radius Pd (0) nanoparticles in aqueous solution is reported. Pd(0) nanoparticles are synthesized from reducing K(2)PdCl(4) by using Dawson-type V-substituted POM K(9)[H(4)PV (IV)W(17)O(62)] (HPV(IV)) clusters as the reductant and stabilizer sim…
The solubilities of ofloxacin, norfloxacin, lomefloxacin, ciprofloxacin, pefloxacin, and pipemidic acid in water have been determined experimentally from (293.15 to 323.15) K. The experimental data were correlated with the modified Apelblat equation. The calculated results show good agreement with the experimental dat…
Poly(aniline- co-2-amino-4-hydroxybenzenesulfonic acid) (PAAHB) was first synthesized via the electrochemical copolymerization of aniline and 2-amino-4-hydroxybenzenesulfonic acid (AHB) in the presence of an ionic liquid. The conductivity of PAAHB in the oxidized state is 0.45 S cm(-1). The conductivity and ESR spectr…
describe a one-step UV-replica molding method for fabricating a biomimetic dual-scale hierarchical structure. The use of UV-curable, acrylate-functionalized perfluoropolyethers allows for a high fidelity replication of a low-energy surface with multiscale texture, thereby directly creating a superhydrophobic surface w…
We present an efficient method for direct determination of the excess free energy ΔF of a nanoparticle inserted into a polymer brush. In contrast to Widom's insertion method, the present approach can be efficiently implemented by Monte Carlo or Molecular Dynamics methods also in a dense environment. In the present inv…
A combined approach of pH-dependent in-situ AFM topography and ex-situ LEED studies of the stability and dissolution of single-crystalline ZnO(0001)-Zn surfaces in aqueous media is presented. Hydroxide-stabilized and single-crystalline ZnO(0001)-Zn surfaces turned out to be stable within a wide pH range between 11 and…