Materials Literature
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Potassium ferricyanide (PF), routinely employed for the oxidation of sterically-hindered hydroxylamines to nitroxides, is considered to be chemically inert towards the latter. In the present study, we report on an unexpected oxidative fragmentation of the imidazolidine nitroxides containing hydrogen atom in the 4-posi…
We demonstrated the fabrication and application of well-ordered and vertically aligned dipeptide nanostructures based on a simple gas phase deposition. Deposited nanostructures exhibited the superhydrophobic property with a very low sliding angle. Highly reproducible SERS data have also been obtained after combining d…
Commercial HZSM-5 was modified by treating with phosphoric acid and boric acid for the selective methylation of benzene. The study of the performance with respect to the selectivity of the major products, toluene and xylene is the interest of the work. Catalysts were characterized based on BET surface area and XRD, SE…
Conducting atomic force microscopy and scanning surface potential microscopy were used to study the surface electrical properties of gallium-doped zinc oxide (GZO) films on the nanoscale. GZO films on a polyimide (PI) substrate were prepared by pulsed laser deposition at various substrate temperatures. Our experimenta…
This paper presents a method for measuring the complex permittivity of a dielectric material on a dielectric/metal stack without etching the dielectric layer. A series of circular capacitor test structures were designed and fabricated. For the first time, the unwanted capacitanceCp, which is formed by the oxide layer…
Abstract Hydrolyzed polymers of soybean oil (HPSO) and of epoxidized soybean oil (HPESO) were developed previously. Owing to their natural food origin and biocompatibility, we exploited further their potential as a drug delivery system and pharmaceutical excipients. This work aimed to investigate self‐assembly, therma…
We propose an all-laser processing approach allowing controlled growth of organic-inorganic superlattice structures of rare-earth ion doped tellurium-oxide-based glass and optically transparent polydimethyl siloxane (PDMS) polymer; the purpose of which is to illustrate the structural and thermal compatibility of chemi…
We simulated heat propagation in the integrated graphene heat spreaders within the interconnect hierarchy. In the considered design, the graphene layers perform the dual functions of interconnects and heat spreaders. We investigated Joule heating effects within the chip with graphene interconnect networks and heat spr…
Abstract A novel physical blend method was developed to accelerate the self‐assembly process of silk fibroin (SF) solution into porous and nanofibrous hydrogel by temperature‐sensitive copolymer. Silk‐based hydrogel was firstly achieved through blending SF solution with copolymer aqueous solution and then removed the…
Abstract: This paper concerns the problem of creeping flow of an incompressible micropolar fluid past a fluid sphere with non-homogeneous boundary condition for micro rotation vector i.e. the micro rotation on the boundary of the fluid sphere is assumed to be proportional to the rotation rate of the velocity field on…
We demonstrate single-nanowire plasmonic gratings made by focused-ion-beam milling of single Au nanowires. At the optical communication band, a 290 nm diameter Au nanowire with grating length of 15.6 µm offers evident grating features with a transmission dip up to ∼3.3 dB. The grating effects in typical Au nanowires w…
Abstract The modifications in microstructural, optical, and photoluminescence properties of the Lexan polycarbonate (bisphenol‐A‐polycarbonate) films exposed to different electron doses have been studied using UV–vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), positron annihilation lifetime spectrosc…
Efficient deep blue-emitting poly[9,9-bis(2-ethylhexyl)fluorene] derivatives were synthesized via incorporating 2,8-diyl-dibenzothiophene-S,S-dioxide (FSO) moiety into polyfluorene backbone. The photoluminescence (PL) spectra exhibit excellent thermal stability and PL quantum efficiencies distinctly improved upon ther…
We have systematically studied the electron pair emission from a Cu(100) surface over a wide range of primary electron energies. We are able to identify contributions from valence states of different orbital characters. The relative intensity from states near the Fermi level (${E}_{F}$) and from the $3d$ levels is str…
Several pigments and vat dyes were used for investigating changes in the reflective behavior of printed brown and khaki cotton/polyester (65/35) fabrics in Vis/near IR (NIR) bands. Reflectance, light, rubbing, washing fastness, and colorimetric values of treated samples with TiO2 nanoparticles and carbon black powder…
The TiNiSi-type structure, antiferromagnetic ordering and divalent state of europium in EuPdSn have been confirmed by neutron powder diffraction. The Néel temperature is 16.2(3) K. The magnetic diffraction peaks can be indexed with a propagation vector k = [0, 0.217, q(z)] (q(z) ≤ 0.02) at 13.2 K, and k = [0, 0.276, 0…
Abstract Konjac glucomannan (KGM)‐polyvinyl alcohol (PVA) composite membranes were investigated with the aim of proposing an improved caprolactam pervaporation dehydration process. The composite membranes were characterized by FTIR, SEM, XRD and degree of swelling measurements. The effect of the proportion of KGM in t…
PURPOSE: Studying the effect of surface roughness and thermal cycling on titanium-ceramic bonding. METHODS: One hundred fourteen samples in the form of bar for the C.P. titanium and Ti-6Al-4V alloy were used. They were divided into two groups according to the type of bar. Each group was then subdivided according to th…
Abstract A design for ultrathin absorbers with wideband absorption is presented. The absorber is composed of a high-impedance surface comprising a lossy patch array over an electrically thin grounded dielectric substrate. This class of absorbers is usually considered as a narrowband structure. Here, we show that the p…
Abstract In order to improve the method of synthesis of poly(ethylene terephthalate) (PET), a series of ionic liquids (ILs) based on benzyl imidazolium ([YBMIM][X], Y = NO2, CH3, F; B = benzyl; X = Tf2N) were used to investigate the formation of PET at low temperature and pressure. High molecular weight PET (Mw up to…