Materials Literature
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Electric-stress hardening of silicon dioxide (SiO2) films under high electric field stresses was studied. SiO2 films were formed by two-step oxidation utilizing thermal oxidation and plasma oxidation. This process has the advantages of both oxidation processes: the low degradation rate of thermal oxidation and the fla…
Abstract The effect of gas flow in low pressure inductively coupled Ar/N2 plasmas operating at the rf frequency of 13.56 MHz and the total gas pressure of 20 mTorr is studied at the gas flows of 5–700 sccm by coupling the plasma simulation with the calculation of flow dynamics. The gas temperature is 300 K and input p…
Shape memory cyanate polymers (SMCPs) are a new kind of smart materials, which have huge development potential and a promising future. A series of shape memory cyanate polymers were prepared by cyanate ester and varying content of a linear modifier. The thermal properties of the SMCPs were investigated by Differential…
Green Chemistry -Environmentally Benign Approaches 34 1.1 Source and properties of engineered nanomaterials
The MCD spectra of meso-triarylsubporphyrins show a sign anomaly which is correlated with the acceptor properties of the aryl substituent. From the spectra, magnetic moments of the excited states are determined. In the context of a simplified orbital model, the sign change is attributed to the quenching of the magneti…
A surface modification technique was proposed for the modification of silicon surface with glucose oxidase (GOD). The silicon surface was first graft copolymerized with acrylic acid (AAc) via surface-initiated reversible addition-fragmentation chain-transfer (RAFT)-mediated process. With the aid of a water-soluble car…
Purpose Corrosion sensors and networks are the most effective techniques to obtain the corrosion information and recognize the corrosion status of reinforced concrete structures. However, reference electrode is the key element to provide the baseline for potential control of the corrosion monitoring sensors during cor…
Damage from corrosion represents one of the most important problems in existing structures. Various types of traditional nondestructive testing (NDT) for example, Ultrasonic ThicknessMeasurement (UTM) or Magnetic Flux Leakage (MFL) are implemented to measure the growth of corrosion; each method, however, has its parti…
In the last years, biosynthesis of nps have been received considerable attention due to the growing need to develop clean, nontoxic chemicals, environmentally benign solvents and renewable materials [Gericke and Pinches, 2006; Harris and Bali, 2008]. As a result, researchers in the field of nanoparticle synthesis and…
The paper addresses the structuring and rheology of semidilute polyelectrolyte solutions with varied concentration and degree of polymer branching. The used polymer is constituted of the units of sodium 2-acrylamido-2-methylpropanesulfonate (NaPAMPS) with the branching inserts of 2-(2-bromopropionyloxy)ethyl acrylate…
In the monomeric title complex, [Cu(C(4)H(5)O(2))(2)(C(8)H(11)N)(2)], the Cu(II) atom lies on a centre of inversion. Its coordination by two substituted pyridine ligands and two carboxyl-ate anions leads to a slightly distorted trans-CuN(2)O(2) square-planar geometry. The dihedral angle between the mean planes of the…
Abstract Charging behaviour of MNOS structures containing Ge nanocrytals embedded at the SiO2/Si3N4 interface are studied by experiments and by calculating tunnelling probabilities of electrons and holes to the conductance or valence band of the nitride layer, respectively, for structures with and without nanocrystals…
A baseline coat-develop track process has been established for inorganic EUV resists. Inorganic EUV resists have already been highlighted for their higher resolution and lower Line-Width-Roughness (LWR) for lithography features as well as strong etch resistance [1], [2], [3], [4]. This inorganic resist system is not o…
Numerous studies on engineering cartilage utilizing chondrocytes from juvenile animal sources have been reported. However, there are many unknown aspects of engineering cartilage using human chondrocytes-especially from middle-aged or elderly adults-which are critical for clinical application of tissue engineering in…
A heparin (Hep)-benzalkonium chloride (C12)-graphite oxide (GO)/polymethylvinyl siloxane (PMVS) nancomposite was prepared via melting intercalation at different temperatures. Scanning electron microscopy images showed the Hep-C12-GO was well dispersed into PMVS processed at 100°C. Mechanical properties measurement dem…
Controlling line width roughness (LWR) is a critical issue in extreme ultraviolet lithography (EUVL). High sensitivity, high resolution, and low LWR are required for EUV lithography resist. However, simultaneously achieving optimal properties through chemical tuning alone is difficult. The track process is one of the…
In the nuclear industry, workers may be exposed to artificial radioactive aerosols. These aerosols are generally composed of particles with a diameter between 0.1$\mu{\hbox {m}}$and 10$\mu{\hbox {m}}$. To protect workers in nuclear facilities, monitors continuously measure radioactivity in the air. The main function o…
Abstract Core‐shell fluoroacrylate copolymer latex was synthesized via semicontinuous seed emulsion polymerization, in which ethyl acrylate was utilized to prepare core, and methyl methacrylate, butyl acrylate, methacrylate acid, and hexafluorobutyl methacrylate were employed to constitute the shell. So the yielded la…
Abstract The effect of de‐tert‐butylation on the coordinating properties of the 24‐membered hexaazadithiophenolate macrocycle 13,27‐bis(tert‐butyl)‐3,6,9,17,20,23‐hexaazatricyclo[23.3.1.11.15]triaconta‐1(28),11,13,15(30),25,26‐hexaene‐29,30‐dithiol (H2L1) has been examined. For this purpose, a series of mixed‐ligand N…
Mitigation of pit-type defects proves to be a major hurdle facing the production of a defect-free mask blank for EUV lithography. Recent efforts have been directed toward substrate smoothing methods during deposition. The angle of incidence of the substrate is known to have a significant effect on the growth of defect…